CN206628478U - The back electrode and battery, component, system of p-type PERC double-side solar cells - Google Patents
The back electrode and battery, component, system of p-type PERC double-side solar cells Download PDFInfo
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- CN206628478U CN206628478U CN201720200220.8U CN201720200220U CN206628478U CN 206628478 U CN206628478 U CN 206628478U CN 201720200220 U CN201720200220 U CN 201720200220U CN 206628478 U CN206628478 U CN 206628478U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a kind of back electrode of p-type PERC double-side solar cells, including some groups of silver-colored primary gate electrodes being parallel to each other and a plurality of aluminium pair gate electrode being parallel to each other, silver-colored primary gate electrode and aluminium the pair gate electrode is mutually perpendicular to, every group of silver primary gate electrode includes at least two silver-colored main grid sub-electrodes, disconnect interval is formed between every two silver-colored main grid sub-electrodes, the position that the aluminium pair gate electrode corresponds to disconnect interval is provided with alum gate spine, and the alum gate spine connects aluminium pair gate electrode.Accordingly, the utility model also provides a kind of battery, component and system using above-mentioned back electrode.Using the utility model, the backplane main grid segmented electrode structure design is simple, saves the consumption of back of the body silver, the area of increase back of the body passivation, while does not influence the current output capability of backplane, so as to lift the photoelectric transformation efficiency of p-type PERC double-side solar cells.
Description
Technical field
The utility model is related to solar cell field, more particularly to a kind of back electrode of p-type PERC double-side solar cells, with
And solar cell, the solar module using above-mentioned back electrode using above-mentioned back electrode, using the sun of above-mentioned back electrode
Can system.
Background technology
It is that solar energy is converted into electric energy using solar cell that solar cell, which generates electricity, because it is green production
Product, environmental pollution will not be caused, and be renewable resource, so in the case of current energy shortage, solar cell is one
Kind has the novel energy of broad based growth future.
The Making programme of p-type PERC double-side solar cells includes：Making herbs into wool, diffusion, etching, back of the body polishing, back side coating film, front
PECVD plated films, silk-screen printing, sintering, annealing and testing, sorting.Solar cell piece during electric energy is converted light energy into,
Photo-generated carrier caused by its inside needs the electrode by outside printing to collect and draw, and is then connected with external circuit, from
And electric current is transported out.Above-mentioned silkscreen process is further subdivided into the back of the body primary gate electrode printing of solar cell, the back of the body
Secondary gate electrode printing and positive electrode printing.Positive electrode slurry and back electrode slurry are printed on crystal silicon solar battery surface, are passed through
Sintering, plays a part of collected current.The design of back electrode exports heavy to closing for the electric current of p-type PERC double-side solar cells
Will, it is an important factor for influenceing the photoelectric transformation efficiency at battery front side and the back side.
Utility model content
Technical problem to be solved in the utility model is, there is provided a kind of back electrode of p-type PERC double-side solar cells,
It is simple in construction, cost is relatively low, the consumption of easy to spread, silver paste is low, photoelectric transformation efficiency is high.
Technical problem to be solved in the utility model also resides in, there is provided a kind of p-type PERC double-side solar cells, structure letter
List, cost are relatively low, easy to spread, silver paste consumption is low, photoelectric transformation efficiency is high.
Technical problem to be solved in the utility model also resides in, there is provided a kind of PERC solar modules, simple in construction,
Cost is relatively low, easy to spread, silver paste consumption is low, photoelectric transformation efficiency is high.
Technical problem to be solved in the utility model also resides in, there is provided a kind of PERC solar energy systems, it is simple in construction, into
This is relatively low, easy to spread, silver paste consumption is low, photoelectric transformation efficiency is high.
