CN103165694A - Solar cell component and manufacturing method thereof - Google Patents
Solar cell component and manufacturing method thereof Download PDFInfo
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- CN103165694A CN103165694A CN2011104074034A CN201110407403A CN103165694A CN 103165694 A CN103165694 A CN 103165694A CN 2011104074034 A CN2011104074034 A CN 2011104074034A CN 201110407403 A CN201110407403 A CN 201110407403A CN 103165694 A CN103165694 A CN 103165694A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
A solar cell component comprises an upper encapsulation body, a first electric conduction structure, a solar cell, a second electric conduction structure and a lower encapsulation body, the solar cell comprises a plurality of parallel strip-shaped solar cell units, and front electrodes of the solar cell units comprise a plurality of parallel electrodes covering part of light entering faces of the solar cell units. Preferably, the solar cell units are inserted in a plurality of parallel strip-shaped grooves of the upper encapsulation body and/or the lower encapsulation body; the first electric conduction structure comprises at least one electric conduction bar, the first electric conduction structure is contacted with the front electrodes of the solar cell unit; the second electric conduction structure comprises at least one second electric conduction bar and is arrayed with the first electric conduction structure in a staggering mode; and a surface of the upper encapsulation body is provided with a light ray adjusting structure. Correspondingly, the invention further provides a manufacturing method of the solar cell component. The solar cell component has the advantages of being low in cost, material-saving, simple in process, and high in transferring efficiency.
Description
Technical field
The present invention relates to area of solar cell, relate in particular to a kind of solar module and manufacture method thereof.
Background technology
In recent years, due to problems such as energy shortage and environmental pollutions, solar energy becomes one of scheme addressed these problems, and, along with the developing rapidly of solar cell and semiconductor industry, solar cell is widely used in every field.Since coming out from solar cell, the conversion efficiency that how to reduce the cost of solar cell and how to improve solar cell is solar cell practitioner's target always.
Improving the light absorbing ability of solar cell is one of important channel of improving conversion efficiency of solar cell, wherein, form suede structure in solar cell surface, can effectively reduce the reflection loss of sunlight at silicon chip surface, be to improve a kind of important method of the light absorbing ability of solar cell in prior art.But, form matte in solar cell surface, need in the manufacture process of silicon chip of solar cell, by the method for corroding etching, complete, its manufacture craft is comparatively complicated.
And the height of solar cell cost depends primarily on the height for the manufacture of the silicon chip of solar cell cost.At present, solar cell normally consists of the silicon chip of monoblock, or is in series by the silicon chip of a plurality of monoblocks, and wherein, the area of silicon chip is larger, and generating efficiency is just higher.But, manufacture not only complex process of silicon chip that area is larger, cost is also higher.
Therefore, need that to propose a kind of manufacture craft simple, with low cost and can effectively improve again solar module and the manufacture method thereof of conversion efficiency badly.
Summary of the invention
The purpose of this invention is to provide a kind of solar module and manufacture method thereof, its manufacture craft is simple, with low cost and can effectively improve the conversion efficiency of solar cell.
According to an aspect of the present invention, a kind of solar module is provided, this assembly comprises packaging body, the first conductive structure, solar cell, the second conductive structure and lower package body, wherein: described upper packaging body is positioned at advancing on the light face of solar cell, described solar cell has front electrode and back electrode, before being somebody's turn to do, electrode and back electrode lay respectively at advancing on light face and shady face of solar cell, described the first conductive structure and the second conductive structure are electrically connected with described solar cell respectively, it is characterized in that:
Described solar cell comprises a plurality of parallel strip solar battery cells, and the front electrode of this solar battery cell covers the part of described solar battery cell and advances the light face;
Described the first conductive structure comprises at least one the first bus, and described the first conductive structure contacts with the front electrode of described solar battery cell;
Described the second conductive structure comprises at least one the second bus, and described the second conductive structure and described the first conductive structure are staggered;
There is the light adjustment structure on the surface of described upper packaging body and/or lower package body.
Preferably, described solar battery cell is embedded in the strip groove in described upper packaging body and/or lower package body.
The present invention on the other hand, also provides a kind of manufacture method of solar module, and the method comprises:
A) form a plurality of strip solar battery cells;
B) described a plurality of strip solar battery cells are sealed between upper packaging body and lower package body, for embedding described a plurality of strip solar battery cell, advancing between light face and upper packaging body and having respectively the first conductive structure and the second conductive structure for being electrically connected described a plurality of strip solar battery cells between shady face and lower package body at described a plurality of strip solar battery cells;
C) form the light adjustment structure on described on the surface of packaging body.
Compared with prior art, the present invention has the following advantages:
1) solar cell is consisted of the solar battery cell of a plurality of strips, and the full wafer silicon chip larger with usable floor area in prior art forms solar cell and compare, and forms described solar battery cell, and its manufacturing process is simple, and cost is relative also lower;
2) form the light adjustment structure being positioned at the upper packaging body surface that solar battery cell advances on the light face,, form suede structure to reach sunken light effect on upper packaging body surface, or form fresnel lens array to reach the effect of optically focused on upper packaging body surface.Wherein, suede structure can be by collecting surface emitting light again, reach the effect that reduces the surface reflection loss, can also form sunken light at inside battery simultaneously, by internal reflection, light is trapped in to inside solar energy battery, and Fresnel Lenses can converge more sunlight effectively, two kinds of structures all can improve the utilance of solar energy significantly, thereby improve significantly the conversion efficiency of battery.In addition, the technique that forms the light adjustment structure on upper packaging body surface is comparatively simple, especially on upper packaging body surface, forms the technique of suede structure, forms the technique of suede structure in solar cell surface compared to tradition, more simple, also is easier to realize.
