CN207909894U - It is a kind of that there is the stacked wafer moudle for improving visual effect - Google Patents
It is a kind of that there is the stacked wafer moudle for improving visual effect Download PDFInfo
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- CN207909894U CN207909894U CN201820421699.2U CN201820421699U CN207909894U CN 207909894 U CN207909894 U CN 207909894U CN 201820421699 U CN201820421699 U CN 201820421699U CN 207909894 U CN207909894 U CN 207909894U
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- wafer moudle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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Abstract
The utility model discloses a kind of stacked wafer moudles for having and improving visual effect, it include the battery strings group being encapsulated in encapsulated layer between foreboard and backboard, battery strings group is made of multiple long battery strings, it is connected by welding between long battery strings, long battery strings are made of two short battery strings, and the upper and lower side of long battery strings is connect with a busbar respectively；It is connected by connection welding belt between the upper and lower short battery strings of long battery strings, all connection welding belts are connect with welding in parallel；Bypass welding along component long side direction arrangement is arranged between two long battery strings, and bypass welding extends to the end of long battery strings with the both ends that welding in parallel connect, and bypasses welding；The position that the position of the corresponding welding in foreboard inside or encapsulated layer correspond to welding is provided with dark decorative layer.Through the stack in piece component encapsulating material optimization, solve the problems, such as that backboard is reflective causes aberration for various weldings present in existing stacked wafer moudle and white.
Description
Technical field
The utility model belongs to photovoltaic module technical field, and in particular to a kind of to have the stack of laminations for improving visual effect
Part.
Background technology
Solar cell is a kind of device that luminous energy is converted into direct current using photovoltaic effect.According to photoelectricity
The difference of transition material, solar cell include monocrystalline silicon, polysilicon, amorphous silicon membrane, Cadimium telluride thin film, and copper and indium gallium tin is thin
Film, GaAs, fuel sensitization, perovskite, multiple types such as lamination.One of the most common is crystal silicon solar energy battery, including
Monocrystaline silicon solar cell and polysilicon solar cell.Solar cell is usually sheet, can absorb luminous energy and by its turn
Turn to electric energy is referred to as extinction face or front on one side, is in addition referred to as the back side on one side.For part solar cell, the back side
It is electric energy that can also absorb and convert luminous energy, these solar cells are referred to as double-side cell.
The electrode pattern of crystal silicon solar cell sheet front and back, by the side that solar cell surface metallizes
It is prepared by method.Common method for metallising is to be printed on the electrocondution slurry containing Argent grain in such a way that silk-screen printing adds sintering
Battery surface, by the halftone graphic designs for changing silk-screen printing, thus it is possible to vary electrode pattern.
Crystal silicon solar energy battery is other than electrode zone, and front is usually silicon nitride film, and the back side is usually silk-screen printing
Aluminum slurry and through oversintering formed Al-BSF.Light can be absorbed for some special solar cells, such as positive and negative
Two-sided P-type silicon PERC batteries or two-sided N-type silicon PERT batteries, the region surface other than backplate and the thin grid line of metallizing
It is also silicon nitride film.For two-sided HJT batteries, i.e. hetero-junction solar cell, the electrode of front and back and the region other than grid line
Surface is transparent conductive oxide film, such as tin indium oxide ITO.
By multiple solar cell electricity interlinkage post packages in glass or organic polymer, what is obtained can be used for a long time
Photovoltaic apparatus, be referred to as photovoltaic module.Cell piece mutual contact mode in Crystalline Silicon PV Module, common are cell piece
It is ranked sequentially, using the tin-coated welding strip containing Copper base material as interconnecting strip, the front that interconnecting strip one end is welded on first cell piece is main
On grid line, the interconnecting strip other end is welded in the backplate of second adjacent cell piece.The both ends of second interconnecting strip point
It is not welded in the front main grid line of second cell piece and the back side grid line of third piece cell piece, and so on.Thus by institute
Some cell pieces are connected into a string.