In order to solve the above-mentioned technical problem, the utility model provides a kind of back electrode of p-type PERC double-side solar cells,
Including some groups of silver-colored primary gate electrodes being parallel to each other and a plurality of aluminium pair gate electrode being parallel to each other, the silver-colored primary gate electrode and aluminium pair
Gate electrode is mutually perpendicular to, and every group of silver primary gate electrode includes at least two silver-colored main grid sub-electrodes, between every two silver-colored main grid sub-electrodes
Disconnect interval is formed, the position that the aluminium pair gate electrode corresponds to disconnect interval is provided with alum gate spine, and the alum gate spine is by aluminium pair
Gate electrode connects.
As the preferred embodiment of such scheme, aluminium pair gate electrode is continuous corresponding to the disconnect interval of the silver-colored primary gate electrode
Grid line.
As the preferred embodiment of such scheme, aluminium pair gate electrode corresponding to the disconnect interval of the silver-colored primary gate electrode is non-company
Continuous grid line, the gap of the aluminium pair gate electrode correspond to the disconnect interval of silver-colored primary gate electrode.
As the preferred embodiment of such scheme, the quantity of the silver-colored primary gate electrode is 2-8 groups, and every group of silver primary gate electrode includes
2-20 root silver main grid sub-electrodes, the length of the disconnect interval formed between every two silver-colored main grid sub-electrodes are 0.5-5cm, the silver
The width of primary gate electrode is 0.5-5mm.
As the preferred embodiment of such scheme, the quantity of the aluminium pair gate electrode is 30-500 roots, described to state aluminium pair grid electricity
The width of pole is 30-500 microns.
As the preferred embodiment of such scheme, the overlapping region of silver-colored primary gate electrode and aluminium the pair gate electrode is triangle,
Quadrangle, semicircle, pentagon or hexagon.
As the preferred embodiment of such scheme, the overlapping region of silver-colored primary gate electrode and aluminium the pair gate electrode is along aluminium pair grid
The length of electrode direction is 0.05-5mm.
Accordingly, the utility model is also disclosed a kind of p-type PERC double-side solar cells, including above-mentioned p-type PERC two-sided
The back electrode of solar cell.
Accordingly, a kind of PERC solar modules, including PERC solar cells and package material is also disclosed in the utility model
Material, the PERC solar cells include the back electrode of any of the above-described p-type PERC double-side solar cells.
Accordingly, a kind of PERC solar energy systems, including PERC solar cells is also disclosed in the utility model, and the PERC is too
Positive electricity pond includes the back electrode of any of the above-described p-type PERC double-side solar cells.
Implement the utility model, have the advantages that：
The utility model silver primary gate electrode uses sectional design, and every group of silver primary gate electrode includes at least two silver-colored main grid
Electrode, disconnect interval is formed between every two silver-colored main grid sub-electrodes, the position that the aluminium pair gate electrode corresponds to disconnect interval is provided with
Alum gate spine, the alum gate spine connect aluminium pair gate electrode.The utility model backplane main grid segmented electrode structure design is simple,
The consumption of back of the body silver, the area of increase back of the body passivation are saved, while does not influence the current output capability of backplane, so as to lift p-type PERC
The photoelectric transformation efficiency of double-side solar cell.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of the embodiment of back electrode one of p-type PERC double-side solar cells of the utility model；
Fig. 2 is a kind of schematic diagram of another embodiment of back electrode of p-type PERC double-side solar cells of the utility model；
Fig. 3 is the schematic diagram of silver-colored primary gate electrode shown in Fig. 1.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type is described in further detail.
With reference to Fig. 1 and Fig. 2, the utility model provides a kind of a variety of implementations of the back electrode of p-type PERC double-side solar cells
Mode, including some groups of silver-colored primary gate electrodes 1 being parallel to each other and a plurality of aluminium pair gate electrode 2 being parallel to each other, the silver-colored main grid electricity
Pole 1 and aluminium pair gate electrode 2 are mutually perpendicular to, and every group of silver primary gate electrode 1 includes at least two silver-colored main grid sub-electrodes 11, and every two silver is main
Disconnect interval 12 is formed between grid sub-electrode 11, the position of the corresponding disconnect interval 12 of the aluminium pair gate electrode 2 is provided with alum gate spine
21, the alum gate spine 21 connects aluminium pair gate electrode 2.Alum gate spine 21 connects aluminium pair gate electrode 2, and alum gate spine 21 can be with
Positioned at the center of region or other positions.Alum gate spine will be switched off the alum gate in area and is connected with the alum gate in other regions,
So as to be connected with silver-colored main grid, for collecting and turning on the electronics of areas of disconnection.The alum gate line can also be shaped form, arc,
Waveform etc..
