CN207869063U - Portrait type photovoltaic laminate component - Google Patents
Portrait type photovoltaic laminate component Download PDFInfo
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- CN207869063U CN207869063U CN201820177618.9U CN201820177618U CN207869063U CN 207869063 U CN207869063 U CN 207869063U CN 201820177618 U CN201820177618 U CN 201820177618U CN 207869063 U CN207869063 U CN 207869063U
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- battery strings
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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
The utility model discloses a kind of portrait type photovoltaic laminate component, including terminal box and the battery strings group that is encapsulated between foreboard and backboard；The terminal box is arranged in the side of battery strings group long side；Battery strings group is made of multiple long battery strings laterally arranged, and each long battery strings are made of upper and lower two short battery strings；Pass through a welding connection in parallel between upper and lower short battery strings；The upper and lower side of all long battery strings passes through an end busbar connection respectively；One end of two end busbars all extends at terminal box；The end of welding in parallel is connect with the end of two end busbars by the bypass diode in terminal box respectively.By the optimization to battery strings, bypass welding, welding and terminal box in parallel, complex process existing for existing portrait type stacked wafer moudle, the big disadvantage of technology difficulty are solved.Version type scheme suitable for two-sided stacked wafer moudle is provided simultaneously.
Description
Technical field
The utility model belongs to photovoltaic module technical field, and in particular to a kind of portrait type photovoltaic laminate component.
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.
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.The one of solar battery sheet first is placed on another
The lower section of one cell piece second makes the positive gate line electrode in the cell piece first side and the electrode at the second back side overlap.In two electricity
It is conductively connected using conductive material formation between pole.At the same time, the other side of cell piece second is placed in the lower section of cell piece third,
So that the positive gate line electrode in the second other side and the electrode at third back side overlap, conductive material shape is used between two electrodes
At being conductively connected.After the same method, multi-disc cell piece can be sequentially interconnected in form battery strings.
The electrode pattern of laminated batteries piece front and back is prepared by the method to metallize in solar cell surface.
Common method for metallising is that the electrocondution slurry containing Argent grain is printed on battery table in such a way that silk-screen printing adds sintering
Face, 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 positive generally use silicon nitride film, the back side is usually screen printing
The aluminum slurry of brush simultaneously forms Al-BSF through oversintering.Light can be absorbed for some special solar cells, such as positive and negative
Region surface other than the double-side cell of line, backplate and the thin grid line that metallizes also uses silicon nitride film rather than aluminum slurry.
Conductive material in stacked wafer moudle between battery plate electrode includes conducting resinl, conductive tape, the materials such as welding or tin cream
Material.According to the characteristic of conductive material, corresponding preparation method should be selected.For forming the battery of electricity interlinkage using conducting resinl
String, 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
It connects, while good bonding can also be formed with other surfaces of cell piece, such as silicon nitride film layer or silicon materials.
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, the usage amount of slurry can also be reduced by changing the design of battery surface metal pattern.
Solar battery sheet with chamfering is obtained such as the monocrystaline silicon solar cell piece of M2 sizes after being sliced
The slice battery arrived can be divided into two classes according to its shape, the slice battery with chamfering and the not no slice battery of chamfering.Example
If Fig. 1 is a kind of modes that solar battery sheet is cut into five slice batteries, the slice battery of the leftmost side and the rightmost side carries
Chamfering, intermediate three slice batteries do not have chamfering.With similar mode, a piece of solar cell can also be cut into three, four,
The slice battery of six, seven, eight or other quantity, and outermost two slices battery has chamfering, intermediate slice battery is without
Angle.
Photovoltaic laminate component can be divided into two kinds of horizontal version type and portrait type according to the orientation of battery strings.Battery strings and group
The parallel referred to as horizontal version type stacked wafer moudle of part short side, the battery strings referred to as portrait type stacked wafer moudle parallel with component long side.
A kind of circuit diagram of stacked wafer moudle using two parallel diodes is as shown in Figure 1, multiple laminated batteries connection in series-parallel
Battery strings group is formed, each battery strings group is in parallel with 1 bypass diode, and two such battery strings groups are connected into as component.
Using the stacked wafer moudle of this circuit, portrait type may be used, horizontal version type can also be used.
As shown in Fig. 2, it is two short to be located at component usually using two terminal boxes for existing portrait type stacked wafer moudle
The center on side.As shown in figure 3, existing portrait type stacked wafer moudle, is divided into 6 long battery strings, is denoted as string respectively from left to right
A、B、C、D、E、F；The both ends of string ABCDEF are connected with the end busbar at component both ends respectively；It is going here and there between AB, is going here and there between CD, string
There are a bypass welding, the both ends of three bypass weldings to be connected respectively with the bypass bus bar of component both sides between EF respectively.It is other
It can be coincided with the upper and lower between road busbar and end busbar, while electrical isolation is formed by felt pad item.The side at component both ends
Road busbar and end busbar are drawn out to the both ends of connection bypass diode in terminal box respectively.
The middle part of long string ABCDEF can directly be connected together by a welding in parallel；Or in long string ABCDEF
Portion is connected separately with welding, these weldings are interconnected to form welding in parallel；Or these weldings are connected by a welding in parallel
It is connected together；Or long string ABCDEF is made of two short string respectively, is connected by welding between short string.These weldings further through
A piece welding in parallel connects together.Welding in parallel and three bypass weldings are connected with each other.
But the technical solution uses three bypass weldings and two bypass bus bars, production technology is more complex, technique
Difficulty is larger.At the cell piece back side, this can form back side shading for the position of the terminal box of module backside in technical solution one, to
The generating capacity at the double-side assembly back side is reduced, it is serious also to will produce hot spot effect, reduce long-term reliability and the use of component
Service life, so technical solution one is not suitable for two-sided stacked wafer moudle.
Utility model content
The utility model is intended to provide a kind of portrait type photovoltaic laminate component, by battery strings, bypass welding, weldering in parallel
The optimization of band and terminal box solves complex process existing for existing portrait type stacked wafer moudle, the big disadvantage of technology difficulty.It carries simultaneously
For the version type scheme suitable for two-sided stacked wafer moudle.
The utility model is achieved through the following technical solutions above-mentioned purpose：
A kind of portrait type photovoltaic laminate component, including terminal box and the battery strings group that is encapsulated between foreboard and backboard；Institute
The terminal box stated is arranged in the side of battery strings group long side；Battery strings group is made of multiple long battery strings laterally arranged, each
Long battery strings are made of upper and lower two short battery strings；Pass through a welding connection in parallel between upper and lower short battery strings；All long electricity
The upper and lower side of pond string passes through an end busbar connection respectively；One end of two end busbars all extends at terminal box；It is in parallel
The end of welding is connect with the end of two end busbars by the bypass diode in terminal box respectively.
The end busbar is L-type structure, and end busbar is arranged along short side to the long side of battery strings group.
The short battery strings are connect with welding in parallel by the first welding.
The long battery strings end is connect with end busbar by the second welding.
When there are shorter long battery strings in long battery strings, shorter long battery strings are arranged in the outside of battery strings group,
Gap is formed between two short battery strings of shorter long battery strings, shorter short battery strings are with corresponding end busbar by connecting weldering
Band connection；Terminal box is placed on gap location.
There are one hole, the circuit of terminal box is pierced by from hole for the left long side of the backboard or right long side center.
Compared with the existing technology, the utility model has the following technical effects：
The utility model is by being arranged battery case on the outside of the long side of battery component, and the end of welding in parallel is respectively with two
A end busbar is connected by bypass diode, is realized battery strings group and is connected into as component；To not generated to cell backside
It blocks so that two-sided lamination module backside terminal box is unobstructed.To the excellent of battery strings, bypass welding, welding in parallel and terminal box
Change, solves complex process existing for existing portrait type stacked wafer moudle, the big disadvantage of technology difficulty.It provides simultaneously and is suitable for Double-side laminated
The version type scheme of piece component.The terminal box being located therein will not form the cell piece back side and block.Due to two in the program
Terminal box is respectively positioned on the same position in component long side stage casing, so the length of component is more shorter, to generate higher component
Transfer efficiency and lower Material Cost.
Further, the gap in the middle part of component between two short strings up and down of string A, F can be used to place terminal box.This scheme
In the case of spacing between two short strings up and down in not increasing string BCDE, solves two-sided lamination module backside terminal box and block
The problem of cell piece, is more suitable for two-sided stacked wafer moudle.
Description of the drawings
Fig. 1 is stacked wafer moudle circuit diagram；
Fig. 2 is the back appearance figure of existing portrait type stacked wafer moudle；
Fig. 3 is the version type schematic diagram of existing portrait type stacked wafer moudle；
Fig. 4 is a kind of version type figure one of stacked wafer moudle of the utility model；
Fig. 5 is a kind of version type figure two of stacked wafer moudle of the utility model；
Fig. 6 is a kind of back glass trepanning schematic diagram of two-sided double glass stacked wafer moudles of the utility model；
It is marked in figure, 1- bypass bus bars, the ends 2- busbar, 3- bypasses welding, 4- parallel connection weldings, 5- connection welding belts, 6-
Bypass diode, the holes 7-, 8- back glass.
Specific implementation mode
With reference to specific embodiments and the drawings, the utility model is described in further detail：
In the present invention, every welding positioned at the positive and negative extreme multiple battery strings of connection of component, referred to as end confluence
Item 2；It is every to be located at component intermediate potential, and the welding of multiple battery strings is connected, welding 4 referred to as in parallel；It is every with welding 4 in parallel
It is connected, while is parallel to the welding of component long side, referred to as bypasses welding 3；It is every to be connected with bypass diode and bypass welding 3,
It is parallel to the welding of component short side, referred to as bypass bus bar 1 simultaneously.Battery strings in the utility model in a block assembly from a left side to
The right side is respectively to be labeled as A, B, C, D, E, F.
