CN109980023A - Photovoltaic cell and photovoltaic module - Google Patents
Photovoltaic cell and photovoltaic module Download PDFInfo
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- CN109980023A CN109980023A CN201711444946.7A CN201711444946A CN109980023A CN 109980023 A CN109980023 A CN 109980023A CN 201711444946 A CN201711444946 A CN 201711444946A CN 109980023 A CN109980023 A CN 109980023A
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- 230000005684 electric field Effects 0.000 claims description 26
- 239000002002 slurry Substances 0.000 abstract description 6
- 210000004027 cell Anatomy 0.000 description 46
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000006467 substitution reaction 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The present invention provides a kind of photovoltaic cell, the thin grid line that its front surface is equipped with several main gate lines being parallel to each other and is connected with main gate line, the thickness of the thin grid line shows the variation of regularity along its length, and thin grid line is greater than thickness of the thin grid line at other positions in the thickness for the place that is connected with main gate line.The present invention is by being arranged thin grid line in uneven thickness, so that thicker with the thickness of main gate line intersection, and it is gradually thinning towards the direction far from main gate line, this mode does not influence the collection of electric current, makes slurry from thickness to thin, save slurry, and power loss is lower than conventional batteries piece, is conducive to the generating efficiency for improving photovoltaic module, in addition, since thin grid line and main gate line intersection location thickness are thicker, resist the ability of disconnected grid also stronger.
Description
Technical field
The present invention relates to field of photovoltaic power generation more particularly to a kind of photovoltaic cells and photovoltaic module.
Background technique
Photovoltaic module is the key player in photovoltaic generating system, constitutes entire photovoltaic power generation system by mutually concatenation
System, and photovoltaic cell is the minimum generator unit in photovoltaic module, can directly be produced electricl energy.Photovoltaic cell surface passes through
Gate line electrode (such as main gate line, thin grid line) collects photogenerated current, and silver paste material is usually used in gate line electrode, passes through silk
Net printing technology is formed in the surface of photovoltaic cell, according to different graphic designs, different halftones can be used and printed,
Form the photovoltaic cell of different grid line patterns.
The gate line electrode of existing photovoltaic cell, back electric field, at various locations on thickness be all unified, be all root
Depending on halftone, current cell piece to grid line, carry on the back the thickness of electric field all without special design requirement, thus the print used
Brush halftone is also conventional halftone.With the continuous development of photovoltaic technology, more and more researches show that, different cell piece nets
Version, grid line or the effect and difference for carrying on the back electric field collected current, in order to reach ideal electric current collection effect, generally require basis
Different halftones come to grid line, carry on the back electric field thickness control, thus achieve the purpose that save material reduce cost.
Summary of the invention
In view of this, the present invention provides a kind of photovoltaic cell and photovoltaic module, to improve electric current collection effect and reduce
Production cost.
Specifically, the present invention provides a kind of photovoltaic cell, front surface be equipped with several main gate lines being parallel to each other and with
The thin grid line that main gate line is connected, the thickness of the thin grid line show the variation of regularity, and thin grid line along its length
It is greater than thickness of the thin grid line at other positions in the thickness for the place that is connected with main gate line.
Further, the outer surface of the thin grid line is prolonged from the left side of photovoltaic cell in continuous undulating movement shape
Extend to the right edge of photovoltaic cell.
Further, the wave crest of the thin grid line outer surface is located at thin grid line and the crossover location of main gate line, trough position
Center position between adjacent two main gate line.
Further, the thin grid line in crest location with a thickness of 10~30um, wave trough position with a thickness of 5~
20um。
Further, the center position between adjacent two main gate line is additionally provided with is connected with the wave trough position of thin grid line
The auxiliary grid line connect.
Further, the center position of the photovoltaic cell is equipped with strip gap, the gap and the thin grid
Line is arranged in parallel, and right edge of the gap from the left side linear extension of the photovoltaic cell to photovoltaic cell, between described
Gap is the blank area of not set gate line electrode.
Further, the back surface of the photovoltaic cell is equipped with back electrode and in the extension of continuous undulating movement shape
Electric field is carried on the back, the thickness change rule of the back electric field is identical as the thickness change rule of thin grid line of photovoltaic cell front surface.
Further, corresponding, institute is gone to upper and lower at the thinner thickness of the back electric field at the thinner thickness of the thin grid line
The thickness thicker part that the thickness thicker part and the back surface for stating thin grid line carry on the back electric field goes to upper and lower corresponding.
Further, the photovoltaic cell front surface is equipped with several rectangular cell units for being mutually juxtaposed setting, institute
The left side for stating battery unit from the photovoltaic cell is arranged successively to the right edge of the photovoltaic cell, two neighboring electricity
Sleeve configuration area to be cut is additionally provided between pool unit, the area to be cut is the blank area of not set gate line electrode.
Further, the front surface of each battery unit is equipped with the main gate line and the thin grid line, different batteries
The length direction of thin grid line is all the same in unit.
Further, the thickness change direction of thin grid line is all the same in different battery units, thin grid in each battery unit
The thickness of line is gradually thinning from right to left.
Further, in single battery unit, single thin grid line right end with a thickness of 10~30um, left end with a thickness of
5~15um.
Further, the back surface of the photovoltaic cell is equipped with thickness in the back electric field of regularity variation.
Further, the thickness change direction of the back electric field is set with the thickness change direction of the thin grid line in opposite
It sets.
Further, it is described back electric field thickness it is gradually thinning from left to right, and thickness with a thickness of 20~50um, most
Thin place with a thickness of 10~30um.
Further, the thin grid line has arc-shaped outer surface or tilting outer surface.
The present invention also provides a kind of photovoltaic modulies comprising photovoltaic cell as described above.
Further, the thin grid line has arc-shaped outer surface or tilting outer surface.
Further, the thin grid line has triangular cross section.
The present invention is by being arranged thin grid line in uneven thickness, so that thicker with the thickness of main gate line intersection, and towards remote
Gradually thinning from the direction of main gate line, this mode does not influence the collection of electric current, makes slurry from thickness to thin, saves slurry, and
And power loss is lower than conventional batteries piece, is conducive to the generating efficiency for improving photovoltaic module, in addition, due to thin grid line and main grid
Line intersection location thickness is thicker, resists the ability of disconnected grid also stronger.
Detailed description of the invention
Fig. 1 is the front gate line schematic diagram of photovoltaic cell in first embodiment of the invention.
Fig. 2 is the thin grid line thickness change schematic diagram of photovoltaic cell in first embodiment of the invention.
Fig. 3 is the front gate line schematic diagram of photovoltaic cell in second embodiment of the invention.
Fig. 4 is the thin grid line thickness change schematic diagram of photovoltaic cell in second embodiment of the invention.
Fig. 5 is the schematic diagram of the thin adoptable two kinds of outer surfaces of grid line of the invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
It is only to be not intended to limit the invention merely for for the purpose of describing particular embodiments in terminology used in the present invention.
It is also intended in the present invention and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
As shown in Figure 1 and Figure 2, in the first embodiment of the present invention, a kind of photovoltaic cell 100, the photovoltaic cell are provided
The front surface of piece 100 is equipped with several main gate lines 101 being parallel to each other and the thin grid line 102 being connected with main gate line 101, wherein
Equally it is arranged between several main gate lines 101, the thin grid line 102 intersects vertically with the main gate line 101, and adjacent
Two main gate lines 101 between be connected by thin grid line 102, the quantity of the thin grid line 102 is far longer than the main gate line
101 quantity, and spaced set is also kept between thin grid line 102, but the spacing is less than the spacing between main gate line 101.Value
It obtains one to be mentioned that, the thickness of the thin grid line 102 shows the variation of regularity along its length, that is, the thin grid line 102
Outer surface the right edge of cell piece 100, and thin grid are extended in continuous undulating movement shape from the left side of cell piece 100
The wave crest P on 102 surface of line is located at thin grid line 102 and the crossover location of main gate line 101, and trough Q is then located at adjacent two main grid
Center position between line 101, and thin grid line 102 in wave crest P position with a thickness of 10~30um, in the position trough Q
With a thickness of 5~20um, can cooperate as shown in fig.2, the main gate line 101 is located at the wave crest P position.In addition, adjacent two is main
Center position between grid line 101 is additionally provided with the auxiliary grid line 103 being connected with the position trough Q of thin grid line 102, described auxiliary
Helping grid line 103 is sectional design, for connecting the place of adjacent two 102 thinner thicknesses of thin grid line, prevents thin grid line 102 thick
Degree thin location leads to the problem of disconnected grid to influence the collection of electric current.In addition, in the present embodiment, the photovoltaic cell 100
Center position be equipped with strip gap 104, the gap 104 is arranged in parallel with the thin grid line 102, with the main gate line
101 extending direction is vertical, and gap 104 is from 105 linear extension of left side of the photovoltaic cell 100 to photovoltaic cell
100 right edge 106, the interior gap 104 is blank area, is not provided with gate line electrode (main gate line 101, thin grid line 102 and auxiliary
Grid line 103), therefore, the gap 104 can be considered as marker space, for dividing photovoltaic cell 100 for symmetrical upper half
Grid line pattern on piece A and lower half B, the upper half A and lower half B is relative to the gap 104 also in symmetrically distribution.
