CN109545862A - A kind of solar battery and preparation method thereof - Google Patents
A kind of solar battery and preparation method thereof Download PDFInfo
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- CN109545862A CN109545862A CN201811167604.XA CN201811167604A CN109545862A CN 109545862 A CN109545862 A CN 109545862A CN 201811167604 A CN201811167604 A CN 201811167604A CN 109545862 A CN109545862 A CN 109545862A
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- 238000002360 preparation method Methods 0.000 title description 5
- 238000007639 printing Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 18
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 230000000903 blocking effect Effects 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022433—Particular geometry of the grid contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1804—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic System
-
- 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
-
- 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
Abstract
The invention discloses a kind of solar battery, the solar battery includes surface grid line；The frame of the surface grid line is waveform, and any one section of line segment is curved section on the frame.The present invention is by being changed to the design of waveform curved section for frame S broken line undaform in the prior art design, preferably avoid the intersection point of steel wire, it greatly reduces when printing in the prior art, the problem of frame line forms angle at turning and is easy network blocking, keeps slurry difficult in lower ink, causes disconnected grid, empty print, keep the surface grid line of solar battery more complete, it compares and the prior art, reduces the series resistance of solar battery, improve the efficiency of solar battery.Invention also provides a kind of production methods of solar battery with above-mentioned beneficial effect.
Description
Technical field
The present invention relates to area of solar cell, more particularly to a kind of solar battery and preparation method thereof.
Background technique
With the development of society, more and more people start sight to be put on sustainable energy, in a variety of sustainable energy
In source, since solar energy is more stable, no pollution, therefore from invention initial stage just by global attention, and especially by wide
The favor of big practitioner, into after 21 century, more and more solar cell power generation technologies are developed, however, existing
There are problem, i.e., the frame S broken line undaforms of existing surface grid line to design in printing process for the pattern of the surface grid line of technology,
Frame lines cause the series resistance of solar battery entirety to increase, in turn the phenomenon that turning is easy to appear disconnected grid, empty print
Decline the efficiency of solar battery.
Summary of the invention
The object of the present invention is to provide a kind of solar batteries and preparation method thereof, to solve printing process in the prior art
The frame of middle surface grid line is easy to appear disconnected grid, empty print at turning, and the series resistance of solar battery entirety is caused to increase, into
And the problem of declining the efficiency of solar battery.
In order to solve the above technical problems, the present invention provides a kind of solar battery, the solar battery includes surface grid
Line；
The frame of the surface grid line is waveform, and any one section of line segment is curved section on the frame.
Optionally, in the solar battery, the range of the distance between two adjacent peaks of the frame is 250 micro-
Rice is to 270 microns, including endpoint value.
Optionally, in the solar battery, the range of the width of the frame is 30 microns to 40 microns, including end
Point value.
Optionally, in the solar battery, the solar battery includes time main grid, and the secondary main grid is waveform
Secondary main grid；Wherein, the range of the distance between two adjacent wave crests of the waveform time main grid is 150 microns to 170 microns,
Including endpoint value.
Optionally, in the solar battery, the range of the width of the secondary main grid is 20 microns to 30 microns, including
Endpoint value.
Optionally, in the solar battery, the stripe shape of the stripe shape of the frame and the secondary main grid is full
The following formula of foot:
Wherein, for x expression stripe shape in the plane along x-axis with a distance from origin, y indicates stripe shape in the plane along y
For axis with a distance from origin, A is the amplitude of the stripe shape；Distance of the λ between described two adjacent peaks.
Optionally, in the solar battery, the surface grid line of the solar battery includes main grid, and the main grid is
Two long sides are wavy main grid.
Optionally, in the solar battery, in two long sides of the main grid between two adjacent peaks of any bar
The range of distance be 125 microns to 135 microns, including endpoint value；The range of the spacing of two long sides of the main grid is
0.65 millimeter to 0.75 millimeter, including endpoint value.