The accompanying drawing explanation
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
The manufacture method flow chart that Fig. 1 is solar module according to an embodiment of the invention;
The cross-sectional schematic that Fig. 2 to Figure 10, Figure 13 and Figure 16 are a plurality of each fabrication stages of strip solar battery cell of formation according to the present invention;
Figure 11 and Figure 12 are respectively schematic top plan view and the elevational schematic view of Figure 10;
Figure 14 and Figure 15 are respectively schematic top plan view and the elevational schematic view of Figure 13;
Figure 17 and Figure 18 are respectively schematic top plan view and the elevational schematic view of Figure 16;
Figure 19, Figure 21, Figure 23, Figure 26 and Figure 28 are according to the schematic top plan view that solar battery cell is encapsulated to each stage of the present invention;
The cross-sectional schematic along hatching line AA ' that Figure 20 is Figure 19;
The cross-sectional schematic along hatching line AA ' that Figure 22 is Figure 21;
Figure 24 and Figure 25 be respectively Figure 23 along hatching line AA ' with along the cross-sectional schematic of hatching line BB ';
The cross-sectional schematic along hatching line BB ' that Figure 27 is Figure 26;
The cross-sectional schematic along hatching line AA ' that Figure 29 is Figure 28;
Figure 30 is to the cross-sectional schematic along hatching line AA ' after the solar module pressing cap rock shown in Figure 28 and bottom;
Figure 31 and Figure 32 are respectively according to one embodiment of present invention the cross-sectional schematic that forms suede structure and cylinder or fresnel lens array on the surface of packaging body on described;
Figure 33 and Figure 34 are respectively according to another embodiment of the invention the cross-sectional schematic that forms suede structure and cylinder or fresnel lens array on the surface of packaging body on described; And
Figure 35 and Figure 36 are respectively according to still another embodiment of the invention the cross-sectional schematic that forms suede structure and cylinder or fresnel lens array on the surface of packaging body on described.
Embodiment
Below describe embodiments of the invention in detail, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
Disclosing hereinafter provides many different embodiment or example to be used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter parts and the setting of specific examples are described.Certainly, they are only example, and purpose does not lie in restriction the present invention.In addition, the present invention can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and purpose clearly, itself do not indicate the relation between discussed various embodiment and/or setting.In addition, the invention provides the example of various specific technique and material, but those skilled in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.It should be noted that illustrated parts are not necessarily drawn in proportion in the accompanying drawings.The present invention has omitted description to known assemblies and treatment technology and technique to avoid unnecessarily limiting the present invention.
According to an aspect of the present invention, provide a kind of solar module, please refer to Figure 31 and Figure 32.As shown in Figure 31 and Figure 32, this assembly comprises packaging body, the first conductive structure, solar cell, the second conductive structure and lower package body from top to bottom.
Wherein, described solar cell consists of a plurality of parallel strip solar battery cells, each solar battery cell comprises at least one PN junction (with reference in figure 4 shown in dotted line), and front electrode 107 (with reference to Figure 27) and back electrode 106, in the present embodiment, described PN junction is positioned at the zone of advancing the light face near the solar cell master, described front electrode 107 comprises an electrode or a plurality of parallel pole, the plurality of parallel pole is positioned at advancing on the light face of solar battery cell, the part that covers described solar battery cell is advanced the light face, sunlight enters solar battery cell inside by the surface do not covered by described front electrode 107, described back electrode 106 is positioned on the shady face of solar battery cell, in the present embodiment, described back electrode 106 covers whole shady faces of solar battery cell, and in other embodiments, described back electrode 106 also can only cover the part shady face of solar battery cell.The material that is used to form PN junction in described solar battery cell can be a kind of or its combination in any in single crystalline Si, monocrystalline Ge, single crystalline Si Ge, polycrystalline Si, polycrystalline Ge, polycrystal SiGe, amorphous Si, amorphous Ge, amorphous SiGe, III-V or II-VI compound semiconductor; Preferably, the long side face of described solar battery cell comprises the insulation side wall, to guarantee the not short circuit from the side of PN junction in solar battery cell.The width of described solar battery cell (w in Fig. 3) preferably is less than 5mm; The material of described front electrode 107 and back electrode 106 is preferably metal material, and metal material conducts electricity very well.Wherein, described metal material comprises a kind of or its combination in any in Al, Cr, Cu, Ag, Au, Fe, Ni, Pb, Zn, Co, Ti, Mg, Sn.In other embodiments, the material of described front electrode 107 and back electrode 106 can also be deposit transparent conductive oxide (Transparent Conductive Oxide, TCO), and wherein, described TCO comprises SnO
2, In
2o
3, ZnO, ITO, CdO, Cd
2snO
4, a kind of or its combination in any in FTO, AZO.When the material of described back electrode 106 is the TCO material, may apply one deck reflectance coating at the shady face of solar battery cell, may transmit the outer light reflection of cell body and return, thus the conversion efficiency of enhancing sunlight.
The solar battery cell of described a plurality of strips is sealed between upper packaging body and lower package body abreast, and wherein, described upper packaging body is positioned at advancing on the light face of solar battery cell, and described lower package body is positioned under the shady face of solar battery cell.Preferably, described upper packaging body and/or lower package body have a plurality of parallel strip grooves 301 (with reference to Figure 19 and Figure 20), for solar battery cell is embedded in this groove 301 and is fixed, preferably, the consistent size of the size of described groove 301 (length and the width that comprise groove 301) and solar battery cell, and the quantity of described groove 301 is consistent with the quantity of solar battery cell, that is, solar battery cell is corresponding one by one with groove 301.The advantage of groove is to limit easily the position of each bar shaped solar cell.But also can not need groove, for example on a smooth lower package body, arrange a plurality of bar shaped solar cells, two ends clamping position by every solar cell, upper packaging body and lower package body are clamped to solar cell, then heat the softening packaging body of pressurization and also can realize the encapsulation of solar cell.Wherein, described upper packaging body and lower package body can be single layer structure, , described upper packaging body is upper packaging adhesive film 304, lower package body is lower packaging adhesive film 300, the material of described upper packaging adhesive film 304 and lower packaging adhesive film 300 is preferably ethane-acetic acid ethyenyl resin copolymer (EVA), in other embodiments, the material of described upper packaging adhesive film 304 and lower packaging adhesive film 300 can also comprise polyvinyl butyral resin (PVB), PETG (PET), PC (Merlon), PMMA (polymethyl methacrylate), high density polyethylene (HDPE) (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE) (LDPE), polypropylene (PP), polystyrene (PS), TPU, silicone, ionomer, a kind of or its combination in any in light-cured resin.The material of the material of described upper packaging adhesive film 304 and lower packaging adhesive film 300 can be identical, also can be different.Preferably; as shown in Figure 33 and Figure 34; described upper packaging body and lower package body are double-decker; except comprising upper packaging adhesive film 304 and lower packaging adhesive film 300; also comprise the cap rock 307 be positioned on packaging adhesive film 304 and be positioned at the bottom 308 under lower packaging adhesive film 300; described cap rock 307 and bottom 308 can further be reinforced solar battery cell on the basis of upper packaging adhesive film 304 and lower packaging adhesive film 300, play a protective role.Wherein, the material of described cap rock 307 and bottom 308 comprises glass or polymer and combination thereof, wherein glass comprises: hang down iron glass, toughened glass, plate glass, textured glass, ultryiolet ray transmitting glass, SiO are arranged
2a kind of or its combination in any in the AR coated glass, and polymer comprises: ethylene-tetrafluoroethylene copolymer, polyvinyl fluoride, THV200, PET, ethane-acetic acid ethyenyl resin copolymer (EVA), polyvinyl butyral resin (PVB), PETG (PET), PC (Merlon), PMMA (polymethyl methacrylate), high density polyethylene (HDPE) (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE) (LDPE), polypropylene (PP), polystyrene (PS), TPU, silicone, ionomer, a kind of or its combination in any in light-cured resin.The material of described cap rock 307 and bottom 308 can be identical, also can be not identical.In other embodiments, according to the design needs, described upper packaging body can be also single layer structure, and lower package body is double-decker, and as shown in Figure 35 and Figure 36, this is no longer going to repeat them.
