CN109904263A - solar cell module - Google Patents
solar cell module Download PDFInfo
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- CN109904263A CN109904263A CN201910147409.9A CN201910147409A CN109904263A CN 109904263 A CN109904263 A CN 109904263A CN 201910147409 A CN201910147409 A CN 201910147409A CN 109904263 A CN109904263 A CN 109904263A
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- Prior art keywords
- solar cell
- cell piece
- piece
- back contacts
- regular hexagon
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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
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Abstract
本申请公开了一种太阳电池组件，包括长方形边框，边框内排列有多个串联的第一太阳电池片组，第一太阳电池片组为正六边形，第一太阳电池片组包括至少一块第一太阳电池片，还包括多个串联的第二太阳电池片组，第二太阳电池片组用于填补第一电池片组与边框之间的间隙，第二太阳电池片组包括至少两块第二太阳电池片，第二太阳电池片组内的第二太阳电池片并联构成第二太阳电池片组，单个第一太阳电池片组的面积与单个第二太阳电池片组的面积相等，第一太阳电池片组与第二太阳电池片组串联，能够提高硅棒原料的利用率，减少原料的浪费，降低了生产成本。
The present application discloses a solar cell assembly, comprising a rectangular frame, a plurality of first solar cell groups connected in series are arranged in the frame, the first solar cell group is a regular hexagon, and the first solar cell group includes at least one first solar cell group. A solar cell, further comprising a plurality of second solar cell groups connected in series, the second solar cell group is used to fill the gap between the first cell group and the frame, and the second solar cell group includes at least two first solar cell groups Two solar cells, the second solar cell in the second solar cell group is connected in parallel to form a second solar cell group, the area of a single first solar cell group is equal to the area of a single second solar cell group, the first solar cell group The solar cell group is connected in series with the second solar cell group, which can improve the utilization rate of the raw material of the silicon rod, reduce the waste of the raw material, and reduce the production cost.
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), monolithic
Power is relatively low, and component power made of the battery sheet packaging of equivalent amount 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 concatenated are arranged in frame
One solar cell piece group, the first solar cell piece group be regular hexagon, the first solar cell piece group include at least one piece first too
Positive cell piece further includes multiple concatenated second solar cell piece groups, and the second solar cell piece group is for filling up the first cell piece
Gap between group and frame, the second solar cell piece group include at least two piece of second solar cell piece, the second solar cell piece
The second solar cell piece parallel connection in group constitutes the second solar cell piece group, the light-receiving area of single first solar cell piece group with
The light-receiving area of single second solar cell piece group is equal, and the first solar cell piece group is connected with the second solar cell piece group.
According to technical solution provided by the embodiments of the present application, by setting regular hexagon for the first solar cell piece group,
Also, the light-receiving area of the second solar cell piece group is equal with the light-receiving area of the first solar cell piece group, can be by cylinder
The first solar cell piece group and the second solar cell piece group is made in the regular hexagon silicon wafer that silicon rod is cut into, relative to traditional four
Side shape or subquadrate can be improved the utilization rate of silicon rod raw material, reduce the waste of raw material, reduce production cost, meanwhile,
It is able to ascend the silicon wafer light-receiving area of single first solar cell piece group and the second solar cell piece group, improves single first too
The generating efficiency of positive cell piece group and the second solar cell piece group is able to solve existing solar module process Central Plains
The material problem that utilization rate is low, monolithic generating efficiency is low.
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 the structural schematic diagram of the solar module of the embodiment of the present invention；
Figure 10 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Figure 11 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Figure 12 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Figure 13 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Figure 14 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Figure 15 is the structural schematic diagram of the solar module of the embodiment of the present invention；
Figure 16 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 14, solar module of the invention, including rectangular border 100 are please referred to, is arranged in frame 100
Multiple concatenated first solar cell piece groups 200, the first solar cell piece group 200 are regular hexagon, the first solar cell piece group
200 include at least one piece of first solar cell piece 210, further includes multiple concatenated second solar cell piece groups 300, second sun
For filling up the gap between the first cell piece group 200 and frame 100, the second solar cell piece group 300 includes cell piece group 300
At least two piece of second solar cell piece 310, the second solar cell piece 310 in the second solar cell piece group 300 is in parallel to constitute the
Two solar cell piece groups 300, the light-receiving area of single first solar cell piece group 200 and single second solar cell piece group 300
Light-receiving area it is equal, the first solar cell piece group 200 is connected with the second solar cell piece group 300.