Optionally, in the solar battery, the stripe shape of two long sides of the main grid meets following formula:
Wherein, x indicate stripe shape in the plane along x-axis with a distance from origin, y1Indicate the shape of the first long side flat
On face along y-axis with a distance from origin, y2Indicate the shape of the second long side in the plane along y-axis with a distance from origin, A is the side
The amplitude of the stripe shape of edge line, λ are the distance between two adjacent peaks of the long side；M is the spacing of two long sides,
Also referred to as design wave is wide.
The present invention also provides a kind of sun by the production method of battery, comprising:
In silicon crystal substrate surface, doped layer is set；
By printing surface grid line in the silicon crystal substrate two sides through overdoping without net netting version, the solar-electricity is obtained
Pond；Wherein, it is described without net netting version include wavy frame pattern, any one section of line segment is song on the frame pattern
Line segment.
Solar battery provided by the present invention, the solar battery include surface grid line；The side of the surface grid line
Frame is waveform, and any one section of line segment is curved section on the frame.The present invention is by rolling over frame S in the prior art
The design of line undaform is changed to the design of waveform curved section, preferably avoids the intersection point of steel wire, greatly reduces in existing skill
When printing in art, frame line keeps slurry difficult in lower ink, disconnected grid, void is caused to print in the easy network blocking of turning formation angle
Problem keeps the surface grid line of solar battery more complete, that is, compares and the prior art, reduces the series electrical of solar battery
Resistance, improves the efficiency of solar battery.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram of the frame of surface grid line provided by a kind of specific embodiment of the invention；
Fig. 2 is the structural schematic diagram of the secondary main grid of surface grid line provided by another specific embodiment of the invention；
Fig. 3 is the structural schematic diagram of the main grid of surface grid line provided by another specific embodiment of the invention；
Fig. 4 is the structural representation of surface grid line provided by another specific embodiment of the invention overlooked under visual angle
Figure；
Fig. 5 is that the secondary main grid of surface grid line provided by another specific embodiment of the invention and frame lines correspond to
Shape image；
Fig. 6 is the corresponding shape image of main grid of surface grid line provided by another specific embodiment of the invention；
Fig. 7 is the process signal of the production method for the solar battery that another specific embodiment of the invention provides
Figure.
Specific embodiment
It to avoid ambiguity, need to state in advance, heretofore described secondary main grid, be the anti-electroluminescent of solar battery
It tests disconnected grid and shunts grid.
Solar battery technology has attracted the concern of numerous personnel as the pollution-free power-generating technology favored at present,
But current solar battery, due to its surface, grid line is easy occur the phenomenon that disconnected grid, empty print in printing, leads to the finished product sun
Energy battery surface grid line part is disabled, and electric current cannot pass through, that is, increase the series resistance of battery itself, battery is made to exist
Itself consumes more power in real work, influences the efficiency of battery.
The frame of the surface grid line of solar battery in the prior art use S broken line undulated design, i.e., waveform by
Straight line is constituted, and is only on the corner connected with camber line, and this design can avoid frame line from forming folder in turning to a certain extent
Angle is easy network blocking, but effect need further to be promoted.
In addition, the main grid of the surface grid line of solar battery in the prior art is designed using edge line, due to winding displacement
Difficulty, main grid edge are easy to appear the phenomenon that causing main grid to be broken by steel wire detent, due to main grid be broken, make electric current collection by
Resistance, the whole series resistance of solar battery obviously rise.
In addition, the secondary main grid of the surface grid line of solar battery in the prior art uses linear design, set using straight line
Meter secondary main grid print when, position once appears in the intersection point of the steel wire netting wire, due to steel wire intersection point area coverage compared with
Greatly, the case where slurry is stopped by steel wire intersection point when easily occurring in printing, and lower leakage has some setbacks, finally obtained secondary main grid is caused to go out
Now break grid, shows the phenomenon that blacking in electroluminescent test, so that electric current collection is obstructed, the whole series electrical of solar battery
Resistance is obvious to be risen.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Core of the invention is to provide a kind of solar battery, the structural representation of the surface grid line of specific embodiment one
Figure is as shown in Figure 1, comprising:
The solar battery includes surface grid line；
The frame 1 of the surface grid line is waveform, and any one section of line segment is curved section on the frame 1.
Above-mentioned solar battery includes monocrystalline silicon battery and polycrystal silicon cell.
It is significant to note that by theory deduction and practice examining, it is best to achieve the effect that, above-mentioned frame 1
Distance range between two adjacent peaks is 250 microns to 270 microns, including endpoint value, such as 250.0 microns, 260.0 microns or
Any of 270.0 microns.
Above-mentioned wave crest refers in the shape of frame 1, using an amplitude direction of wave-like as positive direction, in the pros
The point all higher than the point of its two sides upwards.
It should be noted that selecting a value in the distance range between above-mentioned adjacent peaks as real to guarantee effect
After the use value of border, maximum allowable there are 10 microns of errors, for example, if selecting the distance between above-mentioned 1 adjacent peaks of frame
It is 260.0 microns, then the frame line of the surface grid line of this solar battery, the maximum distance between adjacent peaks is no more than
270.0 microns, minimum distance cannot be less than 250.0 microns.
It further notes that, best to achieve the effect that by theory deduction and practice examining, above-mentioned frame 1
Width range be 30 microns to 40 microns, including endpoint value, such as any of 30.0 microns, 35.0 microns or 40.0 microns.
Equally, to guarantee effect, after a selected value is used as actual use value in the width range of above-mentioned frame 1, most
The error of big 2 microns of permission, for example, if selecting the width of above-mentioned frame 1 is 35.0 microns, the table of this solar battery
The width of the frame line of face grid line, for the widest part no more than 37.0 microns, most narrow place cannot be less than 33.0 microns.
Solar battery provided by the present invention, the solar battery include surface grid line；The side of the surface grid line
Frame 1 is waveform, and any one section of line segment is curved section on the frame 1.The present invention is by by frame S in the prior art
The design of broken line undaform is changed to the design of waveform curved section, preferably avoids the intersection point of steel wire, greatly reduces existing
When printing in technology, frame line forms angle at turning and is easy network blocking, keeps slurry difficult in lower ink, causes disconnected grid, empty print
The problem of, keep the surface grid line of solar battery more complete, that is, compare and the prior art, reduces the series electrical of solar battery
Resistance, improves the efficiency of solar battery.
On the basis of above-mentioned specific embodiment, further to the secondary main grid 2 of the surface grid line of above-mentioned solar battery
It improves, obtains specific embodiment two, the structural schematic diagram of the secondary main grid 2 of surface grid line is as shown in Figure 2, comprising:
The solar battery includes surface grid line；
The frame 1 of the surface grid line is waveform, and any one section of line segment is curved section on the frame 1；
The solar battery includes time main grid 2, and the secondary main grid 2 is waveform time main grid 2.
The difference of present embodiment and above-mentioned specific embodiment is that present embodiment is further to above-mentioned
The shape of the secondary main grid 2 of solar battery limits, and other structures are identical as above-mentioned specific embodiment, no longer opens up herein
It opens and repeats.
It should be noted that pass through theory deduction and practice examining, and it is best to achieve the effect that, the two of above-mentioned secondary main grid 2
Distance range between a adjacent peaks is 150 microns to 170 microns, including endpoint value, such as 150.0 microns, 160.0 microns or
Any of 170.0 microns.
The wave crest of secondary main grid 2 defines the definition for please referring to the wave crest of one frame 1 of specific embodiment, and details are not described herein.
