CN206628485U - P-type PERC double-sided solar batteries, component and system - Google Patents
P-type PERC double-sided solar batteries, component and system Download PDFInfo
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- CN206628485U CN206628485U CN201720203385.0U CN201720203385U CN206628485U CN 206628485 U CN206628485 U CN 206628485U CN 201720203385 U CN201720203385 U CN 201720203385U CN 206628485 U CN206628485 U CN 206628485U
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- alum gate
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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
- Y02E10/547—Monocrystalline silicon PV cells
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a kind of p-type PERC double-sided solar batteries, including the back of the body silver-colored main grid, alum gate line, backside passivation film, P-type silicon, N-type emitter stage, front side silicon nitride film and positive silver electrode；Backside passivation film film is provided with several lbg areas, and lbg area includes alum gate slotted zones, setting at least 1 group of lbg unit in each alum gate slotted zones, the alum gate line is connected by alum gate slotted zones with P-type silicon；Alum gate line is parallel with lbg unit or is vertically arranged；Alum gate line includes the first alum gate line, second alum gate line and the 3rd alum gate line, the first alum gate line are vertically arranged with carrying on the back silver-colored main grid, and the second alum gate line be arranged in parallel with carrying on the back silver-colored main grid, 3rd alum gate line intersects connection, 10 ° of 90 ° of ＜ gradients ＜ with carrying on the back silver-colored main grid with certain gradient.The invention also discloses a kind of p-type PERC double-sided solars component and system.Using the utility model, can two-sided absorption sunshine, expand the application of solar cell and improve photoelectric transformation efficiency.
Description
Technical field
It the utility model is related to area of solar cell, more particularly to a kind of p-type PERC double-sided solar batteries；This practicality
It is new to further relate to a kind of p-type PERC double-sided solars component and system.
Background technology
Crystal silicon solar batteries are a kind of effectively absorption solar radiant energies, and electricity is converted optical energy into using photovoltaic effect
Can device, when solar irradiation is in semiconductor P-N junction, form new hole-electron pair, it is empty in the presence of P-N junction electric field
Cave flows to P areas by N areas, and electronics flows to N areas by P areas, and electric current is just formed after connecting circuit.
Conventional crystalline silicon solar cell substantially only with front passivating technique, is sunk in front side of silicon wafer with PECVD mode
One layer of silicon nitride film of product, reduce recombination rate of few son on preceding surface, can significantly be lifted crystal silicon battery open-circuit voltage and
Short circuit current, so as to lift the photoelectric transformation efficiency of crystal silicon solar battery.
With the requirement more and more higher of the photoelectric transformation efficiency to crystal silicon battery, people begin one's study PERC the back of the body passivation sun
Battery technology.The focus of industry main flow producer concentrates on the volume production of one side PERC solar cells at present, and p-type PERC is two-sided too
Positive energy battery, because photoelectric transformation efficiency is high, while two-sided absorption sunshine, generated energy is higher, has in actual applications more
Big use value.But p-type PERC double-sided solar batteries are also only grinding of being done in laboratory of some research institutions at present
Study carefully, how the structure of p-type PERC double-sided solar batteries is optimized so as to adapt to produce in enormous quantities, need art technology
The further explore and study of personnel.
The content of the invention
Technical problem to be solved in the utility model is, there is provided a kind of p-type PERC double-sided solar batteries, can be two-sided
Sunshine is absorbed, expands the application of solar cell and improves photoelectric transformation efficiency.
Technical problem to be solved in the utility model is, there is provided a kind of p-type PERC double-sided solar batteries, component and
System, can two-sided absorption sunshine, expand solar cell application and improve photoelectric transformation efficiency.