There is the first conductive structure on described between packaging body and solar battery cell, have the second conductive structure between described lower package body and solar battery cell, described the first conductive structure and the second conductive structure are for being electrically connected described a plurality of solar battery cells.In the present embodiment, described the first conductive structure comprises at least one the first bus 303 (with reference to Figure 26), and described the first conductive structure contacts with the front electrode 107 of described solar battery cell, preferably, the quantity of described the first bus 303 is identical with the quantity of parallel pole in electrode 107 before solar battery cell, and the width of every the first bus 303 is consistent with the width of described parallel pole,, described the first bus 303 can coincide with parallel pole just, can contact with parallel pole to greatest extent and reduce contact resistance.Described the second conductive structure comprises at least one the second bus 302, and described the second conductive structure and described the first conductive structure are staggered, wherein, the quantity of described the second bus 302 is relevant with the material of solar battery cell back electrode 106, if the back electrode of described solar battery cell 106 is the metal materials with satisfactory electrical conductivity, the quantity of described the second bus 302 is without too much, even only need one and can play the effect be electrically connected preferably, if the conductivity of described solar battery cell back electrode 106 materials is slightly weaker compared to metal material, TCO material for example, can increase according to the character of back electrode 106 materials the quantity of the second bus 302, thereby reach conductive effect preferably.The material of described the first bus 303 and the second bus 302 comprises TCO or metal material; Wherein said TCO comprises: SnO2, In2O3, ZnO, ITO, CdO, Cd2SnO4, FTO, AZO or its combination; Described metal material comprises a kind of or its combination in any in Al, Cr, Cu, Ag, Au, Fe, Ni, Pb, Zn, Co, Ti, Mg, Sn.The material of described the first bus 303 and the second bus 302 can be identical, also can be different.The mid portion of described the first bus 303 and the second bus 302 is sealed between described upper packaging body and lower package body, its two ends extend to outside described upper packaging body and lower package body, for front electrode 107 and the back electrode 106 of drawing solar battery cell.
Have the light adjustment structure on the surface of packaging body on described, this light adjustment structure, before sunlight is incident upon solar battery cell, is carried out certain processing to sunlight, and this processing comprises and falls into that light is processed or optically focused is processed.In order to reach the effect that falls into light, described light adjustment structure can be suede structure 305, as shown in figure 31; In order to reach the effect of optically focused, described light adjustment structure can be cylinder or fresnel lens array, shown in figure 32, wherein, described cylinder or fresnel lens array are comprised of a plurality of cylinders or Fresnel Lenses 306, and this Fresnel Lenses 306 can be the Fresnel Lenses that upper surface is dentation, utilize the shape on Fresnel Lenses surface to be converged sunlight, can also upper surface be the planar Fresnel lens, utilize the structure of Fresnel Lenses inside to realize converging of sunlight.The Fresnel Lenses that wherein upper surface is plane more is convenient to clean and is safeguarded.According to the size of solar battery cell and the performance parameter of upper package material (as refractive index), formulate the size of Fresnel Lenses 306, thus can be so that the sunlight (arrow 500) by cylinder or Fresnel Lenses 306 and upper packaging body focuses on the bar shaped solar battery cell.
With traditional solar module, compare, solar module provided by the invention has the following advantages:
The first, solar cell is consisted of the solar battery cell of a plurality of strips, the full wafer silicon chip larger with usable floor area in prior art forms solar cell and compares, and forms described solar battery cell, and its manufacturing process is simple, save material, cost is relative also lower;
The second, form the light adjustment structure being positioned at the upper packaging body surface that solar battery cell advances on the light face,, form suede structure to reach sunken light effect on upper packaging body surface, or form Fresnel Lenses to reach the effect of optically focused on upper packaging body surface.Wherein, suede structure can be by collecting surface emitting light again, reach the effect that reduces the surface reflection loss, can also form sunken light at inside battery simultaneously, by internal reflection, light is trapped in to inside battery, and cylinder or Fresnel Lenses can converge more sunlight effectively, two kinds of structures all can improve the utilance of solar energy significantly, thereby improve significantly the conversion efficiency of battery.In addition, the technique that forms the light adjustment structure on upper packaging body surface is comparatively simple, especially on upper packaging body surface, forms the technique of suede structure, forms the technique of suede structure in solar cell surface compared to tradition, more simple, also is easier to realize.
Correspondingly, the present invention also provides a kind of manufacture method of solar module, as shown in Figure 1.Below, in connection with Fig. 2 to Figure 36, the manufacture method of solar module in Fig. 1 is specifically described.
Referring to figs. 2 to Figure 18, in step S101, form a plurality of strip solar battery cells.
Particularly, at first, substrate 100 is provided, as shown in Figure 2, described substrate 100 comprises first surface 100-1 and the second surface 100-2 relative with first surface 100-1, wherein, described substrate 100 is Semiconductor substrate, be for example a kind of of silicon, germanium and compound semiconductor or its combination, include but not limited to single crystalline Si, monocrystalline Ge, single crystalline Si Ge, described substrate 100 can also be polycrystalline Si, polycrystalline Ge, polycrystal SiGe, amorphous Si, amorphous Ge, amorphous SiGe, III-V or II-VI compound semiconductor or its combination or its combination.In other embodiments, can generate in several ways this substrate 100, such as deposit, epitaxial growth etc., described substrate 100 can have N-type doping configuration or P type doping configuration.The thickness of described substrate 100 preferably is less than 5mm.