It should be noted that selecting a value in the distance range between above-mentioned adjacent peaks as real to guarantee effect
After the use value of border, maximum allowable there are 10 microns of errors, for example, if between above-mentioned secondary 2 adjacent peaks of main grid of selection away from
From being 160.0 microns, then 2 shape of secondary main grid of the surface grid line of this solar battery, the maximum distance between adjacent peaks cannot
More than 170.0 microns, minimum distance cannot be less than 150.0 microns.
Further, best to achieve the effect that by theory deduction and practice examining, the width of above-mentioned secondary main grid 2
Range is 20 microns to 30 microns, including endpoint value, such as any of 20.0 microns, 25.0 microns or 30.0 microns.
Equally, to guarantee effect, a value is selected in the range of the width of above-mentioned secondary main grid 2 and is used as actual use value
Afterwards, maximum allowable 2 microns of error exists, for example, this is too if selecting the width of above-mentioned secondary main grid 2 is 25.0 microns
The width maximum of the secondary main grid 2 of the surface grid line of positive energy battery cannot be greater than 27.0 microns, cannot be less than at width minimum
23.0 microns.
Present embodiment uses wavy secondary main grid 2 and designs, and can largely avoid the steel of steel wire
Silk intersection point, there is a situation where network blockings to be greatly reduced when so that black under slurry, efficiently solves and a little asks to disconnected grid are shone with what is blacked
Topic, is conducive to the collection of electric current, reduces the series resistance of solar battery.
On the basis of above-mentioned specific embodiment, further to the main grid 3 of the surface grid line of above-mentioned solar battery into
Row improves, and obtains specific embodiment three, the structural schematic diagram of the main grid 3 of surface grid line is as shown in Figure 3, comprising:
The solar battery includes surface grid line；
The frame 1 of the surface grid line is waveform, and any one section of line segment is curved section on the frame 1；
The solar battery includes time main grid 2, and the secondary main grid 2 is waveform time main grid 2；
The surface grid line of the solar battery includes main grid 3, and the main grid 3 is that two long sides are wavy main grid
3。
The difference of present embodiment and above-mentioned specific embodiment is that present embodiment is further to above-mentioned
The shape of the main grid 3 of solar battery limits, and other structures are identical as above-mentioned specific embodiment, not reinflated herein
It repeats.
It should be noted that pass through theory deduction and practice examining, and it is best to achieve the effect that, two of above-mentioned main grid 3
The range of distance in long side between two adjacent peaks of any bar is 125 microns to 135 microns, including endpoint value, such as 125.0
Any of micron, 130.0 microns or 135.0 microns.
The definition of the wave crest of any bar please refers to the wave of one frame 1 of specific embodiment in two long sides of above-mentioned main grid 3
The definition at peak, details are not described herein.
It should be noted that selecting a value in the distance range between above-mentioned adjacent peaks as real to guarantee effect
After the use value of border, maximum allowable there are 10 microns of errors, for example, if selecting any in two long sides of above-mentioned main grid 3
Distance between the adjacent peaks of item is 135.0 microns, then appoints in two long sides of the main grid 3 of the surface grid line of this solar battery
One shape, for the maximum distance between adjacent peaks no more than 145.0 microns, minimum distance cannot be less than 125.0 microns.
It further notes that, best to achieve the effect that by theory deduction and practice examining, above-mentioned main grid 3
The ranges of spacing of two long sides be 0.65 millimeter to 0.75 millimeter, including endpoint value, such as 0.650 millimeter, 0.700 millimeter or
Any of 0.750 millimeter.
Equally, to guarantee effect, selecting a value in the spacing range of two long sides of above-mentioned main grid 3 and be used as actually makes
After value, maximum allowable 0.03 millimeter of error, for example, if selecting the spacing of two long sides of above-mentioned main grid 3 is 0.700
Millimeter, then the spacing maximum of two long sides of the main grid 3 of the surface grid line of this solar battery cannot be greater than 0.730 millimeter,
It minimum place cannot be less than 0.670 millimeter.