Due to the presence in gap 104, so that the middle position of the main gate line 101 is truncated by the gap 104 and forms two sections, respectively
It is distributed on half A and lower half B.It is noted that the back surface of the photovoltaic cell 100 is set in the present embodiment
Have back electrode 107 and in continuous undulating movement shape extend back electric field 108, the thickness change rule of the back electric field 108 with
The thickness change rule of the thin grid line 102 of 100 front surface of photovoltaic cell is identical, i.e. the thinner thickness of the thin grid line 102 of front surface
Locate, the thickness thicker part and back table of front surface thin grid line 102 corresponding with going to upper and lower at the thinner thickness of back surface back electric field 108
The thickness thicker part of face back electric field 108 goes to upper and lower correspondence, can join shown in Fig. 2, carry on the back the wave crest of 108 thickness of electric field, wave trough position with
The wave crest of thin 102 thickness of grid line of front surface, wave trough position correspond respectively.
As shown in Figures 3 and 4, in second embodiment of the invention, a kind of photovoltaic cell 200 is provided, front surface is set
There are several rectangular cell units 201 for being mutually juxtaposed setting, the battery unit 201 is from a left side for the photovoltaic cell 200
Side 202 is arranged successively to the right edge 203 of the photovoltaic cell 200, and the gate line electrode between battery unit 201 is (main
Grid line 205, thin grid line 206 and auxiliary grid line) it keeps mutually being not attached to, sleeve configuration is additionally provided between two neighboring battery unit 201
Area 204 to be cut, the interior area 204 to be cut is blank area, is not provided with gate line electrode (main gate line 205, thin grid line 206 and auxiliary
Grid line).Each battery unit 201 include main gate line 205 and with the thin grid line 206 connected vertically of main gate line 205, and it is described
Main gate line 205 is arranged by the right side of the battery unit 201, and one end of the thin grid line 206 and the main gate line 205 are hung down
Straight intersection, and thickness of the thin grid line 206 in intersection is greater than the thickness of thin 206 other positions of grid line, it is preferable that in single electricity
In pool unit 201, the thickness of the thin grid line 206 is gradually thinning towards the direction far from main gate line 205 from the intersection, because
This, in the present embodiment, the thickness change of thin grid line 206 in all battery units 201 of 200 front surface of photovoltaic cell
Direction is towards the same direction, i.e., thickness is gradually thinning from right to left, it is preferable that single thin in single battery unit 201
206 right end of grid line with a thickness of 10~30um, left end with a thickness of 5~15um, and the back surface of the photovoltaic cell 200
Equipped with thickness in the back electric field 207 of regularity variation, the thickness change direction of the back electric field 207 and 200 front surface of cell piece are thin
The thickness change direction of grid line 206 is in being reversed, that is, 206 thickness of thin grid line of 201 front surface of single battery unit from the right side to
It is left gradually thinning, and 207 thickness of back electric field of 201 back surface of battery unit is then gradually thinning from left to right, joins Fig. 4, and should
The thicker part of electric field 207 is carried on the back with a thickness of 20~50um, thin location is with a thickness of 10~30um.
In addition, in order to improve the reflecting power of thin grid line 102,206 surfaces, in the first embodiment, second embodiment
Thin grid line 102,206 arc-shaped outer surface X or tilting outer surface Y can be used, be illustrated in figure 5 optional two kinds of thin grid line
Form, wherein the tilting outer surface Y is preferably two opposite triangle slope surfaces, makes the transverse direction of thin grid line 102,206
Section is triangular in shape.In addition, the electric current collection area in order to avoid thin grid line becomes smaller, the first embodiment, second embodiment
In the width of thin grid line 102,206 keep uniform.
In conjunction with aforementioned first embodiment, second embodiment it is found that the thin grid line thickness of photovoltaic cell front surface is simultaneously uneven
It is even, thicker with the thickness of main gate line intersection, and it is gradually thinning towards the direction far from main gate line, this mode is according to electric current
It collects, makes slurry from thickness to thin, slurry can be saved, and power loss is lower than conventional batteries piece, be conducive to improve photovoltaic group
The generating efficiency of part, in addition, resisting the ability of disconnected grid also stronger since the contact position thickness of thin grid line and main gate line is thicker.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (19)
1. a kind of photovoltaic cell, the thin grid that front surface is equipped with several main gate lines being parallel to each other and is connected with main gate line
Line, which is characterized in that the thickness of the thin grid line shows the variation of regularity along its length, and thin grid line with main grid
Thickness in place of line is connected is greater than thickness of the thin grid line at other positions.
2. photovoltaic cell as described in claim 1, which is characterized in that the outer surface of the thin grid line is from photovoltaic cell
Left side extends to the right edge of photovoltaic cell in continuous undulating movement shape.
3. photovoltaic cell as claimed in claim 2, which is characterized in that the wave crest of the thin grid line outer surface is located at thin grid line
At the crossover location of main gate line, center position of the trough between adjacent two main gate line.