As shown in figure 1, Fig. 1 provides a kind of preferred embodiment of the back electrode of p-type PERC double-side solar cells, institute
It is continuous grid line to state aluminium pair gate electrode 2 corresponding to the disconnect interval 12 of silver-colored primary gate electrode 1, and continuous grid line is advantageous to the collection of electronics
And conducting.
The quantity of the silver-colored primary gate electrode 1 is 2-8 groups, and every group of silver primary gate electrode 1 includes 2-20 root silver main grids sub-electrode 11,
Both the current output capability of silver-colored primary gate electrode 1 and aluminium pair gate electrode 2 can have been ensured, cost can be reduced again.
The length of the disconnect interval 12 formed between every two silver-colored main grid sub-electrodes 11 is 0.5-5cm.
The width of the silver-colored primary gate electrode 1 is 0.5-5mm.
The quantity of the aluminium pair gate electrode 2 is 30-500 roots, and the width for stating aluminium pair gate electrode 2 is 30-500 microns.
The size of silver-colored main grid areas of disconnection, the width of silver-colored main grid and quantity, the width of aluminium pair grid and quantity are based on saving silver paste, reduce screening
What light area and strengthening electric current exported considers optimization design.
More preferably, the quantity of the silver-colored primary gate electrode 1 is 2-6 groups, and every group of silver primary gate electrode 1 includes 3-8 root silver main grid
Electrode 11, the length of the disconnect interval 12 formed between every two silver-colored main grid sub-electrodes 11 is 2-4cm, the silver-colored primary gate electrode 1
Width be 1-3mm.The quantity of the aluminium pair gate electrode 2 is 80-220 roots, and the width for stating aluminium pair gate electrode 2 is 50-250
Micron.
Silver-colored primary gate electrode 1 of the present utility model uses sectional design, and collocation aluminium pair gate electrode 2 uses, and saves back of the body silver
Consumption, the area of increase back of the body passivation, while the current output capability of back electrode is not influenceed, so as to lift the two-sided sun of p-type PERC
The photoelectric transformation efficiency of battery.
The overlapping region 13 of the silver-colored primary gate electrode 1 and aluminium pair gate electrode 2 is preferably triangle, quadrangle, semicircle, five
Side shape or hexagon.It should be noted that the overlapping region of silver-colored primary gate electrode 1 and aluminium pair gate electrode 2 can also be other shapes,
Such as octagon, dodecagon or irregular shape, embodiments thereof do not limit to the utility model illustrated embodiment.
Length of the overlapping region of the silver-colored primary gate electrode 1 and aluminium pair gate electrode 2 along the direction of aluminium pair gate electrode 2 is
0.050-5mm.Preferably, the overlapping region of the silver-colored primary gate electrode 1 and aluminium pair gate electrode 2 is along the direction of aluminium pair gate electrode 2
Length is 0.05-2mm.
As shown in Fig. 2 Fig. 2 provides another preferred embodiment of the back electrode of p-type PERC double-side solar cells,
Aluminium pair gate electrode 2 corresponding to the disconnect interval 12 of the silver-colored primary gate electrode 1 is discontinuous grid line, and the aluminium pair gate electrode 2 breaks
Open the disconnect interval 12 that place 22 corresponds to silver-colored primary gate electrode 1.Discontinuous grid line does not set grid line in disconnection area, is easy to silver-colored main grid and weldering
The welding of band.
Accordingly, the utility model is also disclosed a kind of p-type PERC double-side solar cells, including above-mentioned p-type PERC two-sided
The back electrode of solar cell.
Accordingly, a kind of PERC solar modules, including PERC solar cells and package material is also disclosed in the utility model
Material, the PERC solar cells include the back electrode of any of the above-described p-type PERC double-side solar cells.Specifically, as PERC
One embodiment of solar module, its height saturating safety glass, ethylene-vinyl acetate copolymer for being from top to bottom sequentially connected
EVA, PERC solar cell, ethylene-vinyl acetate copolymer EVA and high safety glass composition thoroughly.
Accordingly, a kind of PERC solar energy systems, including PERC solar cells is also disclosed in the utility model, and the PERC is too
Positive electricity pond includes the back electrode of any of the above-described p-type PERC double-side solar cells.One as PERC solar energy systems is preferred real
Apply example, including PERC solar cells, batteries, charging-discharging controller inverter, AC power distribution cabinet/AC distribution panel and solar tracking control system
System.
It should be noted that in PERC solar modules, PERC solar energy systems, except the two-sided sun electricity of p-type PERC
Part outside the back electrode in pond, designed with reference to prior art.
The utility model is expanded on further with specific embodiment below
Embodiment 1
Back electrode includes 2 groups of silver-colored primary gate electrodes being parallel to each other and 50 aluminium pair gate electrodes being parallel to each other, silver-colored main grid electricity
Pole and aluminium pair gate electrode are mutually perpendicular to, and every group of silver primary gate electrode includes 2 silver-colored main grid sub-electrodes, every two silver-colored main grid sub-electrodes it
Between form disconnect interval, the position that aluminium pair gate electrode corresponds to disconnect interval is provided with alum gate spine, and alum gate spine is by aluminium pair gate electrode
Connection, wherein, the width of silver-colored primary gate electrode is 0.5mm, and the length of disconnect interval is 1cm, and the width of aluminium pair gate electrode is micro- for 50
Rice, the length of the overlapping region of silver-colored primary gate electrode and aluminium pair gate electrode along aluminium pair gate electrode direction is 0.1mm.
Embodiment 2
Back electrode includes 4 groups of silver-colored primary gate electrodes being parallel to each other and 80 aluminium pair gate electrodes being parallel to each other, and the silver is main
Gate electrode and aluminium pair gate electrode are mutually perpendicular to, and every group of silver primary gate electrode includes 3 silver-colored main grid sub-electrodes, every two silver-colored main grid electricity
Disconnect interval is formed between pole, the position that the aluminium pair gate electrode corresponds to disconnect interval is provided with alum gate spine, the alum gate spine
Aluminium pair gate electrode is connected, wherein, the width of silver-colored primary gate electrode is 1mm, and the length of disconnect interval is 2cm, aluminium pair gate electrode
Width is 100 microns, and the length of the overlapping region of silver-colored primary gate electrode and aluminium pair gate electrode along aluminium pair gate electrode direction is
0.2mm。
Embodiment 3
Back electrode includes 5 groups of silver-colored primary gate electrodes being parallel to each other and 150 aluminium pair gate electrodes being parallel to each other, and the silver is main
Gate electrode and aluminium pair gate electrode are mutually perpendicular to, and every group of silver primary gate electrode includes 4 silver-colored main grid sub-electrodes, every two silver-colored main grid electricity
Disconnect interval is formed between pole, the position that the aluminium pair gate electrode corresponds to disconnect interval is provided with alum gate spine, the alum gate spine
Aluminium pair gate electrode is connected, wherein, the width of silver-colored primary gate electrode is 1.5mm, and the length of disconnect interval is 3cm, aluminium pair gate electrode
Width be 150 microns, the length of the overlapping region of silver-colored primary gate electrode and aluminium pair gate electrode along aluminium pair gate electrode direction is
0.3mm。
Embodiment 4
Back electrode includes 6 groups of silver-colored primary gate electrodes being parallel to each other and 200 aluminium pair gate electrodes being parallel to each other, and the silver is main
Gate electrode and aluminium pair gate electrode are mutually perpendicular to, and every group of silver primary gate electrode includes 5 silver-colored main grid sub-electrodes, every two silver-colored main grid electricity
Disconnect interval is formed between pole, the position that the aluminium pair gate electrode corresponds to disconnect interval is provided with alum gate spine, the alum gate spine
Aluminium pair gate electrode is connected, wherein, the width of silver-colored primary gate electrode is 2mm, and the length of disconnect interval is 4cm, aluminium pair gate electrode
Width is 200 microns, and the length of the overlapping region of silver-colored primary gate electrode and aluminium pair gate electrode along aluminium pair gate electrode direction is
0.4mm。
Embodiment 5
Back electrode includes 8 groups of silver-colored primary gate electrodes being parallel to each other and 300 aluminium pair gate electrodes being parallel to each other, and the silver is main
Gate electrode and aluminium pair gate electrode are mutually perpendicular to, and every group of silver primary gate electrode includes 6 silver-colored main grid sub-electrodes, every two silver-colored main grid electricity
Disconnect interval is formed between pole, the position that the aluminium pair gate electrode corresponds to disconnect interval is provided with alum gate spine, the alum gate spine
Aluminium pair gate electrode is connected, wherein, the width of silver-colored primary gate electrode is 3mm, and the length of disconnect interval is 5cm, aluminium pair gate electrode
Width is 300 microns, and the length of the overlapping region of silver-colored primary gate electrode and aluminium pair gate electrode along aluminium pair gate electrode direction is
0.5mm。
Embodiment 6
Back electrode includes 7 groups of silver-colored primary gate electrodes being parallel to each other and 250 aluminium pair gate electrodes being parallel to each other, and the silver is main
Gate electrode and aluminium pair gate electrode are mutually perpendicular to, and every group of silver primary gate electrode includes 5 silver-colored main grid sub-electrodes, every two silver-colored main grid electricity
Disconnect interval is formed between pole, the position that the aluminium pair gate electrode corresponds to disconnect interval is provided with alum gate spine, the alum gate spine
Aluminium pair gate electrode is connected, wherein, the width of silver-colored primary gate electrode is 2.5mm, and the length of disconnect interval is 2.5cm, and aluminium pair grid are electric
The width of pole is 250 microns, and the length of the overlapping region of silver-colored primary gate electrode and aluminium pair gate electrode along aluminium pair gate electrode direction is
0.4mm。
Finally, it should be noted that above example is only illustrating the technical solution of the utility model rather than to this reality
With the limitation of novel protected scope, although being explained in detail with reference to preferred embodiment to the utility model, this area it is common
It will be appreciated by the skilled person that the technical solution of the utility model can be modified or equivalent substitution, without departing from this reality
With the spirit and scope of new technique scheme.
Claims (10)
1. a kind of back electrode of p-type PERC double-side solar cells, it is characterised in that including some groups of silver-colored main grid being parallel to each other electricity
Pole and a plurality of aluminium pair gate electrode being parallel to each other, silver-colored primary gate electrode and aluminium the pair gate electrode are mutually perpendicular to, every group of silver main grid electricity
Pole includes at least two silver-colored main grid sub-electrodes, and disconnect interval, the aluminium pair gate electrode are formed between every two silver-colored main grid sub-electrodes
The position of corresponding disconnect interval is provided with alum gate spine, and the alum gate spine connects aluminium pair gate electrode.
2. the back electrode of p-type PERC double-side solar cells as claimed in claim 1, it is characterised in that the silver-colored primary gate electrode
Aluminium pair gate electrode corresponding to disconnect interval is continuous grid line.
3. the back electrode of p-type PERC double-side solar cells as claimed in claim 1, it is characterised in that the silver-colored primary gate electrode
Aluminium pair gate electrode corresponding to disconnect interval is discontinuous grid line, and the gap of the aluminium pair gate electrode corresponds to silver-colored primary gate electrode
Disconnect interval.