In order to solve the above-mentioned technical problem, the utility model provides a kind of p-type PERC double-sided solar batteries, including the back of the body
Silver-colored main grid, alum gate line, back side silicon nitride, backside oxide aluminium film, P-type silicon, N-type emitter stage, front side silicon nitride film and positive silver electricity
Pole；The back side silicon nitride, backside oxide aluminium film, P-type silicon, N-type emitter stage, front side silicon nitride film and positive silver electrode from it is lower to
On stack gradually connection；
The back side silicon nitride and backside oxide aluminium film form several lbg areas, laser after lbg
Slotted zones include alum gate slotted zones, setting at least 1 group of lbg unit in each alum gate slotted zones, the alum gate line passes through aluminium
Grid slotted zones are connected with P-type silicon；The alum gate line is parallel with lbg unit or is vertically arranged；
The alum gate line includes the first alum gate line, the second alum gate line and the 3rd alum gate line, the first alum gate line and back of the body silver
Main grid is vertically arranged, and the second alum gate line be arranged in parallel with carrying on the back silver-colored main grid, and the 3rd alum gate line is with carrying on the back silver-colored main grid with certain
The intersecting connection of gradient, 10 ° of 90 ° of ＜ gradients ＜.
As the optimal technical scheme of the p-type PERC double-sided solar batteries, in addition to grid line spine, grid line spine is set
Put on alum gate line, the grid line spine is connected with alum gate line；
The pattern of the grid line spine is the dotted line that a continuous straight line or multiple line segments form；
The radical of the grid line spine is 1-20 bars；
The grid line spine is made up of silver paste, and its width is 30-60 microns；Or, the grid line spine is made up of aluminium paste, its
Width is 50-500 microns.
As the optimal technical scheme of the p-type PERC double-sided solar batteries, the lbg area is also included along grid
The spine slotted zones of line spine printed wire fluting, setting at least 1 group of lbg unit, the grid in each spine slotted zones
Line spine is connected by spine slotted zones with P-type silicon.
As the optimal technical scheme of the p-type PERC double-sided solar batteries, in addition to alum gate housing, outside the alum gate
Frame is cubic frame, and end points of the alum gate housing respectively with alum gate line and the silver-colored main grid of the back of the body is connected；The each edge frame of the alum gate housing
Width be 30-1000 μm.
As the optimal technical scheme of the p-type PERC double-sided solar batteries, the lbg area is also included along aluminium
The aluminium frame slotted zones of grid housing printed wire fluting, setting at least 1 group of lbg unit, the aluminium in each aluminium frame slotted zones
Grid housing is connected by aluminium frame slotted zones with P-type silicon.
As the optimal technical scheme of the p-type PERC double-sided solar batteries, every group of lbg unit includes at least 1
Individual lbg unit, the pattern of lbg unit is circle, ellipse, triangle, quadrangle, pentagon, hexagon, ten
Font or star.
As the optimal technical scheme of the p-type PERC double-sided solar batteries, when every group of lbg unit only has one
During individual lbg unit, the pattern of lbg unit is the rectangular lbg unit of strip；When every group of lbg
It is in interval type configuration with lbg unit is organized when unit includes 2 or more than 2 lbg units, two neighboring laser
The spacing distance of slotted unit is 0.01-50mm.
As the optimal technical scheme of the p-type PERC double-sided solar batteries, the width in the lbg area is 10-
500μm；The width of alum gate line is 30-550 μm；The width for carrying on the back silver-colored main grid is 0.5-5mm；The radical of the alum gate line is 30-500
Bar；The radical of the silver-colored main grid of the back of the body is 2-8 bars；
The silver-colored main grid of the back of the body is continuous straight grid；Or the silver-colored main grid of the back of the body is set in space segmentation；Or the silver-colored main grid of the back of the body is in
Space segmentation is set, and is connected between each adjacent sectional by connected region.
Correspondingly, the utility model also provides a kind of PERC double-sided solar batteries component, including PERC solar cells
And encapsulating material, the PERC solar cells are p-type PERC double-sided solar batteries described in the utility model.
Correspondingly, the utility model also provides a kind of PERC solar energy systems, including PERC solar cells, the PERC
Solar cell is p-type PERC double-sided solar batteries described in the utility model.