In an embodiment of the present invention, it is arranged with multiple concatenated first solar cell piece groups in rectangular border, first
Solar cell piece group is regular hexagon, and the first solar cell piece group includes at least one piece of first solar cell piece.Specifically, first
Solar cell piece group may include one piece of first solar cell piece, and the first solar cell piece is the monolith regular hexagon back contacts sun
Cell piece；First solar cell piece group also may include two piece of first solar cell piece, two piece of first solar cell piece parallel connection structure
At the first solar cell piece group, two piece of first solar cell piece pieces together the first solar cell piece group of regular hexagon, and first too
Positive cell piece is half piece regular hexagon back contacts solar cell piece；First solar cell piece group also may include three piece
One solar cell piece, three piece of first solar cell piece parallel connection constitute the first solar cell piece group, and three piece of first solar cell piece is spelled
The first solar cell piece group of regular hexagon is synthesized, the first solar cell piece is one third piece regular hexagon back contacts sun electricity
Pond piece；First solar cell piece group also may include four piece of first solar cell piece, and four piece of first solar cell piece parallel connection is constituted
First solar cell piece group, four piece of first solar cell piece piece together the first solar cell piece group of regular hexagon, first sun
Cell piece is quarter-wave plate regular hexagon back contacts solar cell piece；First solar cell piece group also may include six piece first
Solar cell piece, six piece of first solar cell piece parallel connection constitute the first solar cell piece group, six piece of first solar cell piece split
At the first solar cell piece group of regular hexagon, the first solar cell piece is six/a piece of regular hexagon back contacts solar cell
Piece；First solar cell piece group also may include 12 piece of first solar cell piece, 12 piece of first solar cell piece parallel connection structure
At the first solar cell piece group, 12 piece of first solar cell piece pieces together the first solar cell piece group of regular hexagon, and first
Solar cell piece is ten half piece regular hexagon back contacts solar cell pieces.
Second solar cell piece group includes at least two piece of second solar cell piece, and the second solar cell piece is half piece
Regular hexagon back contacts solar cell piece, one third piece regular hexagon back contacts solar cell piece, positive six side of quarter-wave plate
Shape back contacts solar cell piece, six/a piece of regular hexagon back contacts solar cell piece, ten half piece regular hexagons back
Any one in solar cell piece is contacted, between the second solar cell piece can be filled up between the first solar cell piece group and frame
Gap, it is, the first solar cell piece group and the second solar cell piece group can piece together a cuboid, also, single
Two solar cell piece groups are equal with the light-receiving area of single first solar cell piece group, it is, guaranteeing the first solar cell piece
The corresponding electric current of maximum power point of group is identical as the corresponding electric current of maximum power point of the second solar cell piece group, can be avoided
Concatenated first solar cell piece group and the second solar cell piece group generate bucket effect, improve the power generation of solar module
Efficiency.
First solar cell piece group and the second solar cell piece group can piece together a cuboid, so that rectangular border
Inside it is covered with solar cell piece, also, the first solar cell piece and the second solar cell piece do not need setting chamfering, avoid biography
Positioned at the waste of the white space of chamfered area when chamfering subquadrate cell piece of uniting is laid with, the first solar cell piece can be improved
The light-receiving area of group and the second solar cell piece group improves single first solar cell piece group and single second sun electricity
The generating efficiency of pond piece group, improves the generating efficiency of solar module.
The arrangement mode of first solar cell piece group can be honeycomb arrangement, can also be along the length of rectangular frame
Side or broadside are arranged successively, and can also be arranged successively along any straight line, between the first solar cell piece group that can also be adjacent
It is provided with the second solar cell piece between arrangement, the first adjacent solar cell piece group, it can also be with irregular disordered arrangements.
As long as can satisfy the first solar cell piece group is regular hexagon, and the second solar cell piece group can fill first sun electricity
Gap between pond piece group and frame, the first solar cell piece group are connected with the second solar cell piece group, single first sun electricity
The pond piece group protection scope for belonging to the application equal with the light-receiving area of single second solar cell piece group.
