CN203445139U - Solar cell panel - Google Patents

Solar cell panel Download PDF

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Publication number
CN203445139U
CN203445139U CN201220731146.XU CN201220731146U CN203445139U CN 203445139 U CN203445139 U CN 203445139U CN 201220731146 U CN201220731146 U CN 201220731146U CN 203445139 U CN203445139 U CN 203445139U
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China
Prior art keywords
photovoltaic
conductive
conductive region
band
region
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CN201220731146.XU
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Chinese (zh)
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利拉普拉桑纳·曼达拉普·贾亚拉姆卢
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Solaria Corp
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Solaria Corp
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The utility model provides a solar cell panel which comprises a rear cover member, a front cover member and a photovoltaic assembly. The front cover member includes a plurality of concentrator elements. The photovoltaic assembly is positioned between the front cover member and the rear cover member. The photovoltaic assembly has a plurality of photovoltaic belts which are aligned with the plurality of concentrator elements respectively. Each photovoltaic belt has a front face and a back face, and is basically made of a photovoltaic material. Each photovoltaic belt, is at least provided with a conductive area at the back face thereof, and is at least provided with a conductive leg which electrically connects the conductive area and the photovoltaic material. The solar cell panel further includes one or more buses which are electrically coupled to the conductive areas of the photovoltaic belts. According to the utility model, besides other characteristics, the conductive legs enable the manufacturing of the solar cell panel to become easier, and the solar cell panel, compared with a conventional system, has more improved system reliability.

Description

Solar panel
Technical field
The utility model relates to a kind of solar panel.
Background technology
Conventionally, a photovoltaic material comprises flaw and defect.For example, photovoltaic material comprises the defect for example, causing owing to lacking electric conducting material (, aluminium, silver etc.) on the back side of photovoltaic material, causes that electricity interrupts and performance loss during the photovoltaic band that comprises this defect in use.
In addition,, during manufacture process, conductive region may be sometimes not inclined to one side.Fig. 5 illustrates the misalignment of conductive region.As shown, the band of electric conducting material 502 is arranged on photovoltaic piece 501.In order to utilize bus to form suitable electrically contacting, suppose that electric conducting material is arranged on the precalculated position of photovoltaic piece 501.Yet for example, due to the misalignment (, photovoltaic piece 501 is placed with the angle tilting a little) of photovoltaic piece 501, a part for electric conducting material 502 fails to form suitable electrically contacting with photovoltaic material on preposition.For example, on region 503, conductive region 502 and photovoltaic piece 501 do not form suitable electrically contacting, and cause electricity to interrupt and/or performance loss.For photovoltaic band 504, what by conductive region 502 and photovoltaic piece 501, form electrically contacts, due to misalignment issues described above, and not suitably operation.Therefore, photovoltaic band 504, for example, once be encapsulated as photovoltaic module (, photovoltaic module 301), can not carry out the function of its design due to poor electrical connection.In some cases, the photovoltaic band that conductive region around has defect and/or a misalignment issues can not work.
Defect shown in Fig. 4 and Fig. 5 and/or misalignment issues affect the performance of solar energy module (for example,, such as solar energy module 100) on the contrary.Unfortunately, this defect on photovoltaic piece horizontal plane is often difficult to detect.This is the photovoltaic material of (with photovoltaic band to relatively) sheet because relatively large, and local defect does not affect overall performance more, therefore often can not detect.Yet, what is worse, if defect near the conductive region of photovoltaic band, role can be to be harmful to so.
Fig. 6 A provides the conductive region diagram of defect is around shown.Diagram 601 illustrates the situation that conductive region does not suitably form on photovoltaic region.For example, owing to not suitably not forming conductive region, the left side of conductive region is shown in and on the left side of conductive region, has black line (basic gray area is relative uniformly with conductive region right side).On right side, diagram 602 illustrates the out-of-alignment situation of conductive region.Due to misalignment, conductive region does not suitably form on photovoltaic region.
Fig. 6 B provides the diagram that the solar energy module with one or more defectiveness photovoltaic band is shown.As shown in Figure 6B, some photovoltaic bands are shown and there is " blackout area ", represent that these bands may have electrical connection poor or that disconnect at their conductive regions separately.