Implement the utility model embodiment, have the advantages that：
P-type PERC double-sided solar batteries described in the utility model are provided with a plurality of alum gate be arrangeding in parallel in cell backside
Line, full aluminum back electric field in existing one side solar cell is not only substituted, realize the function of back side extinction, also served as in back of the body silver electrode
Secondary grid structure be used for conduct electronics.The alum gate line includes being vertically arranged, be arranged in parallel and inclining with carrying on the back silver-colored main grid annexation
Monoclinic phase is handed over, and is formed the network of interconnection, can preferably be collected electronics.The utility model is additionally provided with grid line spine in silicon chip back side
With alum gate housing, the disconnected grid of EL tests and photoelectric transformation efficiency are low caused by solving the problems, such as the disconnected grid of alum gate line.It is new to make this practicality
P-type PERC double-sided solar batteries described in type, silver paste and the dosage of aluminium paste can be saved, reduce production cost, and realize two-sided
Luminous energy is absorbed, the application of solar cell is significantly expanded and improves photoelectric transformation efficiency.
Equally there is above-mentioned advantage using the component and system of the p-type PERC double-sided solar batteries.
Brief description of the drawings
Fig. 1 is a kind of structural representation of p-type PERC double-sided solar batteries of the utility model；
Fig. 2 is a kind of first embodiment structural representation of p-type PERC double-sided solar batteries of the utility model；
Fig. 3 is a kind of second embodiment structural representation of p-type PERC double-sided solar batteries of the utility model；
Fig. 4 is a kind of 3rd embodiment structural representation of p-type PERC double-sided solar batteries of the utility model；
Fig. 5 is that a kind of lbg area first embodiment structure of p-type PERC double-sided solar batteries of the utility model is shown
It is intended to；
Fig. 6 is that a kind of lbg area second embodiment structure of p-type PERC double-sided solar batteries of the utility model is shown
It is intended to；
Fig. 7 is that a kind of lbg area 3rd embodiment structure of p-type PERC double-sided solar batteries of the utility model is shown
It is intended to；
Fig. 8 is that a kind of lbg area fourth embodiment structure of p-type PERC double-sided solar batteries of the utility model is shown
It is intended to；
Fig. 9 is that a kind of example structure of lbg area the 5th of p-type PERC double-sided solar batteries of the utility model is shown
It is intended to；
Figure 10 is that a kind of lbg area sixth embodiment structure of p-type PERC double-sided solar batteries of the utility model is shown
It is intended to；
Figure 11 is that a kind of example structure of lbg area the 7th of p-type PERC double-sided solar batteries of the utility model is shown
It is intended to；
Figure 12 is a kind of fourth embodiment structural representation of p-type PERC double-sided solar batteries of the utility model；
Figure 13 is a kind of 5th example structure schematic diagram of p-type PERC double-sided solar batteries of the utility model；
Figure 14 is a kind of sixth embodiment structural representation of p-type PERC double-sided solar batteries of the utility model.
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.
Existing one side solar cell is provided with the whole back side that full aluminum back electric field is covered in silicon chip at the back side of battery, entirely
The effect of aluminum back electric field is to improve open-circuit voltage Voc and short circuit current Jsc, forces minority carrier away from surface, Shao Shuozai
Flowing sub- recombination rate reduces, so as to improve battery efficiency on the whole.However, because full aluminum back electric field is light tight, therefore, there is full aluminium
The rear surface of solar cell of back of the body electric field can not absorb luminous energy, positive can only absorb luminous energy, and the synthesis photoelectric transformation efficiency of battery is difficult
To be greatly improved.
