CN109904262A - Solar module - Google Patents
Solar module Download PDFInfo
- Publication number
- CN109904262A CN109904262A CN201910147408.4A CN201910147408A CN109904262A CN 109904262 A CN109904262 A CN 109904262A CN 201910147408 A CN201910147408 A CN 201910147408A CN 109904262 A CN109904262 A CN 109904262A
- Authority
- CN
- China
- Prior art keywords
- solar cell
- cell piece
- piece
- back contacts
- solar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 229910052751 metal Inorganic materials 0.000 claims description 48
- 239000002184 metal Substances 0.000 claims description 48
- 239000011888 foil Substances 0.000 claims description 47
- 239000010410 layer Substances 0.000 claims description 36
- 241000446313 Lamella Species 0.000 claims description 26
- 239000012790 adhesive layer Substances 0.000 claims description 8
- 241000826860 Trapezium Species 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 21
- 229910052710 silicon Inorganic materials 0.000 abstract description 21
- 239000010703 silicon Substances 0.000 abstract description 21
- 239000002994 raw material Substances 0.000 abstract description 16
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- 230000005611 electricity Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000554 ionomer Polymers 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical compound C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 239000004446 fluoropolymer coating Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Abstract
This application discloses a kind of solar modules, including rectangular border, multiple solar cell piece groups are arranged in frame, solar cell piece group is rectangle, solar cell piece group includes at least one piece of first solar cell piece and at least one piece of second solar cell piece, first solar cell piece and the second solar cell piece split constitute solar cell piece group, first solar cell piece and the second solar cell piece pass through the acquisition of equal part regular hexagon back contacts solar cell piece, it can be improved the utilization rate of silicon rod raw material, reduce the waste of raw material, reduce production cost, simultaneously, solar cell piece group is rectangle, it is filled up in frame by solar cell piece, compare traditional quadrangle or subquadrate solar cell piece, it does not need that chamfering is arranged in edge, it avoids when conventional chamfer subquadrate cell piece is laid with positioned at the white space of chamfered area Waste.
Description
Technical field
The present invention relates generally to photovoltaic arts, and in particular to solar cell field more particularly to a kind of solar module.
Background technique
Solar cell needs to continue cost efficiency to enhance it as the competitive advantage of alternative energy source.The cost of silicon wafer accounts for
30% or so of all costs of material of solar cell, improve silicon rod silicon material utilization rate can be effectively reduced solar cell at
This.
Mainstream silicon wafer (quadrangle/subquadrate) is cut by cylindrical silicon rod (vertical pulling method is prepared) at present,
More waste material is generated since corner cannot be made full use of, manufactured cell piece area is small (loss effective area is big), on an equal basis
Component power made of the battery sheet packaging of quantity is also relatively low.
Summary of the invention
In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of raising raw material availability and component power
Solar module.
In a first aspect, solar module of the invention, including rectangular border, multiple solar cells are arranged in frame
Piece group, solar cell piece group are rectangle, and solar cell piece group includes at least one piece of first solar cell piece and at least one piece second
Solar cell piece, the first solar cell piece and the second solar cell piece split constitute solar cell piece group, the first solar cell piece
Pass through equal part regular hexagon back contacts solar cell piece with the second solar cell piece to obtain.
It is logical by the first solar cell piece and the second solar cell piece according to technical solution provided by the embodiments of the present application
It crosses etc. and regular hexagon back contacts solar cell piece to be divided to obtain, and the first solar cell piece and the second solar cell piece split are constituted
Solar cell piece group can be improved the utilization rate of silicon rod raw material relative to traditional quadrangle or subquadrate, reduce raw material
Waste, reduce production cost, meanwhile, solar cell piece group is rectangle, is filled up in frame by solar cell piece, comparison tradition
Quadrangle or subquadrate solar cell piece, do not need edge be arranged chamfering, avoid conventional chamfer subquadrate
Positioned at the waste of the white space of chamfered area when cell piece is laid with, light-receiving area, the component of solar module can be improved
Power and generating efficiency are able to solve the low problem of existing solar cell piece raw material availability.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Fig. 7 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Fig. 8 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Fig. 9 is that the back contacts solar cell piece of the solar module of the embodiment of the present invention is that the structure of MWT battery is shown
It is intended to.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 to 7, solar module of the invention, including rectangular border 100 are please referred to, is arranged in frame 100 more
A solar cell piece group 200, solar cell piece group 200 are rectangle, and solar cell piece group 200 includes at least one piece of first sun electricity
Pond piece 210 and at least one piece of second solar cell piece 220,220 split structure of the first solar cell piece 210 and the second solar cell piece
At solar cell piece group 200, the first solar cell piece 210 and the second solar cell piece 220 are connect by equal part regular hexagon back
Solar cell piece is touched to obtain.
In an embodiment of the present invention, the first solar cell piece and the second solar cell piece pass through equal part regular hexagon and carry on the back
It contacts solar cell piece to obtain, and the first solar cell piece and the second solar cell piece split constitute solar cell piece group, phase
For traditional quadrangle or subquadrate, the utilization rate of silicon rod raw material can be improved, reduce the waste of raw material, reduce life
Cost is produced, meanwhile, solar cell piece group is rectangle, is filled up in frame by solar cell piece, and traditional quadrangle or close is compared
Square solar cell piece does not need that chamfering is arranged in edge, avoids position when conventional chamfer subquadrate cell piece is laid with
In the waste of the white space of chamfered area, light-receiving area, component power and the power generation effect of solar module can be improved
Rate.
The figure that first solar cell piece can obtain for quartering regular hexagon, the second solar cell piece can pass through three
Equal part or six equal part regular hexagon back contacts solar cell pieces obtain.It only needs to meet the first solar cell piece and second sun
Cell piece can piece together the solar cell piece group that cross section is rectangle, and solar cell piece group can fill up frame i.e.
It can.The gap between solar cell piece and frame is reduced, the light-receiving area of solar module is improved.
With reference to Fig. 1-3, further, each solar cell piece group 200 includes four piece of first solar cell piece 210 and one piece
Second solar cell piece 220, the first solar cell piece 210 are obtained by quartering regular hexagon back contacts solar cell piece, the
Two solar cell pieces 220 are obtained by trisection regular hexagon back contacts solar cell piece, and the first solar cell piece 210 is right angle
Trapezoidal, the second solar cell piece 220 is diamond shape.
In an embodiment of the present invention, the first solar cell piece is quarter-wave plate regular hexagon back contacts solar cell
Piece, along two orthogonal perpendicular bisectors of regular hexagon back contacts solar cell piece to regular hexagon back contacts solar cell
Piece is cut, and the first solar cell piece is obtained, and the first solar cell piece is right-angled trapezium.
Second solar cell piece is one third piece regular hexagon back contacts solar cell piece, along regular hexagon back contacts
The angular bisector that the mutual angle of three of solar cell piece is 120 ° cuts regular hexagon back contacts solar cell piece
It cuts, obtains the second solar cell piece, the second solar cell piece is diamond shape.
The regular hexagon silicon wafer that regular hexagon back contacts solar cell piece can be cut by cylindrical silicon rod is made, can
The utilization rate for improving silicon rod raw material, reduces the waste of raw material, reduces production cost.
The inclined-plane of four piece of first solar cell piece is adjacent to four inclined-planes of the second solar cell piece respectively, so that four piece
One solar cell piece and the second solar cell piece piece together solar cell piece group, and solar cell piece group is rectangle, on rectangle side
Frame can enable solar cell piece group to be paved with rectangular border, compare along lateral and longitudinal array sun cell piece group
Traditional quadrangle or subquadrate solar cell piece does not need that chamfering is arranged in edge, avoids conventional chamfer closely just
Rectangular cell piece be laid with when positioned at chamfered area white space waste, can be improved solar module light-receiving area,
Component power and generating efficiency.
Further, adjacent four piece of first solar cell piece 210 is in parallel constitutes first unit, and adjacent three piece second too
Positive cell piece 220 is in parallel to constitute second unit, and first unit is connected with second unit.
In an embodiment of the present invention, four piece of first solar cell piece parallel connection is first constituted into first unit and three piece second
Solar cell piece parallel connection constitutes second unit, and first unit is being connected with second unit, first sun in single first unit
The sum of light-receiving area of cell piece is equal with the sum of the light-receiving area of the second solar cell piece in single second unit, can guarantee
The corresponding electric current of the maximum power point of first unit electric current corresponding with the maximum power point of second unit is identical, can be avoided string
The first unit and second unit of connection generate bucket effect, improve the generating efficiency of solar module.
With reference to Figure 4 and 5, further, each solar cell piece group 200 includes two piece of first solar cell piece 210 and one
The second solar cell piece of block 220, the first solar cell piece 210 are obtained by quartering regular hexagon back contacts solar cell piece,
Second solar cell piece 220 is obtained by six equal part regular hexagon back contacts solar cell pieces, and the first solar cell piece 210 is straight
Angle is trapezoidal, and the second solar cell piece 220 is equilateral triangle or isosceles triangle.
In an embodiment of the present invention, the first solar cell piece is quarter-wave plate regular hexagon back contacts solar cell
Piece, along two orthogonal perpendicular bisectors of regular hexagon back contacts solar cell piece to regular hexagon back contacts solar cell
Piece is cut, and the first solar cell piece is obtained, and the first solar cell piece is right-angled trapezium.
Second solar cell piece is one third piece regular hexagon back contacts solar cell piece, along regular hexagon back contacts
The angular bisector that the mutual angle of three of solar cell piece is 120 ° cuts regular hexagon back contacts solar cell piece
It cuts and obtains diamond-shaped solar cell piece, cut with reference to Fig. 4, then by diamond-shaped solar cell piece along longer diagonal line, obtained
Cross section is the second solar cell piece of isosceles triangle, with reference to Fig. 5, by diamond-shaped solar cell piece along shorter diagonal line into
Row cutting obtains the second solar cell piece that cross section is equilateral triangle.Though the second solar cell piece be equilateral triangle or
Isosceles triangle can constitute the solar cell piece group that cross section is rectangle with the first solar cell piece split.
The regular hexagon silicon wafer that regular hexagon back contacts solar cell piece can be cut by cylindrical silicon rod is made, can
The utilization rate for improving silicon rod raw material, reduces the waste of raw material, reduces production cost.
With reference to Fig. 6, further, each solar cell piece group 200 includes one piece of first solar cell piece 210 and one piece the
Two solar cell pieces 220, the first solar cell piece 210 are obtained by quartering regular hexagon back contacts solar cell piece, and second
Solar cell piece 220 is halved regular hexagon back contacts solar cell piece by ten and is obtained, and the first solar cell piece 210 is right angle
Trapezoidal, the second solar cell piece 220 is right angled triangle.
In an embodiment of the present invention, the first solar cell piece is quarter-wave plate regular hexagon back contacts solar cell
Piece, along two orthogonal perpendicular bisectors of regular hexagon back contacts solar cell piece to regular hexagon back contacts solar cell
Piece is cut, and the first solar cell piece is obtained, and the first solar cell piece is right-angled trapezium.
Second solar cell piece is ten half piece regular hexagon back contacts solar cell pieces, is connect along regular hexagon back
Each angular bisector and Ge Bian middle line for touching solar cell piece carry out cutting to regular hexagon back contacts solar cell piece and obtain second
Solar cell piece, the second solar cell piece are right angled triangle.
The regular hexagon silicon wafer that regular hexagon back contacts solar cell piece can be cut by cylindrical silicon rod is made, can
The utilization rate for improving silicon rod raw material, reduces the waste of raw material, reduces production cost.
With reference to Fig. 7, further, each solar cell piece group 200 includes one piece of first solar cell piece 210 and one piece the
Two solar cell pieces 220, the first solar cell piece 210 are halved regular hexagon back contacts solar cell piece by ten and are obtained, the
Two solar cell pieces 220 are halved regular hexagon back contacts solar cell piece by ten and are obtained, and the first solar cell piece 210 is straight
Angle triangle, the second solar cell piece 220 are right angled triangle.
In an embodiment of the present invention, the first solar cell piece is ten half piece regular hexagon back contacts solar cells
Piece, along each angular bisector and Ge Bian middle line of regular hexagon back contacts solar cell piece to regular hexagon back contacts solar cell
Piece carries out cutting and obtains the first solar cell piece, and the first solar cell piece is right angled triangle.
Second solar cell piece is ten half piece regular hexagon back contacts solar cell pieces, is connect along regular hexagon back
Each angular bisector and Ge Bian middle line for touching solar cell piece carry out cutting to regular hexagon back contacts solar cell piece and obtain second
Solar cell piece, the second solar cell piece are right angled triangle.
The regular hexagon silicon wafer that regular hexagon back contacts solar cell piece can be cut by cylindrical silicon rod is made, can
The utilization rate for improving silicon rod raw material, reduces the waste of raw material, reduces production cost.
Further, the first solar cell piece 210 and the second solar cell piece 220 in each solar cell piece group 200
Parallel connection constitutes solar cell piece group 200, and adjacent solar cell piece group 200 is serially connected.
In an embodiment of the present invention, the first solar cell piece in solar cell piece group and the second solar cell piece are in parallel
Solar cell piece group is constituted, adjacent solar cell piece group is serially connected, the sum of light-receiving area of each solar cell piece group phase
Deng can guarantee that the corresponding electric current of maximum power point of each solar cell piece group is identical, can be avoided concatenated solar cell
Piece group generates bucket effect, improves the generating efficiency of solar module.
The series connection and parallel connection that solar cell piece can be successively carried out along the long side or broadside of frame, can reduce
The difficulty of processing of solar module improves the processing efficiency of solar module.
With reference to Fig. 8 and 9, further, solar cell piece group 200 constitutes battery lamella 30, and the back side of battery lamella 30 is solid
Surely it is connected with insulating layer 40, insulating layer 40 is fixedly connected with several conductive metal foil circuits 50 backwards to the side of battery lamella 30,
Gap is provided between adjacent conductive metal foil circuit 50, solar cell piece group 200 is electrically connected by conductive metal foil circuit 50
It connects, conductive metal foil circuit 50 is bonded with polymer backboard 70 by adhesive layer 60 backwards to the side of battery lamella 30.
In an embodiment of the present invention, the back side of battery lamella is fixedly connected with insulating layer, in this application, battery lamella
Front refer to that the light-receiving surface of solar cell, light-receiving surface refer to the one side of the solar cell face sun, the back side of battery lamella
Refer to that the shady face of solar cell, shady face refer to that solar cell back to the one side of the sun, is fixed at the back side of battery lamella
Insulating layer is connected, can be avoided insulating layer influences battery lamella progress daylighting, ensure that the photoelectric conversion effect of solar module
Rate.
Insulating layer is fixedly connected with several conductive metal foil circuits backwards to the side of battery lamella, and conductive metal foil circuit is logical
Electric connector is crossed to be electrically connected with the realization of the electrode of battery lamella.To need two of concatenated two pieces of back contacts solar cell pieces not
Same electrode is electrically connected with the same conductive metal foil circuit, specifically, by the anode of one of back contacts solar cell piece
And the cathode of another piece of back contacts solar cell piece is electrically connected with the same conductive metal foil circuit, by one of back contacts
The anode of the cathode of solar cell piece and another piece of back contacts solar cell piece is electrically connected with the same conductive metal foil circuit.
Two identical electrodes of two pieces of back contacts solar cell pieces in parallel will be needed to be electrically connected with the same conductive metal foil circuit,
Specifically, by positive and another piece of back contacts solar cell piece of one of back contacts solar cell piece anode with it is same
A conductive metal foil circuit electrical connection, by the cathode of one of back contacts solar cell piece and another block of back contacts sun electricity
The cathode of pond piece is electrically connected with the same conductive metal foil circuit.Anode and the cathode difference of same back contacts solar cell piece
It is electrically connected disjunct conductive metal foil circuit, and is provided with gap between adjacent conductive metal foil circuit, is avoided
Solar cell piece short circuit.It does not need to connect back contacts solar cell piece by way of welding welds, avoids the back contacts sun
There is bending arculae in cell piece, reduces the fragment rate of solar cell piece.
Solar cell piece is electrically connected by conductive metal foil circuit, is drawn the electrode of solar cell piece by electric connector
Out, the in series or in parallel of solar cell piece is then realized by conductive metal foil circuit, avoids back contacts solar cell piece
Short circuit is generated, insulating layer can prevent adjacent electric connector to be electrically connected, improve the incident photon-to-electron conversion efficiency of solar cell piece, mention
The high reliability of back contacts solar modules.
Conductive metal foil circuit is bonded with polymer backboard by adhesive layer backwards to the side of battery lamella, passes through adhesive layer
Conductive metal foil circuit and polymer backboard are adhesively fixed, convenient for being fixed and patterning to conductive metal foil
Processing forms conductive metal foil circuit, improves processing efficiency and processing accuracy.
Back contacts solar cell piece can be with but not just for IBC solar cell, MWT solar cell, EWT solar cell.Back
The light-receiving surface of contact solar cell piece, which can be electrodeless structure, (has main grid structure and back using IBC battery structure, including the back side
Face dereliction grid structure), it is also possible to thin gate electrode structure (using MWT battery structure).Back contacts solar cell piece uses N-type silicon
Substrate or P-type silicon substrate.
The material of polymer backboard can be with but not just for TPT, TPE, KPE, KPK, KPC or KPF.Polymer backboard can also
It is made of totally new kind of material, it may include the several layers and adhesive layer that are made of insulating materials (such as PET or PP) contain
The polymeric multilayer structure that fluoropolymer coating is combined, thickness and cost can be greatly reduced, and be electrically insulated it is excellent,
Weatherability can also be guaranteed.
The material of conductive metal foil circuit is copper, silver, aluminium, nickel, magnesium, iron, titanium, molybdenum, any one in tungsten or a variety of
Combination, the material of conductive metal foil circuit be copper, silver, aluminium, nickel, magnesium, iron, titanium, molybdenum, any one in tungsten alloy or a variety of
The alloy of formation.
Electric connector is conductor, and the material of electric connector can be with but not just for electrocondution slurry, solder, soldering paste, conductive ink
Water, isotropic conductive adhesive, anisotropy conductiving glue, bulk or cylindrical metal, bulk or cylindrical metal alloy.Electrical connection
Body can be formed by silk-screen printing or mode for dispensing glue, and the material of electric connector can be with but not just for soldering paste or with sheet
Silver powder is conductive fill phase, the conducting resinl based on epoxy resin and/or acrylic resin.
Further, battery lamella 30 is fixedly connected with preceding encapsulated layer 20, preceding encapsulated layer 20 backwards to the side of insulating layer 40
Front shroud 10 is fixedly connected with backwards to the side of battery lamella 30.
In an embodiment of the present invention, the material of preceding encapsulated layer can (ethene-vinyl acetate be copolymerized with but not just for EVA
Object), PVB (polyvinyl butyral), POE (thermoplasticity and/or thermosetting polyolefin) or Ionomer (polyethylene-acetic acid esters
Ionomer).The material of preceding encapsulated layer is EVA, carries out encapsulated layer before obtaining under the conditions of 147 DEG C lamination 10 minutes.Front cover
Plate can with but not just for embossing tempered glass, the thickness 3.2mm of front shroud.
Further, insulating layer 40 has been positioned apart from several openings 42, and electric connector 41 passes through opening 42.
In an embodiment of the present invention, insulating layer has been positioned apart from several openings, and electric connector passes through opening, Neng Goubao
Card electric connector is electrically connected with the electrode of conductive metal foil circuit and back contacts solar cell piece respectively, and insulating layer is avoided to hinder
Electric connector is electrically connected with the electrode of conductive metal foil circuit and back contacts solar cell piece respectively, improves the back contacts sun
The yields of battery component.Meanwhile it also can reduce the difficulty of processing of back contacts solar module.
Further, 42 shape of being open is round or rectangular.
In an embodiment of the present invention, the shape of opening is round perhaps rectangular easy to process or forms opening, is reduced
The difficulty of processing of back contacts solar module improves the processing efficiency of back contacts solar module.
Further, 42 quantity of opening are 100-50000 or 5000-2000000 or 100-10000.
In an embodiment of the present invention, when back contacts solar cell piece is that the back side has main grid IBC battery, open amount is
100-50000；When back contacts solar cell piece be the back side without main grid IBC battery when, open amount is 5000-2000000；
When back contacts solar cell piece is MWT battery, open amount is 100-10000.
Further, thickness≤500 micron of insulating layer 40, the thickness G T.GT.GT 0 of insulating layer, adhesive layer with a thickness of 10-500
Micron.
In an embodiment of the present invention, adhesive layer can be with but not just for EVA adhesive film, POE glue film or PVB film, adhesive layer
With a thickness of 10-500 microns.Thickness≤500 micron of insulating layer, the thickness G T.GT.GT 0 of insulating layer, insulating layer become with certain heat resistanceheat resistant
Shape ability so that insulating layer deformed in lamination process it is smaller, convenient for back contacts solar cell piece electrode and electric connector pair
Standard improves the processing accuracy of back contacts solar module, improves yields.Meanwhile it also can be avoided insulating layer mistake
Thickness reduces manufacturing cost.
Further, insulating layer 40 with a thickness of 50-200 microns.
In an embodiment of the present invention, insulating layer with a thickness of 50-200 microns, insulating layer has certain thermal deformation resistant energy
Power, so that insulating layer deforms smaller in lamination process, the electrode convenient for back contacts solar cell piece is aligned with electric connector, is mentioned
The high processing accuracy of back contacts solar modules, improves yields.Meanwhile it is blocked up also to can be avoided insulating layer, drop
Low manufacturing cost.
Further, the material of conductive metal foil circuit 50 is copper foil or aluminium foil, the thickness of conductive metal foil circuit 50
It is 10-100 microns.
In an embodiment of the present invention, the material of conductive metal foil circuit is copper foil or aluminium foil, conductive metal foil circuit
With a thickness of 10-100 microns, conductive metal foil circuit is capable of providing low-resistance current path, and ensure that conductive metal
Foil circuit will not be too thick, under the premise of ensure that the electric conductivity of conductive metal foil circuit, avoids back contacts solar panel
The manufacturing cost of part is excessively high.
Further, conductive metal foil circuit 50 with a thickness of 10-500 microns.
In an embodiment of the present invention, conductive metal foil circuit with a thickness of 10-500 microns, conductive metal foil circuit energy
Low-resistance current path is enough provided, and ensure that conductive metal foil circuit will not be too thick, ensure that conductive metal foil electricity
Under the premise of the electric conductivity on road, avoid the manufacturing cost of back contacts solar module excessively high.
Further, the conductive metal foil circuit 50 positioned at 30 edge of battery lamella exposes 30 edge of battery lamella.
In an embodiment of the present invention, when the light-receiving area of each back contacts solar cell piece is identical, it is only necessary to by each back
Contact solar cell piece is connected, and is not needed so that conductive metal foil circuit exposes battery lamella edge.When each back contacts too
When the light-receiving area difference of positive cell piece, in order to avoid wooden pail effect, need the back contacts solar cell piece by small area advanced
Row is in parallel, then connects with the back contacts solar cell piece of large area, can will be located at the conductive metal foil circuit at battery layers edge
Expose battery lamella edge, conductive metal foil circuit exposes the part at battery lamella edge for designing connection circuit, convenient for small
Circuit connection is carried out between the back contacts solar cell piece of area, improves the processing efficiency of back contacts solar module.
Further, back contacts solar cell piece 31 is provided with just superfine grid line, the thin grid line of cathode, p-type doping region and n
Type doped region, just superfine grid line are contacted with p-type doping region, and the thin grid line of cathode is contacted with n-type doping region, just superfine grid line
It is electrically connected respectively with electric connector with the thin grid line of cathode, the just superfine grid line and cathode on any back contacts solar cell piece 31 are thin
The sum of quantity of grid line is 50-1000 root, the electric connector being electrically connected with any just superfine grid line or the thin grid line of cathode
Quantity is 1-100.
In an embodiment of the present invention, when back contacts solar cell piece be the back side without main grid IBC battery when, the back contacts sun
Cell piece is provided with just superfine grid line, the thin grid line of cathode, p-type doping region and n-type doping region, and just superfine grid line is mixed with p-type
Miscellaneous region contact, the thin grid line of cathode are contacted with n-type doping region, and just superfine grid line and the thin grid line of cathode are electric with electric connector respectively
Connection, passes through just superfine grid line and the thin grid line derived current of cathode.The just superfine grid line of any back contacts solar cell on piece with
The sum of quantity of the thin grid line of cathode is 50-1000 root, is electrically connected with what any just superfine grid line or the thin grid line of cathode were electrically connected
The quantity of junctor is 1-100.
Further, back contacts solar cell piece 31 is provided with just superfine grid line, the thin grid line of cathode, p-type doping region and n
Type doped region, just superfine grid line are contacted with p-type doping region, and the thin grid line of cathode is contacted with n-type doping region, just superfine grid line
It is electrically connected with positive connection electrode, the thin grid line of cathode is electrically connected with cathode connection electrode, and positive connection electrode connects electricity with cathode
Pole is electrically connected with electric connector respectively, the positive connection electrode and cathode connection electrode on any back contacts solar cell piece 31
The sum of quantity is 2-100 root, the quantity for the electric connector being electrically connected with any positive connection electrode or cathode connection electrode
It is 1-100.
In an embodiment of the present invention, when back contacts solar cell piece is that the back side has main grid IBC battery, the back contacts sun
Cell piece is provided with just superfine grid line, the thin grid line of cathode, p-type doping region and n-type doping region, and just superfine grid line is mixed with p-type
Miscellaneous region contact, the thin grid line of cathode are contacted with n-type doping region, and just superfine grid line is electrically connected with positive connection electrode, and cathode is thin
Grid line is electrically connected with cathode connection electrode, and positive connection electrode and cathode connection electrode are electrically connected with electric connector respectively, is passed through
Positive connection electrode and cathode connection electrode derived current.The positive connection electrode and cathode of any back contacts solar cell on piece
The sum of quantity of connection electrode is 2-100 root, is electrically connected with what any positive connection electrode or cathode connection electrode were electrically connected
The quantity of junctor is 1-100.
With reference to Fig. 9, further, back contacts solar cell piece 31 is provided with first electrode 32 and second electrode 36, and first
Electrode 32 includes thin gate electrode 33, runs through pore electrod 34 and the first connection electrode 35, thin gate electrode 33 and the first connection electrode 35
It is electrically connected respectively with through pore electrod 34, second electrode 36 includes transmission electrode 37 and the second connection electrode 38, transmission electrode 37
It is electrically connected with the second connection electrode 38, the front of back contacts solar cell piece 31 is provided with thin gate electrode 33, back contacts sun electricity
The back side of pond piece 31 is provided with the first connection electrode 35, transmission electrode 37 and the second connection electrode 38, any back contacts sun
The sum of quantity of the first connection electrode 35 and the second connection electrode 38 on cell piece 31 is 100-10000.
In an embodiment of the present invention, when back contacts solar cell piece is MWT battery, the setting of back contacts solar cell piece
Have a first electrode and second electrode, first electrode includes thin gate electrode, through pore electrod and the first connection electrode, thin gate electrode and
First connection electrode is electrically connected with through pore electrod respectively, and second electrode includes transmission electrode and the second connection electrode, transmission electricity
Pole is electrically connected with the second connection electrode, and the front of back contacts solar cell piece is provided with thin gate electrode, back contacts solar cell piece
The back side be provided with the first connection electrode, transmission electrode and the second connection electrode, the of any back contacts solar cell on piece
The sum of quantity of one connection electrode and the second connection electrode is 100-10000.
Further, the first connection electrode 35 and the second connection electrode 38 are in that lattice-like is arranged in back contacts solar cell piece
31 back side.
Further, the diameter of the first connection electrode 35 is 0.3-10mm, and the diameter of the second connection electrode 38 is 0.3-
10mm。
Further, each solar cell piece group is electrically connected by busbar or conducting wire.
In an embodiment of the present invention, each solar cell piece group can also be electrically connected by busbar or conducting wire, can
Circuit is reduced to the area occupied of conductive metal foil, to reduce the area of conductive metal foil.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (10)
1. a kind of solar module, which is characterized in that including rectangular border, multiple solar cells are arranged in the frame
Piece group, the solar cell piece group are rectangle, and the solar cell piece group is including at least one piece of first solar cell piece and at least
One piece of second solar cell piece, first solar cell piece and the second solar cell piece split constitute the solar cell
Piece group, first solar cell piece and second solar cell piece pass through equal part regular hexagon back contacts solar cell piece
It obtains.