Especially, form substrate layer 100a on the first surface 100-1 of described substrate 100 and second surface 100-2, and first surface 100-1 and the second surface 100-2 of described substrate 100 carried out to composition.Then, the described substrate layer 100a of take is etching stop layer, described substrate 100 is carried out to etching, form at least two the first groove 102-1 from the first surface 100-1 of described substrate 100, and form at least one second groove 102-2 from the second surface 100-2 of described substrate 100, wherein each described second groove 102-2 is between two adjacent described the first groove 102-1, thereby forms the vertical base plate array that at least two substrates 102 and at least one substrate 101 form, as shown in Figure 3.Because the thickness of described substrate 100 is less than 5mm, so utilize the thickness (meaning with w in Fig. 3) of the formed substrate 102 of substrate 100 thickness also to be less than 5mm.Described substrate 102 has first surface 102b and second surface 102a, at this, the sidewall of the second groove 102-2 is called to the first surface 102b of substrate, and the sidewall of the first groove 102-1 is called the second surface 102a of substrate 102.
Then, as shown in phantom in Figure 4, by the mode of the ion diffusion of for example adulterating, form PN junction in described substrate 102, that is,, when described substrate 102 has N-type doping configuration, from first surface 102b or the second surface 102a of described substrate 102, described substrate 102 is carried out to the diffusion of P type alloy; When described substrate 102 has P type doping configuration, from first surface 102b or the second surface 102a of described substrate 102, described substrate 102 is carried out to the diffusion of N-type alloy.The semiconductor layer that in other embodiments, can also have different doping types from described substrate 102 by the first surface 102b at described substrate 102 or second surface 102a deposition forms PN junction.Wherein, PN ties the surface of close substrate 102 will advance as the master of solar cell the light face,, if adulterated from the first surface 102b of described substrate 102, the first surface 102b of described substrate 102 will advance as the master of solar cell the light face, if adulterated from the second surface 102a of described substrate 102, the second surface 102a of described substrate 102 will advance as the master of solar cell the light face.In the present embodiment, being doped to example with the first surface 102b from described substrate 102 describes.
Preferably, there is the substrate 102 of PN junction in formation after, by processes such as spraying, CVD, PVD, ALD, evaporation, spin coating or its combinations, form flexible material layer 103 at least part of substrate 101 surperficial and/or at least part of substrate 102 surfaces of vertical base plate array, as shown in Figure 5.Wherein, described flexible material layer 103 comprises a kind of or its combination in any in metal, polymer, nano material.Described flexible material layer 103 has suitable flexibility, ductility and adhesive force, can reduce follow-up possibility that in substrate 102 stretching flattening processes, substrate 101 breaks.
Then, as shown in Figure 6, the whole board structure that stretches reposefully from vertical base plate array two ends, form the planar substrates array; As shown in Figure 7 and Figure 8, this planar substrates array is placed on conveyer belt 104, utilize for example laser along perpendicular to the direction (direction of arrow 10 in Fig. 7) of planar substrates array, cutting described substrate 101 and flexible material layer 103, base plate array to be divided into to independently a plurality of substrates 102.
As shown in Figures 9 to 11, by modes such as sucker 105 or mechanical arms, a plurality of strip substrates 102 that separate are put into to wafer holder 200, by methods such as selective etchs, optionally remove flexible material layer 103 or remove described substrate 101 and flexible material layer 103.When only removing flexible material layer 103, substrate 101 still is retained in the side of solar battery cell as the insulation side wall, is conducive to avoid in subsequent technique by the PN junction short circuit of solar battery cell.Wherein, described wafer holder 200 has a plurality of fields, can place a substrate 102 in each field, and in addition, the bottom of described wafer holder 200 each field also has a plurality of parallel openings 201, as shown in figure 12.
After removing flexible material layer 103 or removing described substrate 101 and flexible material layer 103, need to utilize and such as cleaning fluids such as deionized waters, described substrate 102 is cleaned, to remove the pollution impurity on described substrate 102 surfaces.Because the bottom of described wafer holder 200 each field has a plurality of parallel openings 201, thereby can guarantee with the first surface 102b of the contacted described substrate 102 of described wafer holder 200, also can be cleaned well in the process of cleaning.After having cleaned, described substrate 102 is carried out to drying or annealing.
Then, electrode 107 and form back electrode 106 at second surface 102a before the first surface 102b of the substrate 102 of described a plurality of strips forms, thus form a plurality of solar battery cells, please refer to Figure 13 to Figure 18.As shown in FIG. 13 to 15, use described wafer holder 200 by described substrate 102 clamping sides, after substrate 102 is clamped, use the method for evaporation or sputter, opening 201 by wafer holder 200 bottoms, electrode 107 before the zone exposed at the first surface 102b of described substrate 102 forms, second surface 102a at described substrate forms back electrode 106, to form solar battery cell, as shown in Figure 16 to Figure 18, wherein, what have that the first surface 102b of front electrode 107 will be as solar cell advances the light face, second surface 102a with back electrode 106 will be as the shady face of solar cell, be positioned at into the front electrode 107 on the light face and comprise a plurality of parallel electrodes, the shape of the plurality of parallel pole is consistent with the shape of wafer holder 200 bottom openings, when the front electrode 107 of solar battery cell is opaque, sunlight can be injected by the zone between parallel pole the inside of solar battery cell.In addition, because described substrate 102 is clamped by wafer holder 200, so the sidewall of substrate 102 can not form conducting film, thereby avoided the short circuit of front electrode 107 and back electrode 106, if the substrate layer of retention substrate sidewall is as the insulation side wall can obtain better insulation effect.The material of described front electrode 107 and back electrode 106 is preferably metal material, and metal material not only conducts electricity very well, and light tight, can be reflected transmiting the external light of solar battery cell, strengthens the conversion efficiency of sunlight.In other embodiments, the material of described front electrode 107 and back electrode 106 can also be deposit transparent conductive oxide (Transparent Conductive Oxide, TCO), and wherein, described TCO comprises SnO
2, In
2o
3, ZnO, ITO, CdO, Cd
2snO
4, a kind of or its combination in any in FTO, AZO.When the material of described back electrode 106 is TCO, may apply at the shady face of solar battery cell one deck reflectance coating (not shown), may transmit the outer light reflection of cell body and return, thus the conversion efficiency of enhancing sunlight.