A kind of improved stacked wafer moudle version type is as shown in Figure 4.Two butt busbars 2 are located at component both ends, and all extend to
Position among long side on the left of component, holds the prolongation of busbar 2 to form L-type with component both ends part.A piece welding 4 in parallel
Between the short string of component central battery, it is connected with ABCDEF strings.Unique terminal box is located at component left side central portion, and the inside has two
A bypass diode is connected with two butt busbars 2 or its lead-out wire respectively, the other ends of two bypass diodes with it is in parallel
Welding 4 or its lead-out wire are connected.
Also a kind of improved stacked wafer moudle version type is as shown in Figure 5.The program is similar with Fig. 4 schemes, and difference place is
Terminal box does not form the back side of A battery strings and blocks.Specifically, in this scenario, the width of battery slice of A of going here and there is less than
BCDEF string battery slice width, so equal number of battery slice build up string after, go here and there A length be less than remaining 5 string.
When battery strings are arranged, string A is flushed at component both ends and remaining 5 string or close to being flushed, and goes here and there A portion and welding 4 in parallel in assembly
Distance farther out, needs that battery strings are connected with welding 4 in parallel with longer welding.Portion's string two up and down of A in assembly in this way
Gap between short string can be used to place terminal box.Spacing of this scheme in not increasing string BCDEF between upper and lower 2 short strings
In the case of, it solves the problems, such as that two-sided lamination module backside terminal box blocks cell piece, is more suitable for two-sided stacked wafer moudle.
A kind of back glass 8 is as shown in Figure 6.Hole 7 there are one near the left long side of glass or right long side are central, component
Positive terminal and negative pole end busbar 2 and bypass welding 3 are each perpendicular to after 90 degree of assembly surface bending respectively from trepanning on the left of glass
Middle extraction.
Short battery strings are connect with welding 4 in parallel by the first welding.Long battery strings end passes through the second weldering with end busbar 2
Band connection.
The various improvement projects of the utility model can be combined use, can also be used, and can improve existing
The segmental defect of technology accomplishes feature simple for process, suitable for mass production.
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 portrait type photovoltaic laminate component, which is characterized in that including terminal box and be encapsulated between foreboard and backboard (8)
Battery strings group；The terminal box is arranged in the side of battery strings group long side；Battery strings group is by multiple long batteries laterally arranged
String composition, each long battery strings are made of upper and lower two short battery strings；Pass through a welding (4) in parallel between upper and lower short battery strings
Connection；The upper and lower side of all long battery strings is connected by an end busbar (2) respectively；One end of two end busbars (2) is equal
It extends at terminal box；End of the end of welding (4) in parallel respectively with two end busbars (2) passes through the bypass in terminal box
Diode (6) connects.
2. a kind of portrait type photovoltaic laminate component according to claim 1, which is characterized in that the end busbar (2)
For L-type structure, end busbar (2) is arranged along short side to the long side of battery strings group.
3. a kind of portrait type photovoltaic laminate component according to claim 1 or 2, which is characterized in that the short battery strings
It is connect by the first welding with welding in parallel (4).
4. a kind of portrait type photovoltaic laminate component according to claim 1, which is characterized in that the long battery strings end
It is connect by the second welding with end busbar (2).
5. a kind of portrait type photovoltaic laminate component according to claim 1, which is characterized in that when in long battery strings exist compared with
When short long battery strings, shorter long battery strings are arranged in the outside of battery strings group, two short battery strings of shorter long battery strings
Between form gap, shorter short battery strings are connect with corresponding end busbar (2) by connection welding belt；Terminal box is placed on gap
Place.
6. a kind of portrait type photovoltaic laminate component according to claim 4 or 5, which is characterized in that the backboard (8) is left
There are one hole (7), the circuit of terminal box is pierced by from hole (7) for long side or right long side center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820177618.9U CN207869063U (en) | 2018-02-01 | 2018-02-01 | Portrait type photovoltaic laminate component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820177618.9U CN207869063U (en) | 2018-02-01 | 2018-02-01 | Portrait type photovoltaic laminate component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207869063U true CN207869063U (en) | 2018-09-14 |
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ID=63460623
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820177618.9U Active CN207869063U (en) | 2018-02-01 | 2018-02-01 | Portrait type photovoltaic laminate component |
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| CN (1) | CN207869063U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114759114A (en) * | 2020-12-28 | 2022-07-15 | 苏州阿特斯阳光电力科技有限公司 | Preparation method of photovoltaic module and photovoltaic module |
| US12094991B2 (en) | 2019-11-13 | 2024-09-17 | Maxeon Solar Pte. Ltd. | Hybrid dense solar cells and interconnects for solar modules and related methods of manufacture |
-
2018
- 2018-02-01 CN CN201820177618.9U patent/CN207869063U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12094991B2 (en) | 2019-11-13 | 2024-09-17 | Maxeon Solar Pte. Ltd. | Hybrid dense solar cells and interconnects for solar modules and related methods of manufacture |
| CN114759114A (en) * | 2020-12-28 | 2022-07-15 | 苏州阿特斯阳光电力科技有限公司 | Preparation method of photovoltaic module and photovoltaic module |
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