Without any connection between the waveform of two long sides of above-mentioned main grid 3, above-mentioned two long side can be asymmetric.
Above-mentioned main grid 3 can be solid construction, can also be part hollow structure, the long side of hollow space is above-mentioned wave
Shape.
The straight line of two long sides of the main grid 3 of above-mentioned surface grid line from the prior art is modified to by this specific embodiment
Wave, there is a situation where network blockings to be greatly reduced when so that black under slurry in printing process, improve in halftone manufacturing process because
Main grid 3 caused by steel wire detent prints crack, improves the final printing quality of surface grid line, reduces solar battery
Series resistance.
A kind of top view of the surface grid line for solar battery that present embodiment provides is as shown in Figure 4.
On the basis of above-mentioned specific embodiment, further to the secondary main grid 2 of the surface grid line of above-mentioned solar battery
It is improved with frame 1, obtains specific embodiment four, the secondary main grid 2 of surface grid line and the stripe shape schematic diagram of frame 1
As shown in Figure 5, comprising:
The solar battery includes surface grid line；
The frame 1 of the surface grid line is waveform, and any one section of line segment is curved section on the frame 1；
The solar battery includes time main grid 2, and the secondary main grid 2 is waveform time main grid 2；
The surface grid line of the solar battery includes main grid 3, and the main grid 3 is that two long sides are wavy main grid
3
The stripe shape of the stripe shape of the frame 1 and the secondary main grid 2 meets following formula:
Wherein, for x expression stripe shape in the plane along x-axis with a distance from origin, y indicates stripe shape in the plane along y
For axis with a distance from origin, A is the amplitude of the stripe shape；Distance of the λ between described two adjacent peaks.
The difference of present embodiment and above-mentioned specific embodiment is that present embodiment is further to above-mentioned
The secondary main grid 2 of solar battery and the stripe shape of frame 1 limit, other structures with above-mentioned specific embodiment phase
Together, not reinflated herein to repeat.
Two mutually perpendicular directions therefore can be Fig. 5 in the plane for above-mentioned surface grid line for above-mentioned x-axis and y-axis
In trigonometric function image regard as overlook visual angle under above-mentioned frame 1 or secondary main grid 2 shape.
Present embodiment uses surface grid line of the wave of trigonometric function shape as above-mentioned solar battery
Secondary main grid 2 and frame 1 stripe shape, make finally obtained above-mentioned secondary main grid 2 and frame 1 more evenly, and using this is specific
The trigonometric function shape that embodiment provides prints surface grid line, and calculation amount is small, and parameter input is more convenient.
On the basis of above-mentioned specific embodiment, further to the main grid 3 of the surface grid line of above-mentioned solar battery into
Row improves, and obtains specific embodiment five, the stripe shape schematic diagram of the main grid 3 of surface grid line is as shown in Figure 6, comprising:
The solar battery includes surface grid line；
The frame 1 of the surface grid line is waveform, and any one section of line segment is curved section on the frame 1；
The solar battery includes time main grid 2, and the secondary main grid 2 is waveform time main grid 2；
The surface grid line of the solar battery includes main grid 3, and the main grid 3 is that two long sides are wavy main grid
3
The stripe shape of the stripe shape of the frame 1 and the secondary main grid 2 meets following formula:
Wherein, for x expression stripe shape in the plane along x-axis with a distance from origin, y indicates stripe shape in the plane along y
For axis with a distance from origin, A is the amplitude of the stripe shape；Distance of the λ between described two adjacent peaks；
The stripe shape of two long sides of the main grid 3 meets following formula:
Wherein, x indicate stripe shape in the plane along x-axis with a distance from origin, y1Indicate the shape of the first long side flat
On face along y-axis with a distance from origin, y2Indicate the shape of the second long side in the plane along y-axis with a distance from origin, A is the side
The amplitude of the stripe shape of edge line, λ are the distance between two adjacent peaks of the long side；M is the spacing of two long sides,
Also referred to as design wave is wide.