Referring to figures 19 through Figure 29, in step S102, described a plurality of strip solar battery cells are sealed between upper packaging body and lower package body, wherein, preferably, described upper packaging body and/or lower package body have a plurality of parallel strip grooves 301, for embedding described a plurality of strip solar battery cell, advancing between light face and upper packaging body and having respectively the first conductive structure and the second conductive structure for being electrically connected described a plurality of strip solar battery cells between shady face and lower package body at described a plurality of strip solar battery cells.
Particularly, after the solar battery cell that forms a plurality of strips, need to be encapsulated it, this encapsulation step is as follows: at first, as shown in Figure 19 and Figure 20, the lower packaging adhesive film 300 of impression, form a plurality of parallel strip grooves 301 on described lower packaging adhesive film 300, preferably, the size of described parallel strip groove 301 (length and the width that comprise groove 301) is measure-alike with solar battery cell, and the quantity of described groove 301 is consistent with the quantity of solar battery cell, , a groove 301 can be used to fix a solar battery cell just.Wherein, the material of described lower packaging adhesive film 300 comprises ethane-acetic acid ethyenyl resin copolymer (EVA), polyvinyl butyral resin (PVB), PETG (PET), PC (Merlon), PMMA (polymethyl methacrylate), a kind of or its combination in any in high density polyethylene (HDPE) (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE) (LDPE), polypropylene (PP), polystyrene (PS), TPU, silicone, ionomer, light-cured resin.
Then, as shown in Figure 21 and Figure 22, form the second conductive structure at the upper surface of described lower packaging adhesive film 300 and the inner surface of groove 301, at subsequent step, a plurality of solar battery cells being electrically connected by back electrode 106.Wherein, described the second conductive structure comprises one or more second buss 302, the quantity of described the second bus 302 is relevant with the material of solar battery cell back electrode 106, if the back electrode of described solar battery cell 106 is the metal materials with satisfactory electrical conductivity, the quantity of described the second bus 302 is without too much, even only need one and can play the effect be electrically connected preferably, if the conductivity of described solar battery cell back electrode 106 materials is slightly weaker compared to metal material, TCO material for example, can increase according to the character of back electrode 106 materials the quantity of the second bus 302, thereby reach conductive effect preferably.Inner surface by the upper surface at described lower packaging adhesive film 300 and groove 301 prints described the second bus 302 of formation, perhaps by the mode of evaporation, or directly described the second bus 302 is fitted in to the upper surface of described lower packaging adhesive film 300 and the inner surface of groove 301.The material of described the second bus 302 comprises TCO or metal material; Wherein said TCO comprises: SnO2, In2O3, ZnO, ITO, CdO, Cd2SnO4, FTO, AZO or its combination; Described metal material comprises a kind of or its combination in any in Al, Cr, Cu, Ag, Au, Fe, Ni, Pb, Zn, Co, Ti, Mg, Sn.
Then, as shown in Figure 23 to Figure 25, described a plurality of strip solar battery cells are embedded in described a plurality of parallel strip grooves 301, that is, one by one each solar battery cell is fixed in a groove 301.Wherein, after solar battery cell is taken out from wafer holder 200, described solar battery cell need to be carried out to the upset of 180 °, make the back electrode 106 of solar battery cell down, thus, solar battery cell after upset is embedded in groove 301, can makes the back electrode 106 of solar battery cell contact with described the second bus 302.
As shown in Figure 26 and Figure 27, after solar battery cell being embedded in the groove 301 of lower packaging adhesive film 300, form the first conductive structure in advancing on the light face of described a plurality of strip solar battery cells, for a plurality of solar battery cells are electrically connected by front electrode 107.Wherein, described the first conductive structure comprises at least one the first bus 303, and described the first bus 303 contacts with the front electrode 107 of described solar battery cell, preferably, the quantity of described the first bus 303 is identical with the quantity of parallel pole in electrode 107 before solar battery cell, and the width of every the first bus 303 is consistent with the width of described parallel pole,, described the first bus 303 can coincide with parallel pole just, can with parallel pole, contact to greatest extent, to reduce contact resistance.Described the first bus 303 also can form by the mode of for example printing, evaporation and laminating.The material of described the first bus 303 and the second bus 302 are similar, comprise TCO or metal material; Wherein said TCO comprises: SnO2, In2O3, ZnO, ITO, CdO, Cd2SnO4, FTO, AZO or its combination; Described metal material comprises a kind of or its combination in any in Al, Cr, Cu, Ag, Au, Fe, Ni, Pb, Zn, Co, Ti, Mg, Sn.Wherein, the material of described the first bus 303 can be identical with the material of described the second bus 302, also can be different.It should be noted that will be staggered the second bus 302 and the first bus 303, can not make it contact, and damages solar battery cell in case short circuit occurs when forming the second bus 302 and the first bus 303.In addition, the two ends of described the first bus 303 and the second bus 302 extend to outside lower package body, for after solar battery cell is sealed, draw front electrode 107 and the back electrode 106 of solar battery cell.
Finally, as shown in Figure 28 and Figure 29, in pressing, packaging adhesive film 304 is sealed with described lower packaging adhesive film 300, and wherein, the material of described upper packaging adhesive film 304 can be identical with the material of described lower packaging adhesive film 300, also can be different.The material of described upper packaging adhesive film 304 comprises a kind of or its combination in any in ethane-acetic acid ethyenyl resin copolymer (EVA), polyvinyl butyral resin (PVB), PETG (PET), Merlon (PC), polymethyl methacrylate (PMMA), high density polyethylene (HDPE) (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE) (LDPE), polypropylene (PP), polystyrene (PS), TPU, silicone, ionomer, light-cured resin.Now, described upper packaging adhesive film 304 is packaging body, and lower packaging adhesive film 300 is lower package body.Preferably; as shown in figure 30; pressing cap rock 307 and bottom 308 on packaging adhesive film 304 and under lower packaging adhesive film 300 on described; described cap rock 307 and bottom 308 can be on the bases of upper packaging adhesive film 304 and lower packaging adhesive film 300; solar battery cell is further reinforced, played a protective role.In this case, described cap rock 307 and upper packaging adhesive film 304 have formed upper packaging body jointly, and described lower package body and bottom 308 have formed lower package body jointly.The material of described cap rock 307 and bottom 308 comprises glass or polymer and combination thereof, wherein glass comprises: hang down iron glass, toughened glass, plate glass, textured glass, ultryiolet ray transmitting glass, SiO are arranged
2a kind of or its combination in any in the AR coated glass, and polymer comprises: ethylene-tetrafluoroethylene copolymer, polyvinyl fluoride, THV200, PET, ethane-acetic acid ethyenyl resin copolymer (EVA), polyvinyl butyral resin (PVB), PETG (PET), Merlon (PC), polymethyl methacrylate (PMMA), high density polyethylene (HDPE) (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE) (LDPE), polypropylene (PP), polystyrene (PS), TPU, silicone, ionomer, a kind of or its combination in any in light-cured resin.The material of described cap rock 307 and bottom 308 can be identical, also can be not identical.In other embodiments, according to the design needs, also pressing bottom 308 under lower packaging adhesive film 300 only, play the effect of further support to solar battery cell.