2. solar module according to claim 1, which is characterized in that each solar cell piece group includes four pieces
First solar cell piece and one piece of second solar cell piece, first solar cell piece pass through described in the quartering just
Hexagon back contacts solar cell piece obtains, and second solar cell piece passes through the regular hexagon back contacts sun described in trisection
Cell piece obtains, and first solar cell piece is right-angled trapezium, and second solar cell piece is diamond shape.
3. solar module according to claim 2, which is characterized in that first solar cell piece of adjacent four pieces
Parallel connection constitutes first unit, and the second solar cell piece parallel connection of adjacent three pieces constitutes second unit, the first unit with
The second unit series connection.
4. solar module according to claim 1, which is characterized in that each solar cell piece group includes two pieces
First solar cell piece and one piece of second solar cell piece, first solar cell piece pass through described in the quartering just
Hexagon back contacts solar cell piece obtains, and second solar cell piece passes through the regular hexagon back contacts sun described in six equal parts
Cell piece obtains, and first solar cell piece is right-angled trapezium, and second solar cell piece is equilateral triangle or isosceles
Triangle.
5. solar module according to claim 1, which is characterized in that each solar cell piece group includes one piece
First solar cell piece and one piece of second solar cell piece, first solar cell piece pass through described in the quartering just
Hexagon back contacts solar cell piece obtains, and second solar cell piece halves the regular hexagon back contacts too by ten
Positive cell piece obtains, and first solar cell piece is right-angled trapezium, and second solar cell piece is right angled triangle.
6. solar module according to claim 1, which is characterized in that each solar cell piece group includes one piece
First solar cell piece and one piece of second solar cell piece, first solar cell piece pass through described in ten bisections
Regular hexagon back contacts solar cell piece obtains, and second solar cell piece halves the regular hexagon back contacts by ten
Solar cell piece obtains, and first solar cell piece is right angled triangle, and second solar cell piece is right angled triangle.
7. according to solar module described in claim 2 or 4 or 5 or 6, which is characterized in that each solar cell piece
The first solar cell piece in group and the second solar cell piece parallel connection constitute the solar cell piece group, it is adjacent it is described too
Positive cell piece group is serially connected.
8. solar module according to claim 1, which is characterized in that the solar cell piece group constitutes cell piece
Layer, the back side of the battery lamella are fixedly connected with insulating layer, and the insulating layer is backwards to the fixed company in the side of the battery lamella
Several conductive metal foil circuits are connected to, gap, each solar cell are provided between the adjacent conductive metal foil circuit
Piece group is electrically connected by the conductive metal foil circuit, and the conductive metal foil circuit passes through backwards to the side of the battery lamella
Adhesive layer is bonded with polymer backboard.
9. solar module according to claim 8, which is characterized in that the battery lamella is backwards to the insulating layer
Side is fixedly connected with preceding encapsulated layer, and the preceding encapsulated layer is fixedly connected with front shroud backwards to the side of the battery lamella.
10. solar module according to claim 8, which is characterized in that described in the battery lamella edge
Conductive metal foil circuit exposes the battery lamella edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910147408.4A CN109904262A (en) | 2019-02-27 | 2019-02-27 | Solar module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910147408.4A CN109904262A (en) | 2019-02-27 | 2019-02-27 | Solar module |
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| Publication Number | Publication Date |
|---|---|
| CN109904262A true CN109904262A (en) | 2019-06-18 |
Family
ID=66945760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910147408.4A Pending CN109904262A (en) | 2019-02-27 | 2019-02-27 | Solar module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114141907A (en) * | 2021-11-23 | 2022-03-04 | 中国电子科技集团公司第十八研究所 | Sheet distribution method for battery array |
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| CN203277409U (en) * | 2013-05-21 | 2013-11-06 | 江苏爱多光伏科技有限公司 | Triangular solar cell |
| CN107123696A (en) * | 2017-06-09 | 2017-09-01 | 崔鹏 | A kind of photovoltaic solar cell piece component |
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