The difference of present embodiment and above-mentioned specific embodiment is that present embodiment is further to above-mentioned
The stripe shape of the main grid 3 of solar battery limits, and other structures are identical as above-mentioned specific embodiment, herein no longer
Expansion repeats.
Two mutually perpendicular directions therefore can be Fig. 6 in the plane for above-mentioned surface grid line for above-mentioned x-axis and y-axis
In trigonometric function image regard as overlook visual angle under above-mentioned main grid 3 shape, it is significant to note that, in practical application
In, the distance M between two long sides of above-mentioned main grid 3 is much larger than the amplitude of above-mentioned long side itself.
Further, the phase of above-mentioned two long sides can be different, are expressed as follows with formula:
Wherein, b indicates the phase difference of the shape of an above-mentioned long side and the shape of another long side.
Present embodiment uses surface grid line of the wave of trigonometric function shape as above-mentioned solar battery
Main grid 3 long side stripe shape, make the long side of finally obtained above-mentioned main grid 3 more evenly, and use this specific embodiment party
The trigonometric function shape that formula provides prints surface grid line, and calculation amount is small, and parameter input is more convenient.
The present invention also provides a kind of sun by the production method of battery, referred to as specific embodiment six, steps flow chart
Figure as shown in fig. 7, comprises:
Step S101: doped layer is set in silicon crystal substrate surface；
Step S102: by printing surface grid line in the silicon crystal substrate two sides through overdoping without net netting version, institute is obtained
State solar battery；Wherein, it is described without net netting version include wavy frame pattern, any one section on the frame pattern
Line segment is curved section.
It is above-mentioned without net netting version include 380 mesh, 400 mesh, 430 mesh, 480 mesh and more high mesh number screen cloth, it is above-mentioned without net tie
The mesh design requirement of halftone is controlled in 1 lattice to 3 grid mesh.
The present embodiment is suitable for 101 lines, 106 lines, 110 lines, 112 lines and more close grid designs.
Since the surface grid line of above-mentioned solar battery is by above-mentioned without the obtained surface grid line of net netting version printing, because
This frame 1 of surface grid line obtained by the above-mentioned frame pattern without in net netting version, any one section of line segment is on frame 1
Curved section.
Further, above-mentioned without net netting version may include waveform time main grid pattern.
Further, above-mentioned without net netting version may include two long sides is wavy main grid pattern.
Further, the stripe shape of above-mentioned frame pattern and above-mentioned waveform time main grid pattern meets following formula:
Wherein, for x expression stripe shape in the plane along x-axis with a distance from origin, y indicates stripe shape in the plane along y
For axis with a distance from origin, A is the amplitude of the stripe shape；Distance of the λ between described two adjacent peaks.
Further, above-mentioned two long sides are that two long side stripe shapes satisfaction of wavy main grid pattern is as follows
Formula:
Wherein, x indicate stripe shape in the plane along x-axis with a distance from origin, y1Indicate the shape of the first long side flat
On face along y-axis with a distance from origin, y2Indicate the shape of the second long side in the plane along y-axis with a distance from origin, A is the side
The amplitude of the stripe shape of edge line, λ are the distance between two adjacent peaks of the long side；M is the spacing of two long sides,
Also referred to as design wave is wide.
Before the design parameter of above-mentioned each pattern can refer in specific embodiment corresponding construction data, it is no longer superfluous herein
It states.
The production method of solar battery provided by the present invention, by the way that doped layer is arranged in silicon crystal substrate surface；It is logical
It crosses and prints surface grid line in the silicon crystal substrate two sides through overdoping without net netting version, obtain the solar battery；Wherein, institute
Stating without net netting version includes wavy frame pattern, and any one section of line segment is curved section on the frame pattern.This hair
It is bright to be designed by the way that frame S broken line undaform in the prior art design is changed to waveform curved section, preferably avoid steel wire
The intersection point of net greatly reduces when printing in the prior art, and frame line forms angle at turning and is easy network blocking, and slurry is made to exist
It is difficult when lower ink, disconnected grid, empty the problem of printing are caused, keeps the surface grid line of finally obtained solar battery more complete, that is, compares
With the prior art, the series resistance of solar battery is reduced, improves the efficiency of solar battery.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part
Explanation.
