CN209133516U - A kind of grid line structure based on 12 main grid type cell pieces - Google Patents
A kind of grid line structure based on 12 main grid type cell pieces Download PDFInfo
- Publication number
- CN209133516U CN209133516U CN201821750286.5U CN201821750286U CN209133516U CN 209133516 U CN209133516 U CN 209133516U CN 201821750286 U CN201821750286 U CN 201821750286U CN 209133516 U CN209133516 U CN 209133516U
- Authority
- CN
- China
- Prior art keywords
- grid
- line
- main gate
- main
- gate line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a kind of grid line structures based on 12 main grid type cell pieces, are related to technical field of photovoltaic power generation.The utility model includes main gate line and secondary grid line, main gate line is made of several grid points and a minute grid line, grid point and a minute grid line are spaced apart, grid line one end is divided to be equipped with one group of grid line bifurcated positioned at main gate line both ends, main gate line is equipped with several segment grid lines, segment grid line is located between two secondary grid lines, and the quantity of main gate line is set as 12, the range of the width of main gate line in 0.1mm-0.2mm.The utility model is by being equipped with 12 main gate lines, and the width of main gate line main part is controlled into the range in 0.1mm-0.2mm, improve light-receiving area, by being equipped with grid line bifurcated at main gate line both ends, ensure can effective collected current while, play solder joint when increasing part light-receiving area, while avoiding main grid wire bonding, solder joint crack is reduced, has solved the problems, such as that the transfer efficiency of existing cell piece photoelectricity is too low.
Description
Technical field
The utility model belongs to technical field of photovoltaic power generation, more particularly to a kind of grid based on 12 main grid type cell pieces
Cable architecture.
Background technique
With the high speed development of photovoltaic industry, efficient differentiated products become the trump of major competition among enterprises, using efficient
The photovoltaic module of rate and high performance-price ratio has been increasingly becoming direction and the common recognition of photovoltaic industry development come degree of reduction electricity cost.
Sunlight enters battery from cell piece front, and positive metal electrode can block a part of light, this part impinges upon electricity
Luminous energy on extremely also can not just be transformed into electric energy, from this view, it is intended that grid line is done more thinner better, and prints grid line
Purpose be to conduct electric current, from the angle analysis of resistivity, grid line gets over that detailed rules and regulations conduction cross-sectional area is smaller, and ohmic loss is got over
Greatly, therefore main grid and the core of secondary grid design are how to be weighed between shading-area and conductive effect, are obtained optimal
Design scheme.
Utility model content
The purpose of this utility model is to provide a kind of grid line structures based on 12 main grid type cell pieces, by being equipped with ten
Two main gate lines, and the control of the width of main gate line main part is improved into light-receiving area in the range of 0.1mm-0.2mm, lead to
Cross main gate line both ends be equipped with grid line bifurcated, it is ensured that can effective collected current while, increase part light-receiving area, avoid simultaneously
Solder joint is played when main grid wire bonding, has reduced solder joint crack, the transfer efficiency for solving existing cell piece photoelectricity is too low
Problem.
In order to solve the above technical problems, the utility model is achieved through the following technical solutions:
The utility model is a kind of grid line structure based on 12 main grid type cell pieces, including main gate line and secondary grid line,
Diffusing procedure carries out process optimization, oxygen concentration, increase second step diffusion before increasing on the basis of existing two steps oxygen flow diffusion technique
Source flux reduces series resistance with surface dopant concentration, sheet resistance uniformity in lifting tab is increased, and promotes short circuit current and open circuit is electric
Pressure is promoted to obtain higher transfer efficiency；
The main gate line is made of several grid points and a minute grid line, and the grid point and a minute grid line are spaced apart；
Grid line one end is divided to be equipped with one group of grid line bifurcated positioned at the main gate line both ends；
The main gate line is equipped with several segment grid lines, and the segment grid line is located between two secondary grid lines.
Further, the quantity of the main gate line is set as 12, the model of the width of the main gate line in 0.1mm-0.2mm
It encloses, the width of the segment grid line is 5um bigger than the width of main gate line；
By testing and can be derived that the optimal number of main gate line is 12 using iterative method, method are as follows: one given
Achievable W in techniqueFValue acquires a S to the substitution of following equation experiment value0Value, takes S1=S0/ 2 be initial value, then
It is iterated calculating according to Newton iteration method, formula isWherein Psf
For thin grid line shading relative power dissipation, PrfFor thin grid line resistance relative power dissipation, PcfFor contact resistance loss, PtlIt is positive
The total relative power dissipation of face transverse current, this process will converge in a constant value, this value is optimal grid line
Design.
Further, the width of the grid point is set as 0.6mm, and the width for dividing grid line is set as 0.1mm.
Further, the grid line bifurcated is made of straight line and oblique line, center of the two grid line bifurcateds about main gate line
Line is symmetrical, range of the angle of the oblique line and straight line at 40-50 °.
The utility model has the following beneficial effects:
1, the utility model is controlled by being equipped with 12 main gate lines, and by the width of main gate line main part in 0.1mm-
The range of 0.2mm compares original 5BB figure, reduces positive unit consumption, production cost greatly reduces, while effective
Light-receiving area is improved, the transfer efficiency of photoelectricity is improved.
2, the utility model by main gate line both ends be equipped with grid line bifurcated, it is ensured that can effective collected current while, increase
Solder joint is played when adding part light-receiving area, while avoiding main grid wire bonding, thermal stress is released effectively when conducive to welding, has reduced weldering
Point crack.
3, main gate line is made by using the mode that grid point is connected with minute grid in the utility model, can obviously significantly reduce silver
Consumption is starched, while by being equipped with segment grid line, the collecting effect of effective strengthening electric current, when avoiding causing printing since grid line is meticulous
The case where being easy disconnected grid when with EL test, ensures that the qualification of EL test.
4, the utility model is increased on the basis of existing two steps oxygen flow diffusion technique by carrying out process optimization in diffusing procedure
Add preceding oxygen concentration, increase second step diffusion source flux and increase surface dopant concentration, improves sheet resistance uniformity in piece, