CN202205777U - Building-material-type double-faced glass photovoltaic component - Google Patents

Abstract

The utility model discloses a building-material-type double-faced glass photovoltaic component, which comprises a solar battery core board, an upper protection layer and a lower protection layer, wherein the upper protection layer and the lower protection layer are arranged at two sides of the solar battery core board; the upper protection layer and the lower protection layer are curved glass with identical flexion, the solar battery core board is made of a flexible material, and the flexion of the solar battery core board is identical to that of the upper and the lower protection layers. The solar battery core board can be integrated with the upper and the lower protection layers into a whole to form the building-material-type double-faced glass photovoltaic component which has high photoelectric conversion efficiency, stable performance and a long service life, is safe and reliable, and not only can insulate the heat, preserve the heat, insulate the sound, prevent the ultraviolet and prevent the falling, but also can select the transmissible. Not only can certain lighting requirements be satisfied, but also lighting for power generation on two surfaces can be realized. At the same time, the appearance radian is attractive, so the integration of the solar and the building can be convenient to realize. The building-material-type double-faced glass photovoltaic component is particularly suitable for different buildings such as complicated curved and plane photovoltaic curtain walls, photovoltaic glass lighting roof, photovoltaic parking shed, photovoltaic waiting pavilion and the like.

Description

A kind of building materials type double-sided glass photovoltaic component

Technical field

The utility model relates to a kind of photovoltaic component of building materials type, particularly a kind of select light-transmission type, photoelectric conversion efficiency height, stable performance, life-span long, safe and reliable, adopt flexible thin-film solar cell central layer and novel encapsulated technology, good looking appearance, conveniently realize solar energy and architecture-integral (BIPV), be particularly suitable for complex-curved photovoltaic glass curtain wall, photovoltaic glass daylighting top and photovoltaic carport, photovoltaic waiting booth etc. build use, based on the building materials type double-sided glass photovoltaic component of organic or inorganic base material.

Background technology

Solar photovoltaic technology develops into today, and the application of photovoltaic generation is more and more wider, and the application of solar energy and architecture-integral design (BIPV) is more and more universal, and becomes main flow trend gradually.Combine with west, the southeast vertical plane wall of roof or building like solar energy power generating, both reduced building energy consumption, saved the installing space and the building decoration expense of solar components again, and for example solar energy waiting booth, newsstand, awning etc.

All be common crystal silicon solar battery component (comprising monocrystalline silicon and polysilicon solar cell), Thinfilm solar cell assembly (thin-film solar cells that comprises amorphous silicon, polysilicon, microcrystal silicon, cadmium sulfide, cadmium telluride, GaAs, CIS, CIGS, zinc phosphide or other multi-element compounds) with what build use in the past; And have following shortcoming: 1, conventional solar module safety of structure is not high; Can not be directly as building element, only be to combine installing with building; 2, conventional solar module all adopts lighttight TPT (polyvinyl fluoride composite membrane) to do the backboard protective material, and light transmission is very poor.Fig. 1 is common crystal silicon solar battery component and structural representation, and Fig. 2 is common amorphous silicon or other Thinfilm solar cell assemblies and structural representation.

The development and the market demand along with solar-photovoltaic technology; The double-glass solar battery component occurs and (claimed two glass photovoltaic components again; Main as building curtain wall); Be ultrawhite toughened glass+PVB/EVA glue+solar cell lamella+PVB/EVA glue+toughened glass, form through laminating machine or the compacting of roll squeezer hot melt again that described solar cell lamella is generally crystal silicon solar cell sheet, amorphous silicon solar cell module or other Thinfilm solar cell assemblies.

As shown in Figure 3, be conventional crystalline silicon double-glass solar battery component and structural representation.There is following defective in conventional crystalline silicon double-glass solar battery component: 1, solar module all is plate, and style is single; 2, crystal silicon solar cell sheet is broken easily, is difficult to make the photovoltaic module of radian (or radian is big slightly); 3, be not suitable for the curved surface installation, require the mode that the radian design is as far as possible little and adopt the polylith flat board to splice when meeting curved surface, increase installation difficulty and cost, and influence overall appearance; 4, it often adopts thicker toughened glass to encapsulate in order to protect breakable crystal silicon chip, and the assembly mass area ratio is excessive, and the requirement of strength to supporting construction is higher simultaneously, increases system cost; 5, through the spacing between adjustment crystal silicon cell sheet, and reserve big printing opacity space and satisfy the daylighting requirement of building, reduced the energy output of unit are.

Because toughened glass causes the glass surface out-of-flatness because of internal stress; And can influence the membrane uniformity and the quality of its surface coating; So amorphous silicon or other Thinfilm solar cell assemblies adopt: non-tempering ultra-clear glasses substrate+thin film solar pond lamella (repeatedly plated film and laser scribing)+PVB/EVA+TPT/ glass forms through laminating machine or the compacting of roll squeezer hot melt again.So amorphous silicon or other film double-glass solar battery components generally are on the front or the back side of amorphous silicon or other Thinfilm solar cell assemblies; The toughened glass that is stained with protective effect with the EVA/PVB glued membrane again forms, and its profile and structural representation are shown in Fig. 4 and Fig. 4 A.There is following defective in conventional film double-glass solar battery component: 1, the system film mode of conventional thin-film solar cells can not realize even plated film on the basal plane of bending, makes amorphous silicon or other film double-sided glass solar modules can not directly make flexure type; 2, be not suitable for the curved surface installation, require the mode that the radian design is as far as possible little and adopt the polylith flat board to splice when meeting curved surface, increase installation difficulty and cost, and influence overall appearance; 3, amorphous silicon or other thin-film solar cells all adopt lighttight AL film as back electrode, only have the laser grooving and scribing gap of solar battery cell can pass through micro-light, and whole assembly light transmission is very poor; 4, for satisfying the daylighting requirement of building; General laser intersection delineation electrode A L (aluminium) film and the thin film solar cell sheet layer of adopting; Obtain a lot of small battery unit and printing opacity gaps; So not only increase the cost of laser grooving and scribing operation, also wasted a lot of effectively solar-electricity pool areas.

Simultaneously; Thin-film solar cells generally all adopt binode (PN+PN or PIN+PIN structure, P represents the P-type conduction layer, I represents intrinsic layer; N represents N type conductive layer) or the laminated construction form of tying more; Utilize band gap (difference of electronic potential between material valence band and the conduction band) sizes of different knot layers (PN junction or PIN knot), absorb the photon of respective wavelength and produce photoelectric current, thereby the absorption bands of the thin-film solar cells of extending, improved photoelectric conversion efficiency.Many knots laminated construction of amorphous silicon or other thin-film solar cells is as shown in Figure 5, and its equivalent circuit diagram is shown in Fig. 5 A, and the solar cell of knot layer is connected successively up and down.Be prone to knowledge by circuit knowledge, tie a layer voltage sum though the output voltage of thin-film solar cells is each, its output current equals each and ties that minimum when layer is independent to be exported electric current.Simultaneously, the output voltage of solar cell is directly related with the band gap of material itself, and is less with the variation fluctuation of solar energy light intensity, and the photoelectric current of solar cell is then very big with the fluctuation of sun intensity variations.So thin-film solar cells receives the influence of the mutual cascaded structure of internal junction layer, lost more photoelectric current to a certain extent, thereby reduced the photoelectric conversion efficiency of self.

The building glass curtain wall is tending towards monolithic large scale or arc design on attractive in appearance, so conventional solar module all can not satisfy instructions for use.

The utility model content

In order to overcome above defective; The utility model aims to provide a kind of building materials type double-sided glass photovoltaic component, it be a kind of select light-transmission type, photoelectric conversion efficiency height, stable performance, life-span long, safe and reliable, adopt flexible thin-film solar cell central layer and novel encapsulated technology, good looking appearance, conveniently realize solar energy and architecture-integral (BIPV), be particularly suitable for all kinds of buildings uses such as arc photovoltaic curtain wall, photovoltaic daylighting top and photovoltaic carport, photovoltaic waiting booth etc., based on the photovoltaic component of organic or inorganic base material.

For realizing above-mentioned purpose, the utility model adopts following technical scheme:

A kind of building materials type double-sided glass photovoltaic component comprises solar battery core board and is located at the last protective layer and the lower protective layer of solar battery core board both sides; It is characterized in that described upward protective layer is the identical bend glass of bending curvature with lower protective layer, said solar battery core board is a flexible material, and its bending curvature also bending curvature with last protective layer, lower protective layer is identical.

Its further technical scheme is: be respectively equipped with glued membrane, following glued membrane between described solar battery core board and last protective layer, the lower protective layer; The solar cell rete that described solar battery core board comprises flexible substrate and connects with flexible substrate.

Its further technical scheme is: described flexible substrate is metal forming or nonmetal flexible substrate; Described solar cell rete is the thin-film solar cells layer; Described upward glued membrane, following glued membrane are PVB film or EVA film.

Its further technical scheme is: described flexible substrate is provided with several through-hole structures, and described through-hole structure is circular hole, elliptical aperture, square hole, delthyrium, diamond hole or star-shaped aperture etc.; Describedly go up the bend glass that protective layer, lower protective layer are forms such as single curved, bending, compound curved, many curvatures, spherical crown surface or warp surface.

Its further technical scheme is: the described protective layer of going up is low iron ultrawhite toughened glass; Described lower protective layer is common toughened glass, flame resistant glass or half tempered glass.

Its further technical scheme is: described solar cell rete comprises upper conductive film, lower conductive film; And the P-I-N that is located between upper conductive film and the lower conductive film ties layer; Described upper conductive film is a transparency conducting film; Described lower conductive film is transparency conducting film or AL (aluminium) film, and described P-I-N knot layer is one deck or more than two layers.

Its further technical scheme is: the solar cell rete on the said solar battery core board is divided into several battery sheets; The lower conductive film of each battery sheet is provided with the built-in end between the P-I-N layer that places flexible substrate and adjacent cell sheet; Said P-I-N knot layer is provided with the conduction perforation of the lower conductive film built-in end that is used to connect upper conductive film and adjacent cell sheet, and being provided with upper conductive film in described conduction is bored a hole is the electric conductor of one.

Its further technical scheme is: the solar cell rete on the said solar battery core board is divided into several battery sheets; Be the tandem compound structure of single P-N ties or the cascaded structure of a plurality of P-N knot, single P-I-N knot or a plurality of P-I-N tie tandem compound structure, P-N knot and P-I-N knot, or be the parallel connection mode of aforementioned structure.

The utility model beneficial effect compared with prior art is: the solar battery core board that the utility model utilizes sub-inside battery solar cell knot layer to adopt the flexible thin-film solar cell of parallel way to make; Can constitute an integral body with upper and lower protective layer (bend glass); Formation has photoelectric conversion efficiency height, stable performance, life-span length, safe and reliable; Both heat insulation, insulation, sound insulation, antiultraviolet, the breakage-proof building materials type double-sided glass photovoltaic component that falls, can select printing opacity; Both can satisfy certain daylighting demand, and can two-sided daylighting generate electricity again, the appearance radian is elegant in appearance simultaneously; Convenient solar energy and the architecture-integral (BIPV) realized, all kinds of buildings such as photovoltaic glass curtain wall, photovoltaic glass daylighting top and photovoltaic carport, photovoltaic waiting booth etc. that are particularly suitable for complex-curved and plane are used.

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

Description of drawings

Fig. 1 is common crystal silicon solar battery component floor map;

Figure 1A is the generalized section of Fig. 1;

Fig. 2 is common amorphous silicon or other Thinfilm solar cell assembly floor map;

Fig. 2 A is the generalized section of Fig. 2;

Fig. 3 is conventional crystalline silicon double-glass solar battery component floor map;

Fig. 3 A is the generalized section of Fig. 3;

Fig. 4 is conventional amorphous silicon or other film double-glass solar battery component floor map;

Fig. 4 A is the generalized section of Fig. 4;

Fig. 5 is conventional double junction non-crystal silicon or other film solar battery structure sketch mapes;

Fig. 5 A is conventional many junction amorphous silicons or other film solar battery structure sketch mapes;

Fig. 5 B is conventional many junction amorphous silicons or other thin-film solar cells schematic equivalent circuits;

Fig. 6 A is the two glass photovoltaic component sketch mapes of the single flexure plane formula of the utility model building materials type;

Fig. 6 B is the two glass photovoltaic component sketch mapes of the utility model bending curved face type building materials type;

Fig. 6 C is the two glass photovoltaic component sketch mapes of the utility model complex bend face formula building materials type;

Fig. 6 D is the two glass photovoltaic component sketch mapes of many curvatures of the utility model spherical cap type curved face type building materials type;

Fig. 6 E is the two glass photovoltaic component sketch mapes of many curvatures of the utility model distortion formula curved face type building materials type;

Fig. 6 F is the two glass photovoltaic component sketch mapes one of the utility model metal foil substrate solar cell building materials type;

Fig. 6 G is the two glass photovoltaic component sketch mapes two of the utility model metal foil substrate solar cell building materials type;

Fig. 7 is the two glass photovoltaic component detailed structure sketch mapes of the utility model building materials type;

Fig. 8 A is two glass photovoltaic component solar battery core board detailed structure one sketch mapes of the utility model building materials type;

Fig. 8 B is two glass photovoltaic component solar battery core board detailed structure two sketch mapes of the utility model building materials type;

Fig. 9 A to Fig. 9 C is the solar cell layer structural representation of the used solar battery core board of the utility model;

The solar cell layer that Figure 10 A to Figure 10 C is respectively the utility model is the solar battery core board electrical block diagram of unijunction, double-click, three knots.

Accompanying drawing sign (part)

A thermotropism fusion pressure system direction S1 crystal silicon solar cell sheet

S2 toughened glass S3 contact conductor

S4 aluminum alloy frame S5 EVA/PVB glued membrane

S6 TPT diaphragm

T1 thin-film solar cells film T2 glass

T3 aluminum alloy frame T4 AL conductive electrode

T5 transparent conductive electrode T6 EVA/PVB glued membrane

T7 TPT diaphragm T8 thin film solar cell sheet layer

R1 crystal silicon solar cell sheet R2 toughened glass

R3 contact conductor R4 EVA/PVB glued membrane

A1 a-si solar cell film A2 glass

A3 AL conductive electrode A4 transparent conductive electrode

A5 thin film solar cell sheet layer A6 EVA/PVB glued membrane

A7 toughened glass

The anodal C2 negative pole of C1

C3 glass substrate C4 glass substrate

C5 battery C6 utmost point conducting film

The sub-battery of C7 negative pole conducting film D

Embodiment

In order more to make much of the technology contents of the utility model, below in conjunction with specific embodiment the technical scheme of the utility model is further introduced and explanation, but be not limited to this.

Shown in Fig. 6 A, Fig. 6 B, Fig. 6 C, Fig. 6 D, Fig. 6 E, be respectively single flexure plane formula, bending curved face type, complex bend face formula, many curvatures of spherical cap type curved face type of the two glass photovoltaic components of the utility model building materials type, the structural representation of many curvatures of distortion formula curved face type; Fig. 6 F is the two glass photovoltaic component sketch mapes one of the utility model metal foil substrate solar cell building materials type, and Fig. 6 G is the two glass photovoltaic component sketch mapes two of the utility model metal foil substrate solar cell building materials type.

As shown in Figure 7, be the detailed structure sketch map of the two glass photovoltaic components of the utility model building materials type.

Like Fig. 6 A, Fig. 6 B, Fig. 6 C, Fig. 6 D, Fig. 6 E, shown in Figure 7, comprise the two glass photovoltaic components 1 of building materials type, flexible thin-film solar cell central layer 2, printing opacity gap 3, go up packaging protection glass 4, EVA/PVB glued membrane 5, following EVA/PVB glued membrane 6, following packaging protection glass 7.The two glass photovoltaic components 1 of building materials type are the integral body that is made up of flexible thin-film solar cell central layer 2, printing opacity gap 3, last packaging protection glass 4, EVA/PVB glued membrane 5, following EVA/PVB glued membrane 6, following packaging protection glass 7.

Last packaging protection glass 4 is crooked; Main daylighting and the protection dual-use function of rising; Adopt the low iron ultra-clear glasses on plane (softening as utilizing glass heats through curved mould (a kind of specialty is carried out the moulds of using of glass bending more) or special dies; And make it because of action of gravity crooked with die surface) be made into the bending-type that needs; Carry out tempering again and form, can make single curved, bending, compound curved, many curvatures various forms of curved face type glass 4 such as (like forms such as spherical crown surface, warp surfaces) through different dies; It also is crooked adorning cover glass 7 down; And bend mode and production method glass are identical with last packaging protection glass 4, and main supporting and the protection dual-use function of rising can be made into common toughened glass, half tempered glass, flame resistant glass; Reach both safety, economical and practical again purpose.

Printing opacity gap 3 is to be used for satisfying the two certain daylighting requirements of glass photovoltaic component of the utility model building materials type; That produce when being the thin-film solar cells of laser grooving and scribing transparent substrates or reserve when adopting the thin-film solar cells of the little metal foil substrate of polylith to arrange, again or the punching of block of metal paper tinsel substrate film solar cell form.Because metal forming is generally light tight; So when needs satisfy the printing opacity requirement; Can with the fritter of the metal foil substrate thin-film solar cells unit of being made into, by the pitch arrangement of necessarily arranging, and the mutual connection in series-parallel of corresponding output electrode that will draw separately come the manufacturing solar cells central layer well; Or the metal foil substrate thin-film solar cells that monoblock is big by certain requirement towards through hole (can not damage battery performance), the shape of punching can be square, circular, oval, rectangle, rhombus, triangle, star etc.Generated electricity the building materials type double-sided glass photovoltaic component of light-permeable, and good looking appearance again thereby both produce.

Last EVA/PVB glued membrane 5 can be selected EVA glued membrane or PVB glued membrane with following EVA/PVB glued membrane 6.EVA (being the abbreviation of Ethylene ethene Vinyl vinyl Acetate acetate) is the sticking compound cutan of a kind of thermosetting; It has many-sided superiority such as low melting point, adhesion strength are strong, good endurance, light transmittance height, and the transparent EVA film thick like 0.38mm satisfies: performance index are following: 1) tensile strength>=17MPa; 2) transmission of visible light>=87%; 3) elongation at break>=650%; 4) mist degree 0.6%; 5) adhesive strength>=2kg/cm ²6) water absorption rate≤0.15%; 7) the ultraviolet cutoff rate 98.5%; 8) radioresistance, thermal endurance, moisture-proof, impact resistance, canister shot bag impact property are all qualified.PVB (is PolyVinyl Butyral Film; Be polyvinyl butyral film) be a kind of thermoplastic resin film; Be to add plasticizer production by the PVB resin to form; Have recyclable utilization processing, reusable characteristics, its fail safe, weatherability, thermal endurance, bonding force etc. all are superior to the EVA glued membrane.

The flexible substrate (like polyimides) that adopts light-permeable is during as the substrate of the two glass photovoltaic component solar battery core boards of the utility model building materials type; Because of each layer conducting film also all is printing opacity, so the two glass photovoltaic components of the utility model building materials type can two-sided daylighting generating.While also possesses certain light transmission because of solar cell knot layer, so but the both daylighting generatings of the two glass photovoltaic components of the utility model building materials type can be satisfied certain lighting demand through the light of proper proportion again.

Fig. 8 A is two glass photovoltaic component solar battery core board detailed structure one sketch mapes of the utility model building materials type.

Shown in Fig. 8 A, flexible thin-film solar cell central layer 2 specifically comprises flexible substrate 8, first conducting film 9, first solar cell layer 10, second conducting film 11, insulating barrier 12, the 3rd conducting film 13, second solar cell layer 14, the 4th conducting film 15.Flexible substrate 8 can adopt machinery, mechanics, surface property to reach high temperature resistant, corrosion resistant inorganic material (like stainless steel foil, titanium foil etc.) or organic material (like the polyarylsulfone (PAS) of the polyimide of light-permeable, light-permeable, polyetherimides, polybenzimidazoles class, polysiloxane-based, polyphenylene sulfide, PEO class, polyetheretherketone or other high molecular polymers, or the combination of above-mentioned material) well; When flexible substrate 8 adopts metal forming, should lay a layer insulating at least between the substrate 8 and first conducting film; First conducting film 9, second conducting film 11, the 3rd conducting film 13, the 4th conducting film 15 all are that light transmission is good, resistivity is low, the conducting film of good mechanical property; Can adopt one of oxide and composite multi-component oxide thereof or the combination of In (indium), Sn (tin), Zn (zinc) and Cd (cadmium), also can select to mix AL (aluminium) In (indium), Sn (tin), Zn (zinc) and Cd (cadmium) one of oxide and composite multi-component oxide thereof or make up; Said insulating barrier 12 can adopt that electrical insulating property is good, the inorganic of light-permeable (like silica or other materials and combination), organic material (like polyarylsulfone (PAS) or the other materials and the combination of polyimide, light-permeable), or the combination of organic-inorganic material; The material of first solar cell layer 10 and second solar cell layer 14 can adopt inorganic (like membrane polysilicon, amorphous silicon, microcrystal silicon, nano TiO 2 crystal, cadmium sulfide, cadmium telluride, GaAs, CIS, CIGS, zinc phosphide or other multi-element compounds; Or combinations thereof) or adopt organic material (like phthalocyanine compound, porphyrin, cyanines, polythiofuran derivative, polyphenylene ethylene base, Merlon, polyvinyl acetate, the polyethylene card azoles of p type; The diimide derivative of n type, naphthalimide derivative, pyrene compound), or organic and inorganic doping system (like DSSC).