The technology that stacked wafer moudle is interconnected using another cell piece.As shown in Figure 1, by solar battery sheet first
One is placed on the lower section of another cell piece second, makes electrode phase mutual respect of the positive gate line electrode in the cell piece first side with the second back side
It closes.Conductive material formation is used to be conductively connected between two electrodes.At the same time, the other side of cell piece second is placed in battery
The lower section of piece third so that the positive gate line electrode in the second other side and the electrode at third back side overlap, and adopt between two electrodes
It is conductively connected with conductive material formation.After the same method, multi-disc cell piece can be sequentially interconnected in form battery strings.
Lamination mutual contact mode may also used to form interconnection between solar cell is sliced.Solar cell is sliced
Refer to the small pieces for a piece of complete or incomplete solar cell being cut by machinery, laser or other modes.Solar-electricity
The shape of pond slice can be polygon shaped like rectangle, triangle, curvilinear figure such as circle, fan-shaped, ellipse or irregular component
Shape.The number of sections that a piece of solar cell can be cut into is K pieces, wherein 1≤K≤20.
For the solar battery sheet of square or rectangle, shape can be cut to, K rectangle of size all same is cut
Piece, wherein 1≤K≤20.
For the quasi- rectangle solar battery sheet with chamfering, it can be cut into K pieces slice battery, wherein 1≤K≤
20, and some slice batteries are the quasi- rectangle for having 1 or 2 chamfering, some is sliced battery as the rectangle of no chamfering.Such as Fig. 2 is
Solar battery sheet is cut into a kind of modes of five slice batteries, the slice battery of the leftmost side and the rightmost side carries chamfering, in
Between three slice batteries there is no chamfering.
Conductive material in stacked wafer moudle in same battery strings between adjacent cell plate electrode includes conducting resinl, conducting resinl
The materials such as band, welding or tin cream.According to the characteristic of conductive material, corresponding preparation method should be selected.For using conducting resinl shape
At the battery strings of electricity interlinkage, the method that dispensing or silk-screen printing may be used.
The main component of conducting resinl includes resin material matrix and conductive filler.Filler therein is typically silver or argentiferous
Particle.Compared with commonly applying tin copper strips, conducting resinl can not only connect at good mechanical adhering force with conductive with silver electrode
The conducting resinl for connecing, while having can also form good viscous with other surfaces of cell piece, such as silicon nitride film layer or silicon materials
It connects.
Since silver is a kind of noble metal, the cost of solar cell size and conducting resinl containing silver is all relatively more high
It is expensive.For example various carbon materials of cheap metal material such as copper, aluminium, nickel or non-metallic conducting material, tin indium oxide etc. may be used
The silver in slurry or conducting resinl is substituted, it can also be by changing the design of battery surface metal pattern or the design of conductive paste pattern
Carry out the corresponding usage amount for reducing silver paste or conducting resinl.
As shown in figure 3, photovoltaic laminate component can be divided into two kinds of horizontal version type and portrait type according to the orientation of battery strings.
The battery strings referred to as horizontal version type stacked wafer moudle parallel with component short side, the battery strings referred to as portrait type lamination parallel with component long side
Component.
A kind of circuit diagram of stacked wafer moudle using 2 parallel diodes is as shown in figure 4, multiple laminated batteries connection in series-parallel shapes
At battery strings group, each battery strings group is in parallel with 1 bypass diode, and 2 such battery strings groups are connected into as component.Using
Portrait type may be used in the stacked wafer moudle of this circuit, can also use horizontal version type.
It is sliced using two-sided laminated batteries or two-sided laminated batteries, the two-sided PERC laminated batteries of P-type silicon as previously mentioned,
The two-sided PERT laminated batteries of N-type silicon or HJT laminated batteries can obtain two-sided stacked wafer moudle by lamination process above-mentioned.
In stacked wafer moudle, it is divided into N number of long battery strings (N >=1) from left to right.Such as the portrait type Double-side laminated in Fig. 3
Piece component contains 6 long battery strings altogether, is denoted as string A, B, C, D, E, F respectively.
In stacked wafer moudle, every welding positioned at the positive and negative extreme multiple battery strings of connection of component, referred to as busbar；It is all
It is to be located at component intermediate potential, and connect the welding of multiple battery strings, welding referred to as in parallel；It is every to be connected with welding in parallel, it walks
To being parallel to battery strings, and the welding of bypass diode is connected, referred to as bypasses welding.