For above-mentioned technical problem, as shown in figure 1, the utility model provides a kind of p-type PERC double-sided solar batteries, bag
Include the silver-colored main grid 1 of the back of the body, alum gate line 2, back side silicon nitride 3, backside oxide aluminium film 4, P-type silicon 5, N-type emitter stage 6, front side silicon nitride silicon
Film 7 and positive silver electrode 8；The back side silicon nitride 3, backside oxide aluminium film 4, P-type silicon 5, N-type emitter stage 6, front side silicon nitride film
7 and positive silver electrode 8 stack gradually connection from bottom to up；
The back side silicon nitride 3 and backside oxide aluminium film 4 form several lbg areas after lbg, swash
Light slotted zones include alum gate slotted zones, at least 1 group of lbg unit 9 being set in each alum gate slotted zones, and the alum gate line 2 leads to
Alum gate slotted zones are crossed with P-type silicon 5 to be connected；The alum gate line 2 is parallel with lbg unit 9 or is vertically arranged；
The alum gate line 2 includes the first alum gate line 21, the second alum gate line 22 and the 3rd alum gate line 23, the first alum gate line
21 are vertically arranged with carrying on the back silver-colored main grid 1, and the second alum gate line 22 be arranged in parallel with carrying on the back silver-colored main grid 1, the 3rd alum gate line 23 and
Silver-colored main grid 1 is carried on the back with the intersecting connection of certain gradient, 10 ° of 90 ° of ＜ gradients ＜.
The utility model is improved to existing one side PERC solar cells, no longer provided with full aluminum back electric field, but
Become many alum gate lines 2, it is sharp using being opened up in lbg technology overleaf silicon nitride film 3 and backside oxide aluminium film 4
Light slotted zones, lbg area includes the alum gate slotted zones slotted along alum gate line printed wire, and alum gate line 2 is printed on these and put down
On the alum gate slotted zones that row is set, so as to form localized contact with P-type silicon 5, the alum gate line 2 of intensive parallel arrangement can not only rise
To open-circuit voltage Voc and short circuit current Jsc is improved, minority carrier recombination rate is reduced, improves the work of cell photoelectric conversion efficiency
With, the full aluminum back electric field of alternative existing one side battery structure, and alum gate line 2 does not cover the back side of silicon chip, the sun comprehensively
Light can be projected in silicon chip between alum gate line 2, so as to realize that silicon chip back side absorbs luminous energy, greatly improve the opto-electronic conversion of battery
Efficiency.
The direction that alum gate line 2 described in the utility model is set is incomplete same, and straightened portion is set, and part of horizontal is set,
Some is obliquely installed, and thus form complicated network, causes alum gate line 2 to be not only connected with carrying on the back silver-colored main grid 1, also
Intersect connection from the alum gate line 2 of different set-up modes, can preferably collect electronics, farthest reduce alum gate and disconnected grid pair occur
Influence caused by battery performance.
As shown in Fig. 2 two line segments of the first alum gate line 21 and two line segments of the second alum gate line 22 are end to end, then one is formed
The closed pattern of individual square, the square closed pattern can be located between the adjacent two silver-colored main grids 1 of the back of the body, can also be across one
Bar or some silver-colored main grids 1 of the back of the body.
The line segment of the 3rd alum gate line 23 ending of some articles of differing tilt angles connects, and can form triangle, quadrangle, five sides
The closed patterns such as shape, hexagon, the closed pattern can be located between the adjacent two silver-colored main grids 1 of the back of the body, can also across one or
Some silver-colored main grids 1 of the back of the body.
The pattern of first alum gate line 21, the second alum gate line 22 and the 3rd alum gate line 23 can also be continuous straight line or multiple
The dotted line of line segment composition, extend to four sides of silicon chip.
Preferably, the radical of the alum gate line 2 is corresponding with the number of alum gate slotted zones, is all 30-500 bars, more preferably, institute
The radical for stating alum gate line 2 is 80-220 bars.The alum gate line 2 can be straight line or shaped form, arc, waveform, folding
Linear etc., alum gate slotted zones shape is corresponding with alum gate line 2, and embodiments thereof is not limited to the utility model illustrated embodiment.
It should be noted that the lbg unit 9 in alum gate slotted zones can be parallel with alum gate line 2, can also be hung down with alum gate line 2
Directly.