The two glass photovoltaic component solar battery core boards of the utility model building materials type can adopt plated film modes such as magnetron sputtering, metal organic chemical vapor deposition (MOCVD), vapour deposition method to make nesa coating; Make thin-film solar cells knot layer with employing enhancement mode plasma auxiliary chemical vapor deposition method (PECVD), concrete technological process is following: 1, flexible substrate blanking, cleaning, oven dry; 2, make first nesa coating; 3, use the laser grooving and scribing conducting film on request; 4, aforesaid substrate is packed into " deposition clamp ", and preheating; 5, the PECVD (plasma reinforced chemical vapour deposition stove) that packs into after the substrate preheating carries out the deposition of P-N or P-I-N (or P-I-N/P-I-N) semiconductor junction; 6, having deposited the back takes out substrate and puts into cooling chamber and cool off at a slow speed; 7, laser grooving and scribing solar cell rete is so that first nesa coating is connected with second nesa coating of back; 8, on the aforesaid substrate face, make second nesa coating; 9, on request with laser grooving and scribing second nesa coating and first solar cell knot layer; 10, on aforesaid substrate, make insulating barrier; 11, with laser grooving and scribing insulating barrier, second nesa coating and first solar cell knot layer are drawn and worn; 12, make the 3rd nesa coating; 13, with laser grooving and scribing the 3rd nesa coating; 14, repeating step 4,5,6, on aforesaid substrate, make second solar cell knot layer; 15, with laser second solar cell knot layer, the 3rd nesa coating, insulating barrier are drawn and worn; 16, on aforesaid substrate, make the 4th nesa coating; 17, with laser the 4th nesa coating, second solar cell knot layer, the 3rd nesa coating, insulating barrier, second nesa coating and first solar cell knot layer are drawn and worn, realize that whole plate connected by the sub-battery of several monomers; 18, make output electrode; 19, IV tests, and tests the photovoltaic property of above-mentioned form film solar battery core board.

Fig. 8 B is two glass photovoltaic component solar battery core board detailed structure two sketch mapes of the utility model building materials type.

Shown in Fig. 8 B, flexible thin-film solar cell central layer 2 specifically comprises flexible substrate 8, first conducting film 9, first solar cell layer 10, second conducting film 11, second solar cell layer 14, the 3rd conducting film 15.Narration for each structure sheaf is the same.Note simultaneously: the polarity of first solar cell layer 10 and second solar cell layer 11 is around second conductive layer, 11 symmetric arrangement, so that first solar cell layer 10 and second solar cell layer, 11 shared second conductive layers 11 carry out electric energy output.

Production method and the technological process isostructure one of the two glass photovoltaic component solar battery core board detailed structure two of the utility model building materials type, but structure two than structure one simply, production method and technological process be easy, cost of manufacture is low.The technological process of its making is following: 1, flexible substrate blanking, cleaning, oven dry; 2, make first nesa coating; 3, use the laser grooving and scribing conducting film on request; 4, aforesaid substrate is packed into " deposition clamp ", and preheating; 5, the PECVD (plasma reinforced chemical vapour deposition stove) that packs into after the substrate preheating carries out the deposition of P-N or P-I-N (or P-I-N/P-I-N) semiconductor junction; 6, having deposited the back takes out substrate and puts into cooling chamber and cool off at a slow speed; 7, laser grooving and scribing solar cell rete is so that first nesa coating is connected with second nesa coating of back; 8, on the aforesaid substrate face, make second nesa coating; 9, use laser grooving and scribing second nesa coating on request; 10, repeating step 4,5,6, on aforesaid substrate, make second solar cell knot layer; 11, with laser second solar cell knot layer, second nesa coating, first solar cell knot layer are drawn and worn; 12, on aforesaid substrate, make the 3rd nesa coating; 13, with laser the 3rd nesa coating, second solar cell knot layer are drawn and worn, realize that whole plate is by the sub-battery series connection of several monomers; 14, make output electrode; 15, IV tests, and tests the photovoltaic property of above-mentioned form film solar battery core board.

Fig. 9 A to Fig. 9 C is the solar cell layer structural representation of the used solar battery core board of the utility model.

Shown in Fig. 9 A, solar cell layer comprises the first type layer 16, the second type layer 17; Shown in Fig. 9 B, solar cell layer comprises the first type layer 16, intrinsic layer 18, the second type layer 17; Shown in Fig. 9 C, solar cell layer comprises the first type layer 16, intrinsic layer 18, the second type layer 17, the first type layer 19, intrinsic layer 20, the second type layer 21; The first type layer can be p type conductive layer, and the second type layer is a n type conductive layer, or the first type layer can be n type conductive layer, and the second type layer is a p type conductive layer.

First solar cell layer 10 among above-mentioned Fig. 8 A and Fig. 8 B and second solar cell layer 14 can be the structure of Fig. 9 A or the structure of Fig. 9 B; Or the lamination of the structure of the lamination of the structure of Fig. 9 A (i.e. the battery layers of two Fig. 9 A structures series connection) or Fig. 9 B (i.e. the battery layers of two Fig. 9 B structures series connection), or above-mentioned both or many persons' lamination makes up.