Therefore, should be appreciated that, in each execution mode, the utility model provides technology to solve and the defect of conductive region on photovoltaic piece and/or the problem that misalignment is associated.
Utility model content
The utility model is intended to solve and the defect of conductive region on photovoltaic piece and/or the problem that misalignment is associated.
According to another execution mode, the utility model provides a kind of solar panel.This solar panel comprises bonnet member.This solar panel also comprises protecgulum member, and this protecgulum member comprises a plurality of concentrator element.This solar panel comprises the photovoltaic module between protecgulum member and bonnet member in addition.Photovoltaic module has many photovoltaic bands, aims at respectively a plurality of concentrator element.Photovoltaic band has front and back.Photovoltaic band is comprised of photovoltaic material substantially.Each photovoltaic band at least has conductive region at its back side, and the conductive legs at least with electric coupling conductive region and photovoltaic material.This solar panel also comprises one or more buses, is electrically coupled to the conductive region of photovoltaic band.
Preferably, the described conductive region of photovoltaic band comprises ag material.
Preferably, each photovoltaic band comprises two described conductive legs of conductive region described in each.
Preferably, photovoltaic module is coupled to described bonnet member.
Preferably, protecgulum member comprises glass material.
Preferably, also comprise substantially the transparent polymer material between described bonnet member and described protecgulum member.
By mode of the present utility model, can obtain many benefits.For example, this solar energy module provides conductive legs structure (it is a part for the photovoltaic module in concentrating solar battery plate).Except other characteristic, according to conductive legs of the present utility model, make the manufacture of solar panel easier, and compare and improved system reliability with legacy system.For example, conductive legs is extended the region in conductive region electric coupling photovoltaic region wherein, thereby reduces the not risk in electric coupling photovoltaic region of conductive region.By the larger scope (reach) of the electrical connection being provided by conductive legs is provided with legacy system, can simplified manufacturing technique, and larger scope means the larger permission (tolerance) during manufacture process.For example, Alignment Process is compared and can be simplified and/or simplify with traditional handicraft.In addition, the solar energy module with conductive legs is compared with traditional solar energy module can be manufactured more cheaply, because conductive legs has improved manufacture output (that is, how flawless solar energy module) and system reliability.In specific implementations, conductive legs structure is integrated as a part for conductive region, thereby can hold dissimilar concentrator structure or photovoltaic module.Therefore, compatible according to the various embodiments of the utility model and legacy equipment.Also there is other benefit.
Accompanying drawing explanation
Fig. 1 is the reduced graph that light concentrating photovoltaic module is shown.
Fig. 2 is the reduced graph that photovoltaic apparatus is shown.
Fig. 3 A is the reduced graph illustrating according to the photovoltaic module of the utility model execution mode.
Fig. 3 B is the reduced graph illustrating according to the photovoltaic band of the utility model execution mode.
Fig. 4 is the reduced graph illustrating according to the technique that is used to form conductive region of disclosure execution mode.
Fig. 5 illustrates the misalignment of conductive region.
Fig. 6 A provides the diagram that conductive region defect is around shown.
Fig. 6 B provides the diagram of the solar energy module with one or more defect photovoltaic bands.
Fig. 7 A is the reduced graph illustrating according to the conductive region of the utility model execution mode.
Fig. 7 B and Fig. 7 C are the reduced graphs illustrating according to the benefit of the conductive legs of the utility model execution mode.
Fig. 8 is the reduced graph illustrating according to the photovoltaic band of the utility model execution mode.
Fig. 9 A and Fig. 9 B are the diagrams illustrating according to the benefit providing by conductive legs of the utility model execution mode.
Embodiment
The utility model proposes photovoltaic system and manufacturing process thereof and device.More specifically, disclosure execution mode relates to for photovoltaic band being electrically coupled to the system and method for electric bus (part for concentrating solar battery plate).In each execution mode, the utility model provides from conductive region to photovoltaic region the conductive legs of extending, to guarantee suitable being electrically connected between conductive region and photovoltaic region.Also there is other execution mode.