4. the back electrode of p-type PERC double-side solar cells as claimed in claim 1, it is characterised in that the silver-colored primary gate electrode
Quantity is 2-8 groups, and every group of silver primary gate electrode includes what is formed between 2-20 roots every two silver-colored main grid sub-electrodes of silver main grid sub-electrode
The length of disconnect interval is 0.5-5cm, and the width of the silver-colored primary gate electrode is 0.5-5mm.
5. the back electrode of p-type PERC double-side solar cells as claimed in claim 1, it is characterised in that the aluminium pair gate electrode
Quantity is 30-500 roots, and the width of the aluminium pair gate electrode is 30-500 microns.
6. the back electrode of p-type PERC double-side solar cells as claimed in claim 1, it is characterised in that the silver-colored primary gate electrode and
The overlapping region of aluminium pair gate electrode is triangle, quadrangle, semicircle, pentagon or hexagon.
7. the back electrode of p-type PERC double-side solar cells as claimed in claim 1, it is characterised in that the silver-colored primary gate electrode and
Length of the overlapping region of aluminium pair gate electrode along aluminium pair gate electrode direction is 0.05-5mm.
8. a kind of p-type PERC double-side solar cells, it is characterised in that including the p-type PERC as described in claim any one of 1-7
The back electrode of double-side solar cell.
9. a kind of PERC solar modules, it is characterised in that including PERC solar cells and encapsulating material, it is characterised in that
The PERC solar cells include the back electrode of the p-type PERC double-side solar cells described in claim any one of 1-7.
10. a kind of PERC solar energy systems, including PERC solar cells, it is characterised in that the PERC solar cells include power
Profit requires the back electrode of the p-type PERC double-side solar cells described in any one of 1-7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720200220.8U CN206628478U (en) | 2017-03-03 | 2017-03-03 | The back electrode and battery, component, system of p-type PERC double-side solar cells |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720200220.8U CN206628478U (en) | 2017-03-03 | 2017-03-03 | The back electrode and battery, component, system of p-type PERC double-side solar cells |
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| CN206628478U true CN206628478U (en) | 2017-11-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910783A (en) * | 2017-03-03 | 2017-06-30 | 广东爱康太阳能科技有限公司 | The back electrode and battery, component, system of p-type PERC double-side solar cells |
| CN111200027A (en) * | 2018-11-19 | 2020-05-26 | 财团法人工业技术研究院 | Solar cell and electrode structure thereof |
-
2017
- 2017-03-03 CN CN201720200220.8U patent/CN206628478U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910783A (en) * | 2017-03-03 | 2017-06-30 | 广东爱康太阳能科技有限公司 | The back electrode and battery, component, system of p-type PERC double-side solar cells |
| CN111200027A (en) * | 2018-11-19 | 2020-05-26 | 财团法人工业技术研究院 | Solar cell and electrode structure thereof |
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Address after: No. 69, C District, Sanshui Industrial Park, Sanshui, Foshan, Guangdong Patentee after: GUANGDONG AIKO SOLAR ENERGY TECHNOLOGY Co.,Ltd. Address before: No. 69, C District, Sanshui Industrial Park, Foshan, Guangdong Patentee before: GUANGDONG AIKO SOLAR ENERGY TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20180125 Address after: No. 69, C District, Sanshui Industrial Park, Sanshui, Foshan, Guangdong Co-patentee after: ZHEJIANG AIKO SOLAR ENERGY TECHNOLOGY Co.,Ltd. Patentee after: GUANGDONG AIKO SOLAR ENERGY TECHNOLOGY Co.,Ltd. Address before: No. 69, C District, Sanshui Industrial Park, Sanshui, Foshan, Guangdong Patentee before: GUANGDONG AIKO SOLAR ENERGY TECHNOLOGY Co.,Ltd. |