Silicon chip back side is illustrated in figure 2, alum gate line 2 is vertical setting with carrying on the back silver-colored main grid 1, wherein it is continuous to carry on the back silver-colored main grid 1
Straight grid, because back side silicon nitride 3 and backside oxide aluminium film 4 are provided with alum gate slotted zones, when printing aluminium paste forms alum gate line 2, aluminium
Slurry filling is to alum gate slotted zones so that alum gate line 2 forms localized contact with P-type silicon 5, can be by electric transmission to alum gate line 2, with aluminium
The intersecting silver-colored main grid 1 of the back of the body of grid line 2 then collects the electronics on alum gate line 2, it follows that alum gate line 2 described in the utility model plays
Open-circuit voltage Voc and short circuit current Jsc is improved, reduces minority carrier recombination rate, and the effect of transmission electronics, it is alternative existing
There is full aluminum back electric field in one side solar cell, not only reduce silver paste and the dosage of aluminium paste, reduce production cost, and realize double
Face absorbs luminous energy, is significantly expanded the application of solar cell and improves photoelectric transformation efficiency.
The silver-colored main grid 1 of the back of the body described in the utility model can also be in interval point in addition to being illustrated in figure 2 the setting of continuous straight grid
Section is set, as shown in Figure 3.It can also be in that space segmentation is set, and be connected between each adjacent sectional by connected region, such as Fig. 4 institutes
Show.The connected region can be the combination of several figures of triangle, quadrangle, pentagon, circle, arc or more, connection
Region at least one, the size of each connected region is identical or different, and the width of connected region is 0.01-4.5mm.Carry on the back silver-colored main grid
Both ends be shaped as tip, one kind or combination of two-wire and single line.
It should be noted that when setting 2 groups or more than 2 groups lbg units 9 in each lbg area, each group swashs
Light slotted unit 9 be arranged in parallel, and the spacing between two adjacent groups lbg unit 9 is 5-480 μm.
Every group of lbg unit 9 includes at least one lbg unit 9, the pattern of lbg unit 9 for it is circular,
Ellipse, triangle, quadrangle, pentagon, hexagon, cross or star.
Further illustrated below by instantiation：
1. the pattern identical situation of the lbg unit 9 in each lbg area：
1.1 is identical with the group pattern of lbg unit 9
1.1.1 such as Fig. 5, each lbg area are provided with 1 group of lbg unit 9, and lbg unit 9 is continuous bar
Shape rectangle, the length of lbg unit 9 are identical with alum gate line length；Or the length of lbg unit 9 is than alum gate line length
Spend short 0.01-5mm；Or the length of lbg unit 9 is longer 0.01-5mm than alum gate line length.
1.1.2 such as Fig. 6, each lbg area is provided with 2 groups or more than 2 groups lbg units 9（Example is 3 in figure
Group）, each group lbg unit be arranged in parallel, and the spacing between two adjacent groups lbg unit is 5-480 μm.Lbg
Unit 9 is continuous strip rectangle, and the length of lbg unit 9 is identical with alum gate line length；Or lbg unit 9
Length is shorter 0.01-5mm than alum gate line length；Or the length of lbg unit 9 is longer 0.01-5mm than alum gate line length.
1.1.3 such as Fig. 7, each lbg area are provided with 1 group of lbg unit 9, and lbg unit 9 prolongs along alum gate line
Direction compartment arrangement is stretched, can be circle, ellipse, triangle, quadrangle, pentagon, six with the pattern of lbg unit 9 is organized
Side shape, cross or star, example is rectangle in figure.
1.1.4 such as Fig. 8, each lbg area is provided with 2 groups or more than 2 groups lbg units 9（Example is 3 in figure
Group）, each group lbg unit be arranged in parallel, and the spacing between two adjacent groups lbg unit is 5-480 μm.Lbg
Unit 9 is arranged by compartment, and the pattern of lbg unit 9 can be circle, ellipse, triangle, quadrangle, pentagon, six sides
Shape, cross or star, example is rectangle in figure.
1.2 differ with the pattern of group lbg unit 9
1.2.1 such as Fig. 9, each lbg area are provided with 1 group of lbg unit 9, and lbg unit 9 is arranged by compartment
Row, the pattern of lbg unit 9 can be circle, ellipse, triangle, quadrangle, pentagon, hexagon, cross or star,
The pattern of lbg unit 9 is incomplete same.