Further, the first solar cell piece 210 is regular hexagon back contacts solar cell piece,
Second solar cell piece 310 is half piece regular hexagon back contacts solar cell piece, one third piece positive six
Side shape back contacts solar cell piece, quarter-wave plate regular hexagon back contacts solar cell piece, six/a piece of regular hexagon back
Any one in contact solar cell piece, ten half piece regular hexagon back contacts solar cell pieces.
In an embodiment of the present invention, the first solar cell piece is regular hexagon back contacts solar cell piece, second sun
Cell piece is half piece regular hexagon back contacts solar cell piece, one third piece regular hexagon back contacts solar cell
Piece, quarter-wave plate regular hexagon back contacts solar cell piece, six/a piece of regular hexagon back contacts solar cell piece, 12
Any one in/a piece of regular hexagon back contacts solar cell piece, the second solar cell piece in the second solar cell piece group
Parallel connection constitutes the second solar cell piece group and connects again with the first solar cell piece, and the second solar cell piece can fill up first sun
Gap between cell piece group and frame, it is, the first solar cell piece group and the second solar cell piece group can piece together
One cuboid, also, single second solar cell piece group is equal with the light-receiving area of single first solar cell piece group, also
It is to guarantee the corresponding electric current of maximum power point of the first solar cell piece group and the maximum power point pair of the second solar cell piece group
The electric current answered is identical, can be avoided concatenated first solar cell piece group and the second solar cell piece group generates bucket effect, mention
The high generating efficiency of solar module.
With reference to Fig. 1 and 2, the first solar cell piece is regular hexagon back contacts solar cell piece, and the second solar cell piece is
Half piece regular hexagon back contacts solar cell piece, two piece of second solar cell piece parallel connection constitute the second solar cell piece
Group.
With reference to Fig. 3, the first solar cell piece is regular hexagon back contacts solar cell piece, and the second solar cell piece of part is
Half piece regular hexagon back contacts solar cell piece, the second solar cell piece of part are that quarter-wave plate regular hexagon back connects
Solar cell piece is touched, two pieces of half piece regular hexagon back contacts solar cell piece parallel connections can be constituted into the second solar cell
Piece group, can also be by one piece of half piece regular hexagon back contacts solar cell piece, two pieces of quarter-wave plate regular hexagon back
It contacts solar cell piece and carries out second solar cell piece group of composition in parallel.
With reference to Fig. 4-7, the first solar cell piece is half piece regular hexagon back contacts solar cell piece, can be by two
Block the first solar cell piece parallel connection constitutes the first solar cell piece group, and the second solar cell piece is half piece regular hexagon back
Solar cell piece is contacted, two piece of second solar cell piece parallel connection can constitute to the second solar cell piece group, then by first sun
Cell piece group and the series connection of the second solar cell piece group.Certainly, when the first solar cell piece of monolithic and the second solar cell piece of monolithic
Light-receiving area it is equal when, directly the first solar cell piece can be connected with the second solar cell piece.
With reference to Fig. 8-10, the first solar cell piece is one third piece regular hexagon back contacts solar cell piece, three pieces the
One solar cell piece parallel connection constitutes the first solar cell piece group.The second solar cell piece of part is one third piece regular hexagon back
Solar cell piece is contacted, the second solar cell piece of part is quarter-wave plate regular hexagon back contacts solar cell piece, part the
Two solar cell pieces are six/a piece of regular hexagon back contacts solar cell piece, the second solar cell piece of part is 12/
A piece of regular hexagon back contacts solar cell piece, can be in parallel by four pieces of quarter-wave plate regular hexagon back contacts solar cell pieces
The second solar cell piece group is constituted, it can also be by two pieces of one third piece regular hexagon back contacts solar cell pieces and two piece six
The second solar cell piece group of/a piece of regular hexagon back contacts solar cell piece parallel connection composition, can also be by six piece 1/6th
Piece regular hexagon back contacts solar cell piece parallel connection constitutes the second solar cell piece group.
With reference to Figure 11 and 12, the first solar cell piece is quarter-wave plate regular hexagon back contacts solar cell piece, four pieces
First solar cell piece parallel connection constitutes the first solar cell piece group.Second solar cell piece is that quarter-wave plate regular hexagon back connects
Solar cell piece is touched, four piece of second solar cell piece parallel connection constitutes the second solar cell piece group.Certainly, when monolithic first sun electricity
It, can be directly by the first solar cell piece and second sun electricity when pond piece is equal with the light-receiving area of the second solar cell piece of monolithic
The series connection of pond piece.