Above-mentioned encapsulation step is carried out from the bottom to top, , according to lower package body, the second bus, solar battery cell, the first bus, the order of upper packaging body is encapsulated, in other embodiments, also can be encapsulated according to contrary order, , first form the upper packaging body with a plurality of parallel grooves 301, and form the first bus 303 on the surface of upper packaging body and the inner surface of groove 301, then solar battery cell is directly moved to from wafer holder 200 in the groove 301 of upper packaging body, and the front electrode 107 of solar battery cell is contacted with the first bus 303, then form the second bus 302, finally, lower package body is alignd with upper packaging body, carry out pressing, complete the encapsulation of solar battery cell.
With reference to Figure 31 to Figure 36, in step S103, form the light adjustment structure on described on the surface of packaging body.
Particularly, below above packaging body be that single layer structure is example explanation, as shown in figure 31, form suede structure 305 being positioned at solar battery cell and advancing on the surface of packaging adhesive film 304 on described on the light face.Wherein, form suede structure 305 on the surface of upper packaging adhesive film 304 and comprise two kinds of methods: a kind of method is the fixing matte mould of the mode by for example bonding on upper packaging adhesive film 304, another kind method is making herbs into wool on upper packaging adhesive film 304, for example, can form matte with packaging adhesive film on acid solution or other solution corrosions 304, also can be under certain temperature, pressure packaging adhesive film 304 in hot padding, can also use the method for plasma process to form suede structure.
Shown in figure 32, can also be on described cylinder or fresnel lens array be set on the surface of packaging adhesive film 304, this fresnel lens array consists of a plurality of Fresnel Lenses 306, wherein, described Fresnel Lenses 306 can be the Fresnel Lenses that upper surface is dentation, utilizing the shape on Fresnel Lenses surface to be converged sunlight, can also be that upper surface is the planar Fresnel lens, utilizes the structure of Fresnel Lenses inside to realize converging of sunlight.The Fresnel Lenses that wherein upper surface is plane is convenient to clean more.The quantity of Fresnel Lenses 306 and size can be formulated according to the size of solar battery cell and the performance parameter (as refractive index) of upper packaging adhesive film 304 materials, thereby can be so that the sunlight (arrow 500) by cylinder or Fresnel Lenses 306 and upper packaging adhesive film 304 focuses on each bar shaped solar battery cell.
When upper packaging body is double-decker, that is, when upper packaging body comprises packaging adhesive film 304 and cap rock 307, on the surface of described cap rock 307, form matte 305 (as shown in figure 33) of knot or fresnel lens array (as shown in figure 34).In other embodiments, when upper packaging body is upper packaging adhesive film 304, and lower package body is when being lower packaging adhesive film 300 and bottom 308, the surface of packaging adhesive film 304 forms matte 305 (as shown in figure 35) of knot or fresnel lens array (as shown in figure 36) on described, at this, is not repeating one by one.
In other embodiments, also can be after upper packaging body surface first form suede structure or cylinder or fresnel lens array, then packaging body and lower package body in pressing, solar battery cell is encapsulated.
After above-mentioned steps completes, in described solar module, described solar battery cell has effectively utilized the thickness of substrate, under the prerequisite that does not increase whole substrate dimension, obtain the surface area of more machinable substrates, improve the utilance of substrate, compared to the larger full wafer silicon chip of area used in prior art, the cost of described solar battery cell is lower; In addition, form the light adjustment structure being positioned at the upper packaging body surface that solar battery cell advances on the light face, that is, on upper packaging body surface, form suede structure to reach sunken light effect, or form cylinder or Fresnel Lenses on upper packaging body surface to reach the effect of optically focused.Wherein, suede structure can be by collecting surface emitting light again, reach the effect that reduces the surface reflection loss, can also form sunken light at inside battery simultaneously, by internal reflection, light is trapped in to inside battery, and Fresnel Lenses can converge more sunlight effectively, two kinds of structures all can improve the utilance of solar energy significantly, thereby improve significantly the conversion efficiency of battery.In addition, the technique that forms the light adjustment structure on upper packaging body surface is comparatively simple, especially on upper packaging body surface, forms the technique of suede structure, forms the technique of suede structure in solar cell surface compared to tradition, more simple, also is easier to realize.
Although describe in detail about example embodiment and advantage thereof, be to be understood that and can carry out various variations, substitutions and modifications to these embodiment in the situation that do not break away from the protection range that spirit of the present invention and claims limit.For other examples, when those of ordinary skill in the art should easily understand within keeping protection range of the present invention, the order of processing step can change.
In addition, range of application of the present invention is not limited to technique, mechanism, manufacture, material composition, means, method and the step of the specific embodiment of describing in specification.From disclosure of the present invention, as those of ordinary skill in the art, will easily understand, for the technique, mechanism, manufacture, material composition, means, method or the step that have existed or be about to develop at present later, wherein they carry out identical function or the identical result of acquisition cardinal principle of corresponding embodiment cardinal principle of describing with the present invention, according to the present invention, can be applied them.Therefore, claims of the present invention are intended to these technique, mechanism, manufacture, material composition, means, method or step are included in its protection range.