Solar battery provided by the present invention and preparation method thereof is described in detail above.It is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand originally
The method and its core concept of invention.It should be pointed out that for those skilled in the art, not departing from this hair
, can be with several improvements and modifications are made to the present invention under the premise of bright principle, these improvement and modification also fall into power of the present invention
In the protection scope that benefit requires.
Claims (10)
1. a kind of solar battery, which is characterized in that the solar battery includes surface grid line；
The frame of the surface grid line is waveform, and any one section of line segment is curved section on the frame.
2. solar battery as described in claim 1, which is characterized in that distance between two adjacent peaks of the frame
Range is 250 microns to 270 microns, including endpoint value.
3. solar battery as claimed in claim 2, which is characterized in that the range of the width of the frame is 30 microns to 40
Micron, including endpoint value.
4. solar battery as described in claim 1, which is characterized in that the solar battery includes time main grid, described secondary
Main grid is waveform time main grid；Wherein, the range of the distance between two adjacent wave crests of the waveform time main grid is 150 micro-
Rice is to 170 microns, including endpoint value.
5. solar battery as claimed in claim 4, which is characterized in that the range of the width of the secondary main grid be 20 microns extremely
30 microns, including endpoint value.
6. such as solar battery described in any one of claim 1 to 5, which is characterized in that the stripe shape of the frame and institute
The stripe shape for stating time main grid meets following formula:
Wherein, x indicate stripe shape in the plane along x-axis with a distance from origin, y indicate stripe shape in the plane along y-axis from
The distance of origin, A are the amplitude of the stripe shape；Distance of the λ between described two adjacent peaks.
7. solar battery as described in claim 1, which is characterized in that the surface grid line of the solar battery includes master
Grid, the main grid are that two long sides are wavy main grid.
8. solar battery as claimed in claim 7, which is characterized in that two of any bar in two long sides of the main grid
The range of distance between adjacent peaks is 125 microns to 135 microns, including endpoint value；The spacing of two long sides of the main grid
Range be 0.65 millimeter to 0.75 millimeter, including endpoint value.
9. solar battery as claimed in claim 8, which is characterized in that the stripe shape of two long sides of the main grid meets
Following formula:
Wherein, x indicate stripe shape in the plane along x-axis with a distance from origin, y1Indicate the shape of the first long side edge in the plane
Y-axis is with a distance from origin, y2Indicate the shape of the second long side in the plane along y-axis with a distance from origin, A is the edge line
The amplitude of stripe shape, λ are the distance between two adjacent peaks of the long side；M is the spacing of two long sides, is also referred to as set
It is wide to count wave.
10. a kind of sun is by the production method of battery characterized by comprising
In silicon crystal substrate surface, doped layer is set；
By printing surface grid line in the silicon crystal substrate two sides through overdoping without net netting version, the solar battery is obtained；
Wherein, it is described without net netting version include wavy frame pattern, any one section of line segment is curve on the frame pattern
Section.
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| CN201811167604.XA CN109545862A (en) | 2018-10-08 | 2018-10-08 | A kind of solar battery and preparation method thereof |
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| CN201811167604.XA CN109545862A (en) | 2018-10-08 | 2018-10-08 | A kind of solar battery and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117219687A (en) * | 2023-11-06 | 2023-12-12 | 晶科能源(海宁)有限公司 | Solar cell and photovoltaic module |
| EP4099403A4 (en) * | 2020-12-30 | 2024-03-13 | Tongwei Solar Chengdu Co Ltd | Solar cell and front electrode thereof, and manufacturing method |
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