With reference to Figure 13, the first solar cell piece is six/a piece of regular hexagon back contacts solar cell piece, six piece first
Solar cell piece parallel connection constitutes the first solar cell piece group.Second solar cell piece be six/a piece of regular hexagon back contacts too
Positive cell piece and ten half piece regular hexagon back contacts solar cell pieces.
With reference to Figure 14, the first solar cell piece is monolith regular hexagon back contacts solar cell piece, the second solar cell piece
For one third piece regular hexagon back contacts solar cell piece, six/a piece of regular hexagon back contacts solar cell piece and ten
Half piece regular hexagon back contacts solar cell piece.
Further, the first solar cell piece 210 be half piece regular hexagon back contacts solar cell piece, three/
A piece of regular hexagon back contacts solar cell piece, quarter-wave plate regular hexagon back contacts solar cell piece, six/it is a piece of just
Any one in hexagon back contacts solar cell piece, ten half piece regular hexagon back contacts solar cell pieces, first too
The first solar cell piece parallel connection in positive cell piece group constitutes the first solar cell piece group,
Second solar cell piece 310 is half piece regular hexagon back contacts solar cell piece, one third piece positive six
Side shape back contacts solar cell piece, quarter-wave plate regular hexagon back contacts solar cell piece, six/a piece of regular hexagon back
Any one in contact solar cell piece, ten half piece regular hexagon back contacts solar cell pieces.
In an embodiment of the present invention, the first solar cell piece group also may include two piece of first solar cell piece, and two pieces
First solar cell piece parallel connection constitutes the first solar cell piece group, and two piece of first solar cell piece pieces together the first of regular hexagon
Solar cell piece group, the first solar cell piece are half piece regular hexagon back contacts solar cell piece；First solar cell
Piece group also may include three piece of first solar cell piece, and three piece of first solar cell piece parallel connection constitutes the first solar cell piece group,
Three piece of first solar cell piece pieces together the first solar cell piece group of regular hexagon, and the first solar cell piece is one third piece
Regular hexagon back contacts solar cell piece；First solar cell piece group also may include four piece of first solar cell piece, and four piece
One solar cell piece parallel connection constitutes the first solar cell piece group, and four piece of first solar cell piece pieces together the first of regular hexagon too
Positive cell piece group, the first solar cell piece are quarter-wave plate regular hexagon back contacts solar cell piece；First solar cell piece
Organizing also may include six piece of first solar cell piece, six piece of first solar cell piece parallel connection the first solar cell piece group of composition, and six
The first solar cell piece of block pieces together the first solar cell piece group of regular hexagon, the first solar cell piece is six/it is a piece of just
Hexagon back contacts solar cell piece；First solar cell piece group also may include 12 piece of first solar cell piece, and 12 pieces
First solar cell piece parallel connection constitutes the first solar cell piece group, and 12 piece of first solar cell piece pieces together the of regular hexagon
One solar cell piece group, the first solar cell piece are ten half piece regular hexagon back contacts solar cell pieces, certainly, first
Solar cell piece is also possible in the solar cell piece of different light-receiving areas, such as the first solar cell piece group may include two pieces
Quarter-wave plate regular hexagon back contacts solar cell piece and one piece of half piece regular hexagon back contacts solar cell piece,
Two pieces of quarter-wave plate regular hexagon back contacts solar cell pieces and one block of half piece regular hexagon back contacts sun electricity
Pond piece can piece together the first solar cell piece group of regular hexagon, as long as can piece together multiple first solar cell pieces just
First solar cell piece group of hexagon, no matter the shape of the first solar cell piece and the quantity of the first solar cell piece belong to
In the protection scope of the application.