Disclosure execution mode is provided for manufacturing the system and method for concentrating solar battery plate.The utility model execution mode is used collective optics to reduce the amount of required photovoltaic material, thereby reduces overall cost.Note, embodiment illustrates for the purpose of illustration, and representative instance.Person of skill in the art will appreciate that other variation, modification and replacement.
According to the utility model execution mode, Photospot solar module comprises concentrator member, and concentrator member comprises the some concentrator bands that are arranged in parallel.Some undersized photovoltaic cells (each all has the some photovoltaic bands that connect by one or more bus) are assembled into large photovoltaic bag, and large photovoltaic bag comprises the photovoltaic band of aiming at concentrator band.As described below, disclosure execution mode is provided for connecting the system and method in photovoltaic region.Also there is other execution mode.
Although orientation is not a part of the present utility model, be convenient to recognize that solar energy module has when using this module side and the opposite side towards the sun, away from the face of the sun.Although this module may reside in any orientation, " ”Huo“ top, top " involvement aspect of being convenient to relate to wherein relates to the orientation of opposite side to sun side and " bottom " or " bottom ".Therefore, it is said that the element above element is by the more close upside of the element than on it at another.
Fig. 1 is the reduced graph that light concentrating photovoltaic module is shown.This figure is only example, should too not limit scope of the present utility model.Person of skill in the art will appreciate that many variations, replacement and modification.As shown in Figure 1, photovoltaic module 100 comprises concentrator structure, and concentrator structure comprises some concentrator bands, and concentrator band is aimed at the photovoltaic band of photovoltaic bag 103).For example, the photovoltaic module shown in Fig. 1 is at the U.S. Patent application the 12/709th of submitting on February 19th, 2010 being hereby expressly incorporated by reference, No. 438 and describe in the U.S. Provisional Patent Application 61/300,434 of submitting on February 1st, 2010.
In each execution mode, a plurality of elongated concentrator element (being sometimes called lens element) that concentrator structure is extended by the longitudinal direction along photovoltaic band forms.For concentrator element at least, be positioned at those execution modes of common plane, equal to their centre-to-centre spacing nominal the centre-to-centre spacing of photovoltaic band.Each concentrator element is along the direction longitudinal extension of specifying band, and the horizontal direction across band.Should be appreciated that, photovoltaic band can be other shape such as basic square equally.The concentrator element of appointment is limited to and has the region concentrator element of being less than and that also may be less than the lateral dimension of photovoltaic band while being formed the plane of the directional light that makes to incide on concentrator end face photovoltaic band below arriving.In illustrational execution mode, although optically focused can occur on the lower surface of concentrator equally, optically focused occurs on upper surface.In fact, as the standard lens in the situation that, can have two surfaces provides optically focused.
Be usually directed to provide the concentrator element of multiplying power, because photovoltaic band seems wider than itself when watching by concentrator element.In other words, when watching by concentrator element, the photovoltaic band aperture that is full of concentrator element preferably.Therefore,, from the viewpoint of incident sunlight, solar energy module seems to have the photovoltaic material across whole side scope.
Although use term multiplying power, use in the meaning of the degree being converged at light, so can similarly be known as optically focused.Multiplying power/optically focused is defined as the amount of saving photovoltaic material equally sometimes, and because photovoltaic band is conventionally wide a little than the width of light, especially obtains the light with different angles incident, so quantity is less than optics multiplying power/optically focused conventionally.Conventionally will use term multiplying power.
Provide the surface part of the concentrator element of multiplying power to there is the one or more cross section in the combination that can comprise circle, ellipse, parabola, straightway or these shapes.Although the part on the amplification of concentrator element (top conventionally) surface can be flat, be convenient to consider and relate to that to amplify surface be protruding (that is, curve or arch).For cross section, be the execution mode of semicircle, the surface of the amplifier section of concentrator element is semicolumn.Yet, conventionally use the circular arc of 180 ° of being less than opening.Although the U.S. Patent application that convex surface drawn the 61/154th, is called " annular " part in No. 357, will not use " annular " term here in the above.In certain embodiments, concentrator element is extruded glass, for example, for example, although can use other process technology (, molding) and other material (, polymer).
Fig. 2 is the reduced graph that photovoltaic apparatus is shown.The end view of the photovoltaic module 100 shown in Fig. 2 comprises concentrator 101A and 101B.For example, photovoltaic band 103A and 103B are parts for photovoltaic module, and are coupled to each other by bus.As seen from Figure 2, photovoltaic band 103A and 103B aim at respectively concentrator 101A and 101B.For example, the concentrator 101A position of photovoltaic band 103A directly over substantially of need to aliging, makes can suitably point to photovoltaic band 103A from the light of concentrator 101A.
In various manufacturing process, due to the deviation of manufacturing, concentrator element 101 may not exclusively be alignd, or interval equably.For example, concentrator element 101 for example, is comprised of the structural glass material that comprises a plurality of concentrator bands (, concentrator 101A and 101B).Normally, be easy to by regulating arrangement and/or the layout of photovoltaic band to aim at concentrator and photovoltaic band.For example, photovoltaic band 103A and 103B can the position based on concentrator 101A and 101B move more closely or further separated.For example, photovoltaic band 103A and 103B include the conductive region at their edges.
Normally, concentrator element 101 has large area, and is single chip architecture.On the other hand, photovoltaic module is less sheet.For example, the photovoltaic module shown in Fig. 1 100 comprises the integrated concentrator element 101 of a slice and the photovoltaic bag 103 being combined by many photovoltaic modulies.
Fig. 3 A is the reduced graph illustrating according to the photovoltaic module of the utility model execution mode.This diagram is only example, should too not limit scope of the present utility model.Person of skill in the art will appreciate that many variations, replacement and modification.For example, photovoltaic module 301 and 311 is parts of large photovoltaic bag.Photovoltaic module 301 comprises the photovoltaic band (for example, band 303A, 303B and 303C etc.) being coupled to each other by bus 302A, 302B and 302C.Similarly, photovoltaic module 311 comprises the photovoltaic band (for example, being with 313A, 313B etc.) coupling by bus 312A, 312B and 312C.For example, bus comprises electric conducting material (for example, metal material).Should be appreciated that, the photovoltaic band of conventionally being made by silicon-type material is often frangible.Therefore manufacture the photovoltaic bag that then less photovoltaic module 301 and 311 is joined together to form.In order to connect photovoltaic module 301 and 311, connect bus.For example, bus 302A, 302B and 302C are connected to respectively bus 312A, 312B and 312C.In execution mode, the aligning of the distance between when assembly 301 and 311 connects based on concentrator member.
During generally including the manufacture process of using one or more assembly line, expectation guarantees that photovoltaic module (for example, photovoltaic module 301 and 302) is on assembly system.Should be appreciated that, in the various embodiments of the utility model, system is set to guarantee for the manufacture of, storage, transmission and other photovoltaic module.
Each photovoltaic band shown in Fig. 3 A comprises photovoltaic region and conductive region.Fig. 3 B is the reduced graph illustrating according to the photovoltaic band of the utility model execution mode.This diagram is only example, should too not limit scope of the present utility model.Person of skill in the art will appreciate that many variations, replacement and revise.For example, photovoltaic band 303A is a part for the photovoltaic module 301 shown in Fig. 3 A.Photovoltaic band 303A comprises photovoltaic region 351.For example, photovoltaic region 351 is substantially by forming such as single crystal silicon material, polycrystalline silicon material, film based on photovoltaic material or other photovoltaic material.In each execution mode, photovoltaic region 351 comprises the metal material such as aluminum that makes photovoltaic region 351 conductions.Photovoltaic band 303A also comprises conductive region 350A, 352A and 353A.For example, conductive region electric coupling is called the bus structures of conduction " bus (bus bar) " (303A provides to the electrical connection of other photovoltaic band for photovoltaic band) sometimes.For example, (for example spread all over photovoltaic region, photovoltaic region 351) this application, although conduction, but be called " photovoltaic region ", and for example, distinguish with " conductive region " (, conductive region 350A, 352A and the 353A) of presumptive area that relates to the photovoltaic band of the bus that comprises electric conducting material and electric coupling solar energy module.As shown in Figure 3A, photovoltaic band 303A electric coupling bus 302A, 302B and 302C.More specifically, bus 302A, 302B and 302C are coupled to respectively conductive region 350A, 352A and 353A.Rely on the utility model, conductive region can comprise one or more electric conducting materials.For example, electric conducting material can comprise the material of aluminium, silver, copper and/or other type.In each execution mode, the width of conductive region is about 2~3mm.
In each execution mode, by deposits conductive material on a photovoltaic material, form conductive region.Fig. 4 is the reduced graph illustrating according to the technique that is used to form conductive region of the utility model execution mode.This diagram is only example, should too not limit scope of the present utility model.Person of skill in the art will appreciate that many variations, replacement and modification.As shown in Figure 4, the photovoltaic material 400 of processing comprises a photovoltaic region 404 and conductive region 402A, 402B and 402C.As above explanation, photovoltaic region 404 can comprise such as single crystal silicon material, polycrystalline silicon material, film based on photovoltaic material and/or other various types of photovoltaic materials.
Conductive region 402A, 402B and 402C are arranged on the back side in photovoltaic region 404.For example, on the back side in photovoltaic region 404, conductive region does not stop photovoltaic region clustering light.Conductive region can be to form on photovoltaic region such as printing, deposition and other variety of way.The position of conductive region 402A, 402B and 402C is based on preposition and aligning.Conductive region can comprise one or more electric conducting materials, for example the material of aluminium, silver, copper and/or other type.For example, in order to form photovoltaic band (, photovoltaic band 303A), photovoltaic material 400 is cut into piece by level as shown in Figure 4, wherein with 303A, will have the sub-fraction of conductive region.
Fig. 7 A is the reduced graph illustrating according to the conductive region of the utility model execution mode.This diagram is only example, should too not limit scope of the present utility model.Person of skill in the art will appreciate that many variations, replacement and modification.Go out as shown in Figure 7 A, photovoltaic structure 700(partly illustrates) comprise photovoltaic material 703 and conductive region 702.For example, photovoltaic material 703 is cut into piece along the dotted line of 705A-D, and bandwidth can be approximately 3~8mm as shown in the figure.For each the photovoltaic band forming, there are two conductive legs (conductive leg) of extending from the both sides of conductive region 702 between dotted line.For example, for the photovoltaic band forming between dotted line 705A and 705B, conductive region 702 is electrically coupled to conductive legs 701A and 701B.As shown, conductive legs is substantially vertical with respect to conductive region 702. Conductive legs 701A and 701B can be the extensions of conductive region 702.
According to the utility model, conductive legs 701A and 701B can be by forming such as silver, aluminium, copper and/or other various electric conducting materials.For example, the length of leg is approximately 0.5mm and upper to 1mm, but should be appreciated that other leg is also fine from about 0.1mm to 1.5mm.The thickness of leg can be from about 50 μ m to 150 μ m.Except other side, even comprising near conductive region 702 in defect or the out-of-alignment situation of conductive region 702 at electric conducting material 703, the leg extending from conductive region helps conductive region to be connected to electric conducting material 703.For example, conductive legs is than the relatively more region of the independent covering of conductive region.
Conductive legs 701A and 702B can form in every way.In some embodiments, partly on conductive region 702 and partly printing or deposition on electric conducting material 703 of conductive legs 701A and 701B.In specific implementations, the about 0.3mm of the overlapping conductive region 702 of conductive legs 701A and 702B.For example, the conductive region 702 that is connected to conductive legs is similar to " centipede " structure.Should be appreciated that, conductive legs 701A and 702B also can otherwise form, for example, as the integral part of conductive region 702.As shown in Figure 7 A, conductive legs electric coupling conductive region, and the photovoltaic band that is respectively each formation provides photovoltaic region.
As Fig. 7 B and Fig. 7 C illustrate, conductive legs provides many advantages.Fig. 7 B and Fig. 7 C are the reduced graphs illustrating according to the benefit of the conductive legs of the utility model execution mode.This diagram only provides example, should too not limit scope of the present utility model.Person of skill in the art will appreciate that many variations, replacement and modification.Go out as shown in Figure 7 B, conductive region is misalignment photovoltaic material on region 720.Fortunately, conductive legs bridge gap, and form and be electrically connected between conductive region and photovoltaic material.There is no conductive legs, if also had more so, conductive region and photovoltaic material may not have suitable electrically contacting each other.
Referring now to Fig. 7 C.On region 730, conductive region does not form good contacting with near photovoltaic region, because have obvious gap between conductive region and photovoltaic region.For example, the result such as a variety of causes of the misalignment of conductive region, the parcel of photovoltaic material (thereby causing the misalignment between photovoltaic material and conductive region) and/or other etc. forms gap.Again, as shown in Figure 7 B, around region 730, the gap between conductive legs bridge joint conductive region and photovoltaic region.For example, conductive legs forms electrically contacting between conductive region and photovoltaic material.
Fig. 8 is the reduced graph illustrating according to the photovoltaic band of the utility model execution mode.This diagram is only example, should be in this undue restriction scope of the present utility model.Person of skill in the art will appreciate that other changes, revises and replaces.Should be appreciated that, Fig. 8 does not draw in proportion.As shown in Figure 8, photovoltaic band 800 comprises photovoltaic region 804 and conductive region 801,802 and 803.For example, photovoltaic band 800 is similar to the photovoltaic band 303A shown in Fig. 3 B.Difference between photovoltaic band 800 and photovoltaic band 303A is from conductive region 801,802 and 803 conductive legs of extending.As mentioned above, conductive legs is guaranteed suitable being electrically connected between conductive region and photovoltaic region.
It should be understood that the electrical connection having formed except helping, conductive legs can also help to reduce the size of conductive region.In each execution mode, the width of conductive region does not have conductive legs from about 3mm() be decreased to be less than 2.5mm(and there is conductive legs).The width that conductive region reduces can improve the energy conversion efficiency in photovoltaic region.
Fig. 9 A and Fig. 9 B are the diagrams illustrating according to the benefit providing by conductive legs of the utility model execution mode.This diagram is only example, should be in this undue restriction scope of the present utility model.Person of skill in the art will appreciate that other changes, revises and replaces.As shown in Figure 9 A, there is no conductive legs, some the photovoltaic bands (part with blackening region) in solar energy module are not suitably coupled to bus, result, and these photovoltaic bands suitably do not work, thereby have reduced solar energy module overall performance.By contrast, the solar energy module in Fig. 9 B illustrates does not substantially have blackening region, this means that photovoltaic band and the bus in this solar energy module has good electrically contacting.For example, empirical data is illustrated in aluminium printing on the intentional mobile photovoltaic region test away from conductive region 600um, and conductive legs provides being electrically connected between conductive bus and photovoltaic region.Can know, " centipede (centipede) " structure (, couple the conductive region of conductive legs, be sometimes called " fish-bone " or " caterpillar " structure) from 15.59%(STD bus) improve battery efficiency and to 15.65%(, there is the centipede bus of conductive legs), efficiency gain about 3~4%.Therefore, as mentioned above, " centipede " structure also can prevent that defective photovoltaic region from electromotive force loss occurring.Conductive legs has also improved other tolerance being associated with solar panel.
Although be the complete description of embodiment of the present utility model above, description above should in no way limit scope of the present utility model.

Claims (6)

1. a solar panel, comprising:
Bonnet member;
Protecgulum member, comprises a plurality of concentrator element;
Photovoltaic module, between described protecgulum member and described bonnet member, described photovoltaic module has a plurality of photovoltaic bands, aim at respectively described a plurality of concentrator element, described photovoltaic band has front and back, described photovoltaic band is comprised of photovoltaic material, and described in each, photovoltaic band at least has conductive region on its back side, and the conductive legs at least with conductive region and described photovoltaic material described in electric coupling; And
One or more buses, are electrically coupled to the described conductive region of described photovoltaic band.
2. solar panel according to claim 1, wherein, the described conductive region of described photovoltaic band comprises ag material.
3. solar panel according to claim 1, wherein, for conductive region described in each, each photovoltaic band comprises two described conductive legs.
4. solar panel according to claim 1, wherein, described photovoltaic module is coupled to described bonnet member.
5. solar panel according to claim 1, described protecgulum member comprises glass material.
6. solar panel according to claim 1, also comprises the transparent polymer material between described bonnet member and described protecgulum member.
CN201220731146.XU 2012-12-26 2012-12-26 Solar cell panel Expired - Fee Related CN203445139U (en)

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