A kind of portrait type single side stacked wafer moudle using prior art is as shown in figure 5, the upper and lower side of long battery strings divides
It is not connect with a busbar；It is connect with welding in parallel between the upper and lower short battery strings of long battery strings；Along component long side direction cloth
The bypass welding set is arranged between long battery strings CD, and bypass welding is connect with welding in parallel, and the both ends for bypassing welding extend
To the end of long battery strings；The bypass welding and busbar of long battery strings end are connected respectively to the bypass two in corresponding terminal box
The both ends of pole pipe.Cell piece and bypass welding, welding in parallel, busbar are encapsulated in ethylene-vinyl acetate copolymer (referred to as
EVA) in glued membrane, the outside of EVA adhesive film is photovoltaic glass and white polymer backboard, is located at the front and back of component.
White polymer backboard therein, it includes polyethylene terephthalate (abbreviation usually to have layered structure, main component
PET), fluorine material such as polyvinyl fluoride (abbreviation PVF) or Kynoar (abbreviation PVDF), adhesive, titanium dioxide filler etc..
A kind of two-sided double glass stacked wafer moudles of portrait type using prior art as shown in fig. 6, long battery strings up and down
End is connect with a busbar respectively；It is connect with welding in parallel between the upper and lower short battery strings of long battery strings；Along component long side side
It is arranged between long battery strings CD to the bypass welding of arrangement, bypass welding is connect with welding in parallel, and bypasses the both ends of welding
It extends to the tapping of back-panel glass and is pierced by from hole；Lead-out wire one end is connected with busbar, and the other end extends to backboard
The tapping of glass is simultaneously pierced by from hole；It is connected respectively in corresponding terminal box from the bypass welding and lead-out wire being pierced by hole
The both ends of bypass diode.Cell piece and bypass welding, welding in parallel, busbar are encapsulated in polyolefin (abbreviation PO) glued membrane
In, outside and foreboard and the backplane of PO glued membranes, foreboard and backboard are glass, wherein have trepanning in back-panel glass.
In prior art, the weldings such as busbar, bypass welding, welding in parallel are that component front is visible.Due to normal
Welding is to apply tin copper strips, and the tin layers on surface have stronger mirror reflection effect, reflected light to penetrate component incident light
Positive encapsulating material and glass project, and are regarded with cell piece surface since light is formed by the black that absorption is formed or deep blue-black
Apparent aberration in feel.For technical solution one, the reflective of the white backboard of battery strings gap and surrounding is similarly formed and battery
The apparent aberration of piece surface color.Above-mentioned aberration, it is right when photovoltaic laminate component is applied and lives in groups with someone or is movable regional
The vision or even psychology of people forms certain interference, reduces the harmonious degree of photovoltaic module and surrounding enviroment, and be possible to shadow
Ring the normal life and work to crowd.
Utility model content
The utility model provides a kind of stacked wafer moudle for having and improving visual effect, it is intended to be sealed in piece component through the stack
The optimization of package material solves the problems, such as that backboard is reflective causes aberration for various weldings present in existing stacked wafer moudle and white.
The utility model is achieved through the following technical solutions above-mentioned purpose：
It is a kind of that there is the stacked wafer moudle for improving visual effect, include the battery being encapsulated in encapsulated layer between foreboard and backboard
String group, battery strings group are made of multiple long battery strings, are connected by welding between long battery strings, and welding includes busbar, bypass
Welding, welding in parallel and connection welding belt；Wherein, long battery strings are made of two short battery strings, the upper and lower side difference of long battery strings
It is connect with a busbar；Connected by connection welding belt between the upper and lower short battery strings of long battery strings, all connection welding belts with
Welding connection in parallel；Along component long side direction arrangement bypass welding be arranged between two long battery strings, bypass welding with simultaneously
Join welding connection, and the both ends for bypassing welding extend to the end of long battery strings；The foreboard is transparent panel, and foreboard inside is right
Answer the position of welding or position that encapsulated layer corresponds to welding be provided with dark decorative layer, dark decorative layer be dark paint layer or
Person's dark color pad pasting.
The backboard is the polymer backboard of dark color.
The dark decorative layer is black decorative layer.
Dark decorative layer on the encapsulated layer is positioned close to the side of foreboard or the side close to welding.
Busbar, bypass welding, welding in parallel and connection welding belt surface are both provided with dark decorative layer.
Stacked wafer moudle is rimless stacked wafer moudle or has frame stacked wafer moudle.
Compared with the existing technology, the utility model has the following technical effects：
The position that the utility model corresponds to welding by the position or encapsulated layer that correspond to welding on the inside of foreboard is arranged deeply
Color decorative layer, the color feedback of dark decorative layer is with cell piece surface since light is absorbed the black formed or deep blue-black not
Constitute visual apparent aberration.So that when photovoltaic laminate component is applied and lives in groups with someone or is movable regional, Bu Huiying
The vision interference for ringing people, ensure that the normal life and work of crowd, to solve in existing single side and two-sided stacked wafer moudle
The problem of aberration of existing welding and backboard and cell piece.
Further, welding surface is also equipped with dark decorative layer, can more comprehensively solve welding and backboard and battery
The problem of aberration of piece.
Description of the drawings
Fig. 1：The lamination of cell piece interconnects schematic diagram；
Fig. 2：Battery (left side) with chamfering is cut into 5 battery slices (right side)；
Fig. 3：Horizontal version type (a) and portrait type (b) stacked wafer moudle；
Fig. 4：Stacked wafer moudle circuit diagram with 2 diodes；
Fig. 5：A kind of schematic diagram of single side stacked wafer moudle；
Fig. 6：A kind of front schematic view of two-sided stacked wafer moudle；
Fig. 7：A kind of graphic scheme schematic diagram carrying out dark modification to stacked wafer moudle foreboard；
Fig. 8：It is a kind of dark modification to be carried out to preceding glass sheet and the stack of laminations for the filler strip that insulate using black backboard and black
Part schematic diagram；
It is marked in figure, 1- busbars, 2- bypass weldings, 3- parallel connection weldings, 4- connection welding belts, 5- terminal boxes, the holes 6-, before 7-
Plate, 8- dark color decorative layers, 9- backboards.
Specific implementation mode
With reference to specific embodiments and the drawings, the utility model is described in further detail：
As shown in FIG. 7 and 8, the utility model firstly reduces the reflected light on welding surface, to reduce welding and electricity
The aberration in pond, realization means include and are not limited to：
(1) in foreboard 7, usually glass, corresponds to and carries out increasing dark decorative layer 8 on the position of welding, as shown in Figure 7.
Realize that the scheme of this modification includes：With the method for silk-screen printing by black or other dark paints, such as carbon black pellet, according to pre-
The halftone figure first set, is printed onto the inner surface of foreboard 7；Or black or dark pad pasting are attached to the inner surface of foreboard 7
The position of corresponding welding.
(2) in component front encapsulating material such as EVA or PO, close to the side of 7 glass of foreboard, or close to the one of welding
Side, sticks black or dark pad pasting, the position of pad pasting, shape, size and the position for the welding to be blocked, shape, size phase
It is corresponding.
Secondly, backboard 9 is carried on the back using the photovoltaic laminate component of polymer backboard 9 using black or the polymer of dark color
Plate 9, to reduce the aberration of backboard 9 and cell piece.
Component in the utility model can be rimless stacked wafer moudle, can also be the stacked wafer moudle for having frame.
One specific embodiment of the utility model is as shown in figure 8, battery length string ABCDEF is made of battery slice, each
The length of battery slice is 156.75mm, and width is 26.125mm, and the shape of battery slice is rectangle or the quasi- square with chamfering
The lamination overlap distance of shape, adjacent cell slice is 1mm.
The both ends of long string ABCDEF are connected with the busbar at component both ends 1 respectively；Busbar 1 passes through lead-out wire and terminal box
Bypass diode in 5 is connected.Long string ABCDEF is made of two short string respectively, and each short string has 32 battery slices, short string
Between connected by connection welding belt 4.These weldings 4 connect together further through a welding 3 in parallel.Welding 3 in parallel is located at up and down
It is parallel with component short side between the short string of battery.Have between battery strings CD one bypass welding 2, bypass welding 2 both ends respectively with
Two bypass diodes are connected, and the centre for bypassing welding 2 is connected with welding 3 in parallel.