1.2.2 such as Figure 10, each lbg area is provided with 2 groups or more than 2 groups lbg units 9, lbg unit 9
Arranged along alum gate line bearing of trend compartment, the pattern of lbg unit 9 can be continuous long line segment, circle, ellipse, triangle
Shape, quadrangle, pentagon, hexagon, cross or star, the lbg unit 9 that difference is organized in lbg unit 9 arrange
Partly different or all different, example is the whole different situations of different groups of lbg units 9 in figure.
2. the incomplete same situation of the pattern of the lbg unit 9 in different lbg areas：
Single lbg area is taken to be combined in above-mentioned Fig. 5-Figure 10, such as Figure 11, or except lbg unit 9 to connect
Outside continuous long line segment situation, with one of which situation to different lbgs in 1.1.1-1.1.4 and 1.2.1-1.2.2 situations
Area carries out different arrangements.
It should be noted that the spacing distance under different situations between lbg area can be with identical above, also can be different.
Spacing distance with the two neighboring lbg unit 9 of group lbg unit 9 is 0.01-50mm, with group lbg list
Spacing distance between member 9 can be with identical, also can be different.
The width in lbg area described in the utility model is 10-500 μm；Alum gate line 2 below lbg area
Width be more than the width in lbg area, the width of alum gate line 2 is 30-550 μm.Selected in the above-mentioned width of alum gate line 2 larger
Such as 500 μm of numerical value, and multigroup lbg area can be located at same by the selection of lbg sector width side by side compared with such as 40 μm of fractional value
On alum gate line 2, ensure that alum gate line 2 and P-type silicon 5 there are enough contacts area.
In addition, in printing process, because the viscosity of aluminium paste is larger, the line width of half tone is again narrow, can occur aluminium once in a while
Grid line 2 breaks the situations of grid.Alum gate line 2 break grid can cause EL test image occur black break grid, meanwhile, alum gate line 2 breaks grid also
The photoelectric transformation efficiency of battery can be influenceed, is unfavorable for lifting battery quality and performance.
Therefore, such as Figure 12-14, the utility model backplate is additionally provided with grid line spine 10 and/or alum gate housing 11, grid line
Spine 10 intersects with alum gate line 2, and optimal scheme is that grid line spine 10 intersects vertically with alum gate line 2.The grid line spine 10
Pattern is the dotted line that a continuous straight line or multiple line segments form；The radical of the grid line spine 10 is 1-20 bars；The grid
Line spine 10 is made up of silver paste, and its width is 30-60 microns；Or, the grid line spine 10 is made up of aluminium paste, its width is 50-
500 microns.
The alum gate housing 11 is cubic frame, and end points of the alum gate housing 11 respectively with alum gate line and the silver-colored main grid of the back of the body is connected；
The width of each edge frame of the alum gate housing 11 is 30-1000 μm.Alum gate housing 11, can because it is shaped as cubic frame
It is connected with the alum gate line 2 in horizontal direction, can be also connected with the back of the body silver main grid 1 on vertical direction.
When the disconnected grid of the appearance of alum gate line 2 can not be by electric transmission to when carrying on the back silver-colored main grid 1, electronics can pass through grid line spine 10 or aluminium
Grid housing 11 is transferred to other alum gate lines 2, then by other alum gate lines 2 by electric transmission to carrying on the back on silver-colored main grid 1；Or electronics can
It is directly transferred to carry on the back on silver-colored main grid 1 by alum gate housing 11, breaks so as to solve alum gate line 2 caused by grid the disconnected grid of EL tests and photoelectricity
The problem of conversion efficiency is low.
Overleaf silicon nitride film and backside oxide aluminium film correspond to alum gate housing 11, the position of grid line spine 10 is additionally provided with aluminium frame
Slotted zones and spine slotted zones, the alum gate housing 11 are connected by aluminium frame slotted zones with P-type silicon 5, and the grid line spine 10 is logical
Spine slotted zones are crossed with P-type silicon 5 to be connected.The arrangement of lbg unit is slotted with alum gate in aluminium frame slotted zones and spine slotted zones
The arrangement of lbg unit is identical in area, and here is omitted.