Second solar cell piece is half piece regular hexagon back contacts solar cell piece, one third piece regular hexagon
Back contacts solar cell piece, quarter-wave plate regular hexagon back contacts solar cell piece, six/a piece of regular hexagon back contacts
Any one in solar cell piece, ten half piece regular hexagon back contacts solar cell pieces, in the second solar cell piece group
The second solar cell piece parallel connection constitute the second solar cell piece group, the second solar cell piece can fill up the first solar cell piece
Gap between group and frame, it is, the first solar cell piece group and the second solar cell piece group can piece together it is one long
Cube, also, single second solar cell piece group is equal with the light-receiving area of single first solar cell piece group, first sun electricity
The first solar cell piece parallel connection in the piece group of pond constitutes the first solar cell piece group, second sun electricity in the second solar panel
Pond piece parallel connection constitutes the second solar cell piece group, and the first solar cell piece group is connected with the second solar cell piece group, it is, protecting
The corresponding electric current of maximum power point for demonstrate,proving the first solar cell piece group is corresponding with the maximum power point of the second solar cell piece group
Electric current is identical, can be avoided concatenated first solar cell piece group and the second solar cell piece group generates bucket effect, improve
The generating efficiency of solar module.
Further, the first adjacent solar cell piece group 200 along frame 100 longitudinal direction or broadside according to
Secondary series connection.
In an embodiment of the present invention, the first adjacent solar cell piece group is sequentially connected in series along the longitudinal direction of frame,
With reference to Fig. 5,7,9,10, back and forth the first adjacent solar cell piece group can be connected along the longitudinal direction of frame, energy
The difficulty of processing for enough reducing solar module, improves the processing efficiency of solar module.
The first adjacent solar cell piece group is sequentially connected in series along the broadside of frame, with reference to Fig. 2,3,12, Ke Yiyan
The longitudinal direction of frame back and forth the first adjacent solar cell piece group is connected, can reduce solar module plus
Work difficulty improves the processing efficiency of solar module.
Wherein, if the first solar cell piece group has, a line is parallel with the long side of frame, can be along the broadside of frame
Back and forth the first adjacent solar cell piece group is connected in direction；If the first solar cell piece group has the broadside of a line and frame
In parallel, back and forth the first adjacent solar cell piece group can be connected along the longitudinal direction of frame.Namely too according to first
The horizontally-arranged perhaps perpendicular column of positive cell piece group carry out in sequential series connect when the first solar cell piece group of a row or a column and complete
Afterwards, just the last one first solar cell piece group and not connected the first adjacent solar cell piece group are attached, until
Complete the series connection of all the first solar cell piece groups.
Further, the second adjacent solar cell piece group 300 series connection.
In an embodiment of the present invention, the second adjacent solar cell piece group series connection, can reduce solar module
Difficulty of processing improves the process velocity and efficiency of solar module.
Further, there are multiple first solar cell piece groups 200 in honeycomb arrangement in frame 100.
In an embodiment of the present invention, there are multiple first solar cell piece groups in honeycomb arrangement in frame, stable structure,
Convenient for the first solar cell piece group is arranged and processed, difficulty of processing is reduced.
With reference to Figure 15, further, the first solar cell piece group 200 and the second solar cell piece group 300 constitute cell piece
Layer 30, the back side of battery lamella 30 are fixedly connected with insulating layer 40, and insulating layer 40 is fixedly connected backwards to the side of battery lamella 30
There are several conductive metal foil circuits 50, gap, the first solar cell piece group are provided between adjacent conductive metal foil circuit 50
200 and second solar cell piece group 300 be electrically connected by conductive metal foil circuit 50, conductive metal foil circuit 50 is backwards to cell piece
The side of layer 30 is bonded with polymer backboard 70 by adhesive layer 60.
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 Figure 16, 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, the first solar cell piece group and the second solar cell piece group are electrically connected by busbar or conducting wire.
In an embodiment of the present invention, the first solar cell piece group and the second solar cell piece group can also pass through busbar
Or conducting wire electrical connection, circuit can be 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 concatenated are arranged in the frame
One solar cell piece group, the first solar cell piece group are regular hexagon, and the first solar cell piece group includes at least one
The first solar cell piece of block further includes multiple concatenated second solar cell piece groups, and the second solar cell piece group is for filling out
Mend the gap between the first cell piece group and the frame, the second solar cell piece group include at least two piece second too
Positive cell piece, the light-receiving surface of the light-receiving area of the single first solar cell piece group and the single second solar cell piece group
Product is equal, and the second solar cell piece parallel connection in the second solar cell piece group constitutes second solar cell piece
Group, the first solar cell piece group are connected with the second solar cell piece group.