In the embodiment, the front plate 6 of component is glass, and glass inner side contains the blacking of carbon black using silk-screen printing
As dark decorative layer 8, the region where the pattern covers of dark decorative layer 8 busbar 1, bypass welding 2, welding 3 in parallel.
Backboard 9 uses black photovoltaic polymer backboard 9, such as MGTPE390 (black) backboard 9 of Ming Guan companies.It bypasses welding and converges
The lead-out wire of stream item is passed through from the notch of backboard 9 respectively, and connects two ends of bypass diode, in bypass welding 3 and confluence
The lead-out wire of item 1 is separated by the filler strip that insulate with battery strings.Bypass diode is located in terminal box 5, and terminal box 5 is sticked to the black back of the body
The outside of plate 9.
Difference lies in, alternative solutions for the utility model and alternative solution using coating dark material on welding, or
The mode that dark film is covered on welding reduces aberration.The utility model is used and is coated on encapsulating material such as glass or glued membrane
Dark material or the mode of the dark film of covering reduce aberration.
The scope of protection of the utility model is not limited to the above embodiments, comes for those of ordinary skill in the art
It says, if the various changes and deformation to the utility model progress belong to the utility model claims and equivalent technologies range
It is interior, then including the intention of the utility model also includes these changes and deforms.
Claims (6)
1. a kind of having the stacked wafer moudle for improving visual effect, which is characterized in that including being encapsulated in foreboard (7) and the back of the body with encapsulated layer
Battery strings group between plate (9), battery strings group are made of multiple long battery strings, are connected by welding between long battery strings, welding
Including busbar (1), bypass welding (2), welding (3) in parallel and connection welding belt (4)；Wherein, long battery strings are by two short batteries
String composition, the upper and lower side of long battery strings are connect with a busbar (1) respectively；Pass through between the upper and lower short battery strings of long battery strings
Connection welding belt (4) connects, and all connection welding belts (4) are connect with welding (3) in parallel；Along the bypass weldering of component long side direction arrangement
Band (2) is arranged between two long battery strings, and bypass welding (2) is connect with welding (3) in parallel, and bypasses the both ends of welding (2)
Extend to the end of long battery strings；The foreboard (7) is transparent panel, and position or the encapsulation of welding are corresponded on the inside of foreboard (7)
The position of the corresponding welding of layer is provided with dark decorative layer (8), and dark decorative layer (8) is dark paint layer or dark pad pasting.
2. according to claim 1 have the stacked wafer moudle for improving visual effect, which is characterized in that the backboard (9)
For dark polymer backboard.
3. according to claim 1 have the stacked wafer moudle for improving visual effect, which is characterized in that the dark modification
Layer (8) is black decorative layer.
4. according to claim 1 have the stacked wafer moudle for improving visual effect, which is characterized in that on the encapsulated layer
Dark decorative layer be positioned close to foreboard (7) side or close to welding side.
5. according to claim 1 have the stacked wafer moudle for improving visual effect, which is characterized in that busbar (1), bypass
Welding (2), welding (3) and connection welding belt (4) surface in parallel are both provided with dark decorative layer (8).
6. according to claim 1 have the stacked wafer moudle for improving visual effect, which is characterized in that stacked wafer moudle is rimless
Stacked wafer moudle has frame stacked wafer moudle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820421699.2U CN207909894U (en) | 2018-03-27 | 2018-03-27 | It is a kind of that there is the stacked wafer moudle for improving visual effect |
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| CN201820421699.2U CN207909894U (en) | 2018-03-27 | 2018-03-27 | It is a kind of that there is the stacked wafer moudle for improving visual effect |
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| CN207909894U true CN207909894U (en) | 2018-09-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038433A (en) * | 2020-09-17 | 2020-12-04 | 扬州晶华新能源科技有限公司 | Black EVA photovoltaic module and preparation method thereof |
-
2018
- 2018-03-27 CN CN201820421699.2U patent/CN207909894U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038433A (en) * | 2020-09-17 | 2020-12-04 | 扬州晶华新能源科技有限公司 | Black EVA photovoltaic module and preparation method thereof |
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