Claims (32)
1. a solar module, this assembly comprises packaging body, the first conductive structure, solar cell, the second conductive structure and lower package body, wherein:
Described upper packaging body is positioned at advancing on the light face of solar cell, described solar cell has front electrode (107) and back electrode (106), before being somebody's turn to do, electrode (107) and back electrode (106) lay respectively at advancing on light face and shady face of solar cell, described the first conductive structure and the second conductive structure are electrically connected with described solar cell respectively, it is characterized in that:
Described solar cell comprises a plurality of parallel strip solar battery cells, and the front electrode (107) of this solar battery cell covers the part of described solar battery cell and advances the light face;
Described the first conductive structure comprises at least one the first bus (303), and described the first conductive structure contacts with the front electrode (107) of described solar battery cell;
Described the second conductive structure comprises at least one the second bus (302), and described the second conductive structure and described the first conductive structure are staggered;
There is the light adjustment structure on the surface of described upper packaging body and/or lower package body.
2. solar module according to claim 1, have strip groove (301) in described upper packaging body and/or lower package body, described solar battery cell is embedded in the strip groove (301) in described upper packaging body and/or lower package body.
3. solar module according to claim 1, wherein, described light adjustment structure is suede structure (305).
4. solar module according to claim 1, wherein, described light adjustment structure is cylindrical lens or fresnel lens array.
5. according to the described solar module of claim 1 or 3, wherein:
Described upper packaging body comprises packaging adhesive film (304), or comprises packaging adhesive film (304) and be positioned at the cap rock (307) on packaging adhesive film on this (304); And/or
Described lower package body comprises lower packaging adhesive film (300), or comprises lower packaging adhesive film (300) and be positioned at the bottom (308) under this time packaging adhesive film (300).
6. solar module according to claim 5, wherein:
The material of described upper packaging adhesive film (304) and lower packaging adhesive film (300) comprises a kind of or its combination in any in ethane-acetic acid ethyenyl resin copolymer (EVA), polyvinyl butyral resin (PVB), PETG (PET), Merlon (PC), polymethyl methacrylate (PMMA), high density polyethylene (HDPE) (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE) (LDPE), polypropylene (PP), polystyrene (PS), TPU, silicone, ionomer, light-cured resin.
7. solar module according to claim 5, wherein:
The material of described cap rock (307) and/or bottom (308) comprises glass or polymer and combination thereof;
Wherein glass comprises: hang down iron glass, toughened glass, plate glass, textured glass, ultryiolet ray transmitting glass, SiO are arranged
2a kind of or its combination in any in the AR coated glass; And
Polymer comprises: ethylene-tetrafluoroethylene copolymer, polyvinyl fluoride, THV200, PET, ethane-acetic acid ethyenyl resin copolymer (EVA), polyvinyl butyral resin (PVB), PETG (PET), Merlon (PC), polymethyl methacrylate (PMMA), high density polyethylene (HDPE) (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE) (LDPE), polypropylene (PP), polystyrene (PS), TPU, silicone, ionomer, a kind of or its combination in any in light-cured resin.
8. according to the described solar module of claim 1 or 3, wherein:
The material of described solar battery cell comprises single crystalline Si, monocrystalline Ge, single crystalline Si Ge, polycrystalline Si, polycrystalline Ge, polycrystal SiGe, amorphous Si, amorphous Ge, amorphous SiGe, III-V or II-VI compound semiconductor or its combination.
9. according to the described solar module of claim 1 or 3, wherein, the material of described front electrode (107) and/or back electrode (106) comprises TCO or metal material;
Wherein said TCO comprises: SnO2, In2O3, ZnO, ITO, CdO, Cd2SnO4, FTO, AZO or its combination;
Described metal material comprises a kind of or its combination in any in Al, Cr, Cu, Ag, Au, Fe, Ni, Pb, Zn, Co, Ti, Mg, Sn.
10. according to the described solar module of claim 1 or 3, wherein:
The material of described the first conductive structure and described the second conductive structure comprises TCO or metal material;
Wherein said TCO comprises: SnO2, In2O3, ZnO, ITO, CdO, Cd2SnO4, FTO, AZO or its combination;
Described metal material comprises a kind of or its combination in any in Al, Cr, Cu, Ag, Au, Fe, Ni, Pb, Zn, Co, Ti, Mg, Sn.
11., according to the described solar module of claim 1 or 3, wherein, the width of described solar battery cell is less than 5mm.
12. solar module according to claim 1, wherein, comprise the insulation side wall in the side on the long limit of described solar cell.
13. the manufacture method of a solar module, the method comprises:
A) form a plurality of strip solar battery cells;
B) described a plurality of strip solar battery cells are sealed between upper packaging body and lower package body, for embedding described a plurality of strip solar battery cell, advancing between light face and upper packaging body and having respectively the first conductive structure and the second conductive structure for being electrically connected described a plurality of strip solar battery cells between shady face and lower package body at described a plurality of strip solar battery cells;
C) form the light adjustment structure on described on the surface of packaging body.
14. manufacture method according to claim 13, have strip groove (301) in wherein said upper packaging body and/or lower package body, described solar battery cell is embedded in the strip groove (301) in described upper packaging body and/or lower package body.
15. manufacture method according to claim 13, wherein, described step c) comprising:
Impress or corrode the surface formation suede structure (305) of described upper packaging body.
16. manufacture method according to claim 13, wherein, described step c) comprising:
On the surface of packaging body, cylindrical lens or fresnel lens array are set on described.
17., according to claim 13 to the described manufacture method of any one in 16, wherein, described step a) comprising:
Substrate (100) is provided, this substrate (100) is divided into to the substrate (102) of a plurality of strips, wherein, described substrate (102) has first surface (102b) and the second surface (102a) relative with this first surface (102b), and has PN junction in the zone near described first surface (102b);
Electrode (107) and at second surface (102a) formation back electrode (106) before the first surface (102b) of the substrate (102) of described a plurality of strips forms.
18. manufacture method according to claim 17, wherein, the step that this substrate (100) is divided into to a plurality of strip substrates (102) comprises:
Substrate (100) is provided, described substrate (100) comprises first surface (100-1) and the second surface (100-2) relative with first surface (100-1), at the upper substrate layer (100a) that forms of described first surface (100-1) and second surface (100-2), first surface (100-1) and the substrate layer (100a) on second surface (100-2) of described substrate (100) carried out to first surface (100-1) and the second surface (100-2) that composition exposes the described substrate of part (100);
The first surface (100-1) of the described substrate (100) that etching exposes and second surface (100-2) form at least two the first grooves (102-1) and at least one the second groove (102-2), wherein each described second groove (102-2) is positioned between adjacent two described the first grooves (102-1), thereby form the vertical base plate array that at least two substrates (102) and at least one substrate (101) form, wherein, described substrate (102) has first surface (102b) and the second surface (102a) relative with this first surface (102b);
First surface (102b) to described substrate (102) is adulterated, and forms PN junction in described substrate (102);
Form flexible material layer (103) on the surperficial and/or at least part of substrate (102) of at least part of substrate (101) surface of vertical base plate array;
The described vertical base plate array that stretches forms the planar substrates array;
Utilize the described substrate of laser cutting (101) and flexible material layer (103), base plate array is divided into to independently a plurality of substrates (102).