It should be noted that whether aluminium frame slotted zones and spine slotted zones are set depending on visual actual conditions.
To sum up, p-type PERC double-sided solar batteries described in the utility model, which change, is provided with a plurality of alum gate line be arrangeding in parallel,
Not only substitute full aluminum back electric field in existing one side solar cell and realize back side extinction, be additionally operable to carry on the back the secondary grid structure in silver electrode
As conduction electronics.The alum gate line includes being vertically arranged, be arranged in parallel and tilting intersecting with carrying on the back silver-colored main grid annexation, is formed
The network of interconnection, it can preferably collect electronics.The utility model is additionally provided with grid line spine and alum gate housing in silicon chip back side,
The disconnected grid of EL tests and photoelectric transformation efficiency are low caused by solving the problems, such as the disconnected grid of alum gate line.Make p-type described in the utility model
PERC double-sided solar batteries, silver paste and the dosage of aluminium paste can be saved, reduce production cost, and realize two-sided absorption luminous energy,
It is significantly expanded the application of solar cell and improves photoelectric transformation efficiency.
Accordingly, the utility model is also disclosed a kind of p-type PERC double-sided solar battery components, including p-type PERC two-sided
Solar cell and encapsulating material, the PERC solar cells are any of the above-described p-type PERC double-sided solar batteries.Specifically
, as an embodiment of p-type PERC double-sided solar battery components, its height being from top to bottom sequentially connected thoroughly safety glass,
Ethylene-vinyl acetate copolymer EVA, PERC solar cell, ethylene-vinyl acetate copolymer EVA and high safety glass group thoroughly
Into.
Accordingly, a kind of p-type PERC double-sided solar systems, including the two-sided sun of p-type PERC is also disclosed in the utility model
Energy battery, the PERC solar cells are any of the above-described p-type PERC double-sided solar batteries.As PERC solar energy systems
A preferred embodiment, including PERC solar cells, batteries, charging-discharging controller inverter, AC power distribution cabinet/AC distribution panel and too
Positive tracking control system.Wherein, PERC solar energy systems can be provided with batteries, charging-discharging controller inverter, can also
Batteries, charging-discharging controller inverter are not set, and those skilled in the art can be configured according to being actually needed.
It should be noted that in PERC solar cell modules, PERC solar energy systems, except the two-sided sun of p-type PERC
Part outside energy battery, is designed with reference to prior art.
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)
- A kind of 1. p-type PERC double-sided solar batteries, it is characterised in that including carry on the back silver-colored main grid, alum gate line, back side silicon nitride, Backside oxide aluminium film, P-type silicon, N-type emitter stage, front side silicon nitride film and positive silver electrode；The back side silicon nitride, backside oxide Aluminium film, P-type silicon, N-type emitter stage, front side silicon nitride film and positive silver electrode stack gradually connection from bottom to up；The back side silicon nitride and backside oxide aluminium film form several lbg areas, lbg after lbg Area includes alum gate slotted zones, setting at least 1 group of lbg unit in each alum gate slotted zones, the alum gate line is opened by alum gate Groove area is connected with P-type silicon；The alum gate line is parallel with lbg unit or is vertically arranged；The alum gate line includes the first alum gate line, the second alum gate line and the 3rd alum gate line, and the first alum gate line is with carrying on the back silver-colored main grid It is vertically arranged, the second alum gate line be arranged in parallel with carrying on the back silver-colored main grid, and the 3rd alum gate line is with the silver-colored main grid of the back of the body necessarily to tilt The intersecting connection of degree, 10 ° of 90 ° of ＜ gradients ＜.