Figure 10 A to Figure 10 C is that solar cell layer is the solar battery core board electrical block diagram of unijunction, binode, three knots.

First solar cell layer 10 of the solar battery core board of the two glass photovoltaic components of the utility model building materials type and second solar cell layer 11 can adopt parallel way to constitute a solar subcells (by the solar cell that laser is cut apart, also conduct constitutes the series unit of thin-film solar cells group string).The output voltage of solar cell depends mainly on the band gap (bandwidth between conduction band and valence band) of material itself; And change very for a short time with the sunray power; But the output current of solar cell but depends mainly on the sunray intensity that acts on it, and changes very greatly with the sunray power.The lamination solar cell (like Fig. 9 A structure or Fig. 9 B structure) of different big spatia zonularises absorbs the light of different wave length; Though output voltage values is different separately; But all in an one magnitude; And the light intensity of each wavelength distributes very inhomogeneous (energy of light is very inhomogeneous with Wavelength Assignment) in the sunray, and there is a big difference to make the output current numerical value of each lamination solar cell, and each lamination solar cell of conventional thin-film solar cells is all connected simultaneously; Though output voltage increases; But output current can only be as the criterion with the minimum current value of numerical value, thereby causes the more photoelectric current of solar cell power output contribution is had a greatly reduced quality, and has directly reduced the power output and the conversion efficiency of solar cell.

So, the sub-inside battery lamination solar cell of thin-film solar cells is together in parallel, made full use of the electric current of each lamination solar cell, help promoting the power output and the conversion efficiency of solar cell.When ground floor solar cell layer, second solar cell layer of the sub-inside battery of thin-film solar cells all adopt many knots (a plurality of P-N knots or P-I-N knot) laminated construction simultaneously; Whole thin-film solar cells will constitute first solar cell layer and second solar cell layer by series system by a plurality of single P-N knots or P-I-N knot; Enough become sub-battery by first solar cell layer with the second solar cell layer parallel connection again, constitute the thin-film solar cells of an integral body then by sub-battery series connection.

The two glass photovoltaic components of the utility model building materials type are irregular because of profile; Can not adopt the laminating machine of making conventional solar module to process; But the structure of the two glass photovoltaic components of the utility model building materials type and use material; The two-sided doubling glass conventional with glass industry is very close with curved tempering doubling glass, and can adopt bending furnace (or improved bending furnace and mould), annealing furnace, the doubling air pressure still (or improved glass doubling air pressure still) of producing curved tempering doubling glass to produce.The concrete mode of production and technological process are following: 1) upper and lower two blocks of glass stack and heat hot bending simultaneously; 2) slowly annealing cooling behind the hot bending; 3) will need the glass of tempering to put into annealing furnace and carry out tempering; 4) cooling back gets into dust free room, on the daylighting surface glass, lays EVA/PVB glued membrane, flexible thin-film solar cell central layer (having carried out contact conductor), EVA/PVB glued membrane successively, supports cover glass (note when laying daylighting glass with the light direction that receives thin-film solar cells); 5, the above-mentioned press polish volt member of treating is loaded on vacuum bag, vacuumizes; 6, take out the above-mentioned press polish volt member of treating, put into the air pressure still, close lid and heating; 7, regulate the interior humidity of air pressure still, guarantee the bonding reliability of glued membrane; 8 when treating that press polish volt member rises to uniform temperature, gives pressurization in the air pressure still, carries out the compacting of photovoltaic component.Simultaneously, the two glass photovoltaic components of the building materials type of simple surface profile also can adopt the compacting of roller press hot melt.

In a word; The flexible solar battery central layer that the utility model utilizes sub-inside battery solar cell layer to adopt the flexible thin-film solar cell of parallel way to make, can constitute an integral body with upper and lower protective layer (bend glass); Formation has photoelectric conversion efficiency height, stable performance, life-span length, safe and reliable; Not only heat insulation, insulation, sound insulation, antiultraviolet, breakage-proofly fall, but also can select printing opacity, satisfy certain daylighting demand and can two-sided daylighting generating, appearance radian building materials type double-sided glass photovoltaic component elegant in appearance simultaneously; Can be processed to the shape of various complicacies; More convenient realization solar module is consistent with building on curved surface, accomplishes solar energy and architecture-integral, has not only saved solar energy fabricating yard and building curtain wall cost; Simultaneously can be according to daylighting or use occasion; On with the preparation of material and solar battery core board, control respectively, make it to satisfy good in economic efficiency, photoelectric conversion rate is high, safe and reliable, realize the function of each side such as photovoltaic generation, building curtain wall decoration, fire safety simultaneously.