19. manufacture method according to claim 18, wherein, also comprise and remove described flexible material layer (103) or remove described flexible material layer (103) and the step of described substrate (101) after base plate array being divided into to the step of a plurality of substrates (102) independently.
20. manufacture method according to claim 17, wherein, electrode (107) and comprising in the step of second surface (102a) formation back electrode (106) before the first surface (102b) of the substrate (102) of described a plurality of strips forms:
Described substrate (102) is kept flat to bottom and has in the wafer holder (200) of opening, wherein, the first surface (102b) of described substrate (102) touches with the bottom connection of wafer holder (200), and by described opening emerges part first surface (102b);
Use described wafer holder (200) that described substrate both sides (102) are clamped;
Method by Implantation, spraying, evaporation or sputter, the zone that first surface (102b) in described substrate (102) exposes forms front electrode (107), and the second surface (102a) in described substrate (102) forms back electrode (106).
21. manufacture method according to claim 20, wherein, the opening of described wafer holder (200) bottom is a plurality of parallel strip openings (201).
22. manufacture method according to claim 17 wherein, after the step of the substrate (102) that this substrate (100) is divided into to a plurality of strips, also comprises:
E) to the substrate (102) of described a plurality of strips cleaned, dry or annealing.
23. manufacture method according to claim 17, wherein:
The material of described substrate (100) comprises single crystalline Si, monocrystalline Ge, single crystalline Si Ge, polycrystalline Si, polycrystalline Ge, polycrystal SiGe, amorphous Si, amorphous Ge, amorphous SiGe, III-V or II-VI compound semiconductor or its combination.
24. manufacture method according to claim 17, wherein, the thickness of described substrate (100) is less than 5mm.
25. manufacture method according to claim 18, wherein:
Described flexible material layer (103) comprises a kind of or its combination in any in metal, polymer, nano material.
26. according to the described manufacture method of claim 17 or 20, wherein:
The material of described front electrode (107) and/or back electrode (106) comprises TCO or metal material;
Wherein said TCO comprises: SnO2, In2O3, ZnO, ITO, CdO, Cd2SnO4, FTO, AZO or its combination;
Described metal material comprises a kind of or its combination in any in Al, Cr, Cu, Ag, Au, Fe, Ni, Pb, Zn, Co, Ti, Mg, Sn.
27. manufacture method according to claim 13, wherein, described step b) comprising:
The lower packaging adhesive film (300) of impression, at a plurality of strip groove (301) of the upper formation of described lower packaging adhesive film (300), and form the second conductive structure at the upper surface of described lower packaging adhesive film (300) and the inner surface of groove (301);
Described a plurality of strip solar battery cells are embedded in described a plurality of strip groove, and wherein, the back electrode of described a plurality of strip solar battery cells (106) contacts with described the second conductive structure;
Form the first conductive structure in advancing on the light face of described a plurality of strip solar battery cells, wherein, described the first conductive structure contacts with the front electrode (107) of described a plurality of strip solar battery cells;
Packaging adhesive film in pressing (304) is sealed with described lower packaging adhesive film (300);
Pressing cap rock (307) and bottom (308) on packaging adhesive film (304) and under lower packaging adhesive film (300) on described.
28. manufacture method according to claim 27, wherein:
Described the first conductive structure is first bus (303) or many parallel the first buss (303); And
Described the second conductive structure is second bus (302) or many parallel the second buss (302).
29. according to the described manufacture method of claim 27 or 28, wherein:
The method that forms described the first conductive structure and the second conductive structure comprises printing, evaporation or laminating.
30. according to the described manufacture method of claim 27 or 28, wherein:
The material of described upper packaging adhesive film (304) and/or lower packaging adhesive film (300) comprises ethane-acetic acid ethyenyl resin copolymer (EVA), polyvinyl butyral resin (PVB), PETG (PET), Merlon (PC), polymethyl methacrylate (PMMA), high density polyethylene (HDPE) (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE) (LDPE), polypropylene (PP), polystyrene (PS), TPU, silicone, ionomer, a kind of or its combination in any in light-cured resin.
31. according to the described manufacture method of claim 27 or 28, wherein:
The material of described cap rock (307) and/or bottom (308) comprises glass or polymer and combination thereof;
Wherein glass comprises: hang down iron glass, toughened glass, plate glass, textured glass, ultryiolet ray transmitting glass, SiO are arranged
2a kind of or its combination in any in the AR coated glass; And
Polymer comprises: ethylene-tetrafluoroethylene copolymer, polyvinyl fluoride, THV200, PET, ethane-acetic acid ethyenyl resin copolymer (EVA), polyvinyl butyral resin (PVB), PETG (PET), Merlon (PC), polymethyl methacrylate (PMMA), high density polyethylene (HDPE) (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE) (LDPE), polypropylene (PP), polystyrene (PS), TPU, silicone, ionomer, a kind of or its combination in any in light-cured resin.
32. according to the described manufacture method of claim 27 or 28, wherein:
The material of described the first conductive structure and/or described the second conductive structure comprises TCO or metal material;
Wherein said TCO comprises: SnO2, In2O3, ZnO, ITO, CdO, Cd2SnO4, FTO, AZO or its combination;
Described metal material comprises a kind of or its combination in any in Al, Cr, Cu, Ag, Au, Fe, Ni, Pb, Zn, Co, Ti, Mg, Sn.
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| CN106935662A (en) * | 2017-02-28 | 2017-07-07 | 南通壹选工业设计有限公司 | A kind of solar power generation component |
| CN106847999A (en) * | 2017-02-28 | 2017-06-13 | 南通壹选工业设计有限公司 | A kind of manufacture method of solar power generation component |
| CN110518090A (en) * | 2019-07-25 | 2019-11-29 | 苏州迈展自动化科技有限公司 | A kind of preparation method and solar cell module of solar cell module |
| TWI816357B (en) * | 2022-04-08 | 2023-09-21 | 長庚大學 | Solar cell module and manufacturing method thereof |
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