4. photovoltaic cell as claimed in claim 3, which is characterized in that the thin grid line crest location with a thickness of 10~
30um, in wave trough position with a thickness of 5~20um.
5. photovoltaic cell as claimed in claim 4, which is characterized in that the center position between adjacent two main gate line
It is additionally provided with the auxiliary grid line being connected with the wave trough position of thin grid line.
6. photovoltaic cell as claimed in claim 5, which is characterized in that the center position of the photovoltaic cell is equipped with length
Bar shaped gap, the gap are arranged in parallel with the thin grid line, and gap is from the left side linear extension of the photovoltaic cell
To the right edge of photovoltaic cell, the gap is the blank area of not set gate line electrode.
7. photovoltaic cell as described in claim 1, which is characterized in that the back surface of the photovoltaic cell is equipped with back electrode
And the back electric field extended in continuous undulating movement shape, the thickness change rule and photovoltaic cell front surface of the back electric field
Thin grid line thickness change rule it is identical.
8. photovoltaic cell as claimed in claim 7, which is characterized in that electric with the back at the thinner thickness of the thin grid line
Correspondence is gone to upper and lower at the thinner thickness of field, the thickness that the thickness thicker part and the back surface of the thin grid line carry on the back electric field is thicker
Place goes to upper and lower correspondence.
9. photovoltaic cell as described in claim 1, which is characterized in that the photovoltaic cell front surface is equipped with several mutual
The rectangular cell unit being set side by side, the left side of the battery unit from the photovoltaic cell are arranged successively to the light
The right edge of cell piece is lied prostrate, sleeve configuration area to be cut is additionally provided between two neighboring battery unit, the area to be cut is not set
Set the blank area of gate line electrode.
10. photovoltaic cell as claimed in claim 9, which is characterized in that the front surface of each battery unit is equipped with institute
Main gate line and the thin grid line are stated, the length direction of thin grid line is all the same in different battery units.
11. photovoltaic cell as claimed in claim 10, which is characterized in that the thickness change of thin grid line in different battery units
Direction is all the same, and the thickness of thin grid line is gradually thinning from right to left in each battery unit.
12. photovoltaic cell as claimed in claim 11, which is characterized in that in single battery unit, single thin grid line is right
End with a thickness of 10~30um, left end with a thickness of 5~15um.
13. photovoltaic cell as claimed in claim 11, which is characterized in that the back surface of the photovoltaic cell is equipped with thickness
In the back electric field of regularity variation.
14. photovoltaic cell as claimed in claim 13, which is characterized in that it is described back electric field thickness change direction with it is described
The thickness change direction of thin grid line is in be reversed.
15. photovoltaic cell as claimed in claim 14, which is characterized in that the thickness of the back electric field gradually becomes from left to right
It is thin, and thickness with a thickness of 20~50um, thinnest part with a thickness of 10~30um.
16. the photovoltaic cell as described in claim 1 to 15 any one, which is characterized in that the thin grid line has arc
Outer surface or tilting outer surface.
17. a kind of photovoltaic module, which is characterized in that including the photovoltaic cell as described in claim 1 to 15.
18. photovoltaic module as claimed in claim 17, which is characterized in that the thin grid line has arc-shaped outer surface or tilting
Outer surface.
19. photovoltaic module as claimed in claim 18, which is characterized in that the thin grid line has triangular cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711444946.7A CN109980023A (en) | 2017-12-27 | 2017-12-27 | Photovoltaic cell and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711444946.7A CN109980023A (en) | 2017-12-27 | 2017-12-27 | Photovoltaic cell and photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109980023A true CN109980023A (en) | 2019-07-05 |
Family
ID=67072225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711444946.7A Pending CN109980023A (en) | 2017-12-27 | 2017-12-27 | Photovoltaic cell and photovoltaic module |
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| CN (1) | CN109980023A (en) |
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| CN110518077A (en) * | 2019-08-30 | 2019-11-29 | 苏州阿特斯阳光电力科技有限公司 | A kind of solar battery sheet and photovoltaic module |
| CN112531039A (en) * | 2020-11-19 | 2021-03-19 | 晶澳（扬州）太阳能科技有限公司 | Back electrode of double-sided battery and double-sided battery |
| CN112701169A (en) * | 2020-12-14 | 2021-04-23 | 百力达太阳能股份有限公司 | Solar cell for enhancing welding strength after cutting and cutting method thereof |
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Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Applicant after: Atlas sunshine Power Group Co.,Ltd. Applicant after: Changshu Artes Sunshine Power Technology Co.,Ltd. Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Applicant before: CSI SOLAR POWER GROUP Co.,Ltd. Applicant before: Changshu Artes Sunshine Power Technology Co.,Ltd. |