- 2. p-type PERC double-sided solar batteries as claimed in claim 1, it is characterised in that also including grid line spine, grid line spine It is arranged on alum gate line, the grid line spine is connected with alum gate line；The pattern of the grid line spine is the dotted line that a continuous straight line or multiple line segments form；The radical of the grid line spine is 1-20 bars；The grid line spine is made up of silver paste, and its width is 30-60 microns；Or, the grid line spine is made up of aluminium paste, its width For 50-500 microns.
- 3. p-type PERC double-sided solar batteries as claimed in claim 2, it is characterised in that the lbg area also includes edge The spine slotted zones of grid line spine printed wire fluting, setting at least 1 group of lbg unit, described in each spine slotted zones Grid line spine is connected by spine slotted zones with P-type silicon.
- 4. p-type PERC double-sided solar batteries as claimed in claim 1, it is characterised in that also including alum gate housing, the alum gate Housing is cubic frame, and end points of the alum gate housing respectively with alum gate line and the silver-colored main grid of the back of the body is connected；The each edge of the alum gate housing The width of frame is 30-1000 μm.
- 5. p-type PERC double-sided solar batteries as claimed in claim 4, it is characterised in that the lbg area also includes edge The aluminium frame slotted zones of alum gate housing printed wire fluting, setting at least 1 group of lbg unit, described in each aluminium frame slotted zones Alum gate housing is connected by aluminium frame slotted zones with P-type silicon.
- 6. p-type PERC double-sided solar batteries as claimed in claim 1, it is characterised in that every group of lbg unit is included extremely Few 1 lbg unit, the pattern of lbg unit is circle, ellipse, triangle, quadrangle, pentagon, six sides Shape, cross or star.
- 7. p-type PERC double-sided solar batteries as claimed in claim 6, it is characterised in that when every group of lbg unit only has During one lbg unit, the pattern of lbg unit is the rectangular lbg unit of strip；When every group of laser is opened It is in interval type configuration with lbg unit is organized when groove unit includes 2 or more than 2 lbg units, it is two neighboring to swash The spacing distance of light slotted unit is 0.01-50mm.
- 8. p-type PERC double-sided solar batteries as claimed in claim 1, it is characterised in that the width in the lbg area is 10-500μm；The width of alum gate line is 30-550 μm；The width for carrying on the back silver-colored main grid is 0.5-5mm；The radical of the alum gate line is 30- 500；The radical of the silver-colored main grid of the back of the body is 2-8 bars；The silver-colored main grid of the back of the body is continuous straight grid；Or the silver-colored main grid of the back of the body is set in space segmentation；Or the silver-colored main grid of the back of the body is in interval Subsection setup, connected by connected region between each adjacent sectional, the both ends for carrying on the back silver-colored main grid are shaped as tip, two-wire and single line A kind of or combination.
- 9. a kind of PERC solar cell modules, it is characterised in that including PERC solar cells and encapsulating material, its feature exists In the PERC solar cells are the p-type PERC double-sided solar batteries described in claim any one of 1-8.
- 10. a kind of PERC solar energy systems, including PERC solar cells, it is characterised in that the PERC solar cells are P-type PERC double-sided solar batteries described in claim any one of 1-8.
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| CN201720203385.0U CN206628485U (en) | 2017-03-03 | 2017-03-03 | P-type PERC double-sided solar batteries, component and system |
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| CN201720203385.0U CN206628485U (en) | 2017-03-03 | 2017-03-03 | P-type PERC double-sided solar batteries, component and system |
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| CN206628485U true CN206628485U (en) | 2017-11-10 |
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| Country | Link |
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- 2017-03-03 CN CN201720203385.0U patent/CN206628485U/en active Active
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Address after: 322009 Zhejiang city in Jinhua Province town of Yiwu City, Su Fuk Road No. 126 Co-patentee after: Guangdong Asahi Polytron Technologies Inc Patentee after: Zhejiang love Solar Energy Technology Co., Ltd. Address before: 322009 Zhejiang city in Jinhua Province town of Yiwu City, Su Fuk Road No. 126 Co-patentee before: Guangdong Aiko Solar Energy Technology Co., Ltd. Patentee before: Zhejiang love Solar Energy Technology Co., Ltd. |
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