Aforementioned all is illustrating of the utility model; Not as limit; Two glass photovoltaic components of the thin-film solar cells that the sub-battery of the serial solar energy that combines that the utility model is equally applicable to the two glass photovoltaic components of building materials type on plane and only adopts single or a plurality of semiconductor junctions (P-N knot or P-I-N knot) or P-N knot and P-I-N to tie constitutes.

In sum; The solar battery core board that the utility model utilizes sub-inside battery solar cell knot layer to adopt the flexible thin-film solar cell of parallel way to make; Can constitute an integral body with upper and lower protective layer (bend glass); Formation has that photoelectric conversion efficiency height, stable performance, life-span are long, safe and reliable, both heat insulation, insulation, sound insulation, antiultraviolet, breakage-proofly fall, the building materials type double-sided glass photovoltaic component of light-permeable, both can satisfy certain daylighting demand; Can two-sided daylighting generate electricity again; The appearance radian is elegant in appearance simultaneously, convenient solar energy and the architecture-integral (BIPV) realized, and all kinds of buildings such as photovoltaic glass curtain wall, photovoltaic glass daylighting top and photovoltaic carport, photovoltaic waiting booth etc. that are particularly suitable for complex-curved and plane are used.

Although the basic principle of the utility model, structure, method are set forth through above-mentioned specific embodiment; Under the prerequisite that does not break away from the utility model main idea; According to above-described inspiration; Those of ordinary skills can not need pay creative work can implement conversion/alternative form or combination, repeats no more here.

Claims (8)

1. building materials type double-sided glass photovoltaic component comprises solar battery core board and is located at the last protective layer and the lower protective layer of solar battery core board both sides; It is characterized in that described upward protective layer is the identical bend glass of bending curvature with lower protective layer, said solar battery core board is a flexible material, and its bending curvature also bending curvature with last protective layer, lower protective layer is identical.

2. a kind of building materials type double-sided glass photovoltaic component according to claim 1 is characterized in that being respectively equipped with between described solar battery core board and last protective layer, the lower protective layer glued membrane, following glued membrane; The solar cell rete that described solar battery core board comprises flexible substrate and connects with flexible substrate.

3. a kind of building materials type double-sided glass photovoltaic component according to claim 2 is characterized in that described flexible substrate is metal forming or nonmetal flexible substrate; Described solar cell rete is the thin-film solar cells layer; Described upward glued membrane, following glued membrane are PVB film or EVA film.

4. a kind of building materials type double-sided glass photovoltaic component according to claim 3 is characterized in that described flexible substrate is provided with several through-hole structures, and described through-hole structure is circular hole, elliptical aperture, square hole, delthyrium, diamond hole or star-shaped aperture etc.; Describedly go up the bend glass that protective layer, lower protective layer are forms such as single curved, bending, compound curved, many curvatures, spherical crown surface or warp surface.

5. a kind of building materials type double-sided glass photovoltaic component according to claim 2 is characterized in that the described protective layer of going up is low iron ultrawhite toughened glass; Described lower protective layer is common toughened glass, flame resistant glass or half tempered glass.

6. a kind of building materials type double-sided glass photovoltaic component according to claim 3; It is characterized in that described solar cell rete comprises upper conductive film, lower conductive film; And the P-I-N that is located between upper conductive film and the lower conductive film ties layer; Described upper conductive film is a transparency conducting film, and described lower conductive film is transparency conducting film or aluminium film, and described P-I-N knot layer is one deck or more than two layers.

7. a kind of building materials type double-sided glass photovoltaic component according to claim 6; It is characterized in that the solar cell rete on the said solar battery core board is divided into several battery sheets; The lower conductive film of each battery sheet is provided with the built-in end between the P-I-N layer that places flexible substrate and adjacent cell sheet; Said P-I-N knot layer is provided with the conduction perforation of the lower conductive film built-in end that is used to connect upper conductive film and adjacent cell sheet, and being provided with upper conductive film in described conduction is bored a hole is the electric conductor of one.

8. a kind of building materials type double-sided glass photovoltaic component according to claim 6; It is characterized in that the solar cell rete on the said solar battery core board is divided into several battery sheets; Be the tandem compound structure of single P-N ties or the cascaded structure of a plurality of P-N knot, single P-I-N knot or a plurality of P-I-N tie tandem compound structure, P-N knot and P-I-N knot, or be the parallel connection mode of aforementioned structure.