2. solar module according to claim 1, which is characterized in that
First solar cell piece is regular hexagon back contacts solar cell piece,
Second solar cell piece is regular hexagon back contacts solar cell piece described in half piece, described in one third piece
Regular hexagon back contacts solar cell piece described in regular hexagon back contacts solar cell piece, quarter-wave plate, six/a piece of institute
It states any one in regular hexagon back contacts solar cell piece described in regular hexagon back contacts solar cell piece, ten half pieces
Kind.
3. solar module according to claim 1, which is characterized in that
First solar cell piece is half piece regular hexagon back contacts solar cell piece, one third piece regular hexagon
Back contacts solar cell piece, quarter-wave plate regular hexagon back contacts solar cell piece, six/a piece of regular hexagon back contacts
Any one in solar cell piece, ten half piece regular hexagon back contacts solar cell pieces, first solar cell piece
The first solar cell piece parallel connection in group constitutes the first solar cell piece group,
Second solar cell piece is regular hexagon back contacts solar cell piece described in half piece, described in one third piece
Regular hexagon back contacts solar cell piece described in regular hexagon back contacts solar cell piece, quarter-wave plate, six/a piece of institute
It states any one in regular hexagon back contacts solar cell piece described in regular hexagon back contacts solar cell piece, ten half pieces
Kind.
4. solar module according to claim 1, which is characterized in that adjacent the first solar cell piece group edge
The frame longitudinal direction or broadside be sequentially connected in series.
5. solar module according to claim 1, which is characterized in that adjacent the second solar cell piece group string
Connection.
6. solar module according to claim 1, which is characterized in that have in honeycomb arrangement in the frame multiple
The first solar cell piece group.
7. solar module according to claim 1, which is characterized in that the first solar cell piece group and described
Two solar cell piece groups constitute battery lamella, and the back side of the battery lamella is fixedly connected with insulating layer, and the insulating layer is backwards
The side of the battery lamella is fixedly connected with several conductive metal foil circuits, sets between the adjacent conductive metal foil circuit
It is equipped with gap, the first solar cell piece group and the second solar cell piece group are electrically connected by the conductive metal foil circuit
It connects, the conductive metal foil circuit is bonded with polymer backboard by adhesive layer backwards to the side of the battery lamella.
8. solar module according to claim 7, 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.
9. solar module according to claim 7, which is characterized in that the insulating layer has been positioned apart from several open
Mouthful, the electric connector passes through the opening.
10. solar module according to claim 7, which is characterized in that described in the battery lamella edge
Conductive metal foil circuit exposes the battery lamella edge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910147409.9A CN109904263A (en) | 2019-02-27 | 2019-02-27 | solar cell module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910147409.9A CN109904263A (en) | 2019-02-27 | 2019-02-27 | solar cell module |
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Family
ID=66945744
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|---|---|---|---|---|
| JP2007235113A (en) * | 2006-02-01 | 2007-09-13 | Sanyo Electric Co Ltd | Solar cell module |
| JP2011071214A (en) * | 2009-09-24 | 2011-04-07 | Kaneka Corp | Solar cell module |
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| CN109148618A (en) * | 2018-09-30 | 2019-01-04 | 东方日升新能源股份有限公司 | A kind of production method and photovoltaic module of photovoltaic module |
| CN209981238U (en) * | 2019-02-27 | 2020-01-21 | 泰州隆基乐叶光伏科技有限公司 | Solar cell module |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007235113A (en) * | 2006-02-01 | 2007-09-13 | Sanyo Electric Co Ltd | Solar cell module |
| JP2011071214A (en) * | 2009-09-24 | 2011-04-07 | Kaneka Corp | Solar cell module |
| CN202585439U (en) * | 2012-06-05 | 2012-12-05 | 任丙彦 | Mono-crystalline silicon solar battery assembly |
| CN107123696A (en) * | 2017-06-09 | 2017-09-01 | 崔鹏 | A kind of photovoltaic solar cell piece component |
| CN109148618A (en) * | 2018-09-30 | 2019-01-04 | 东方日升新能源股份有限公司 | A kind of production method and photovoltaic module of photovoltaic module |
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Application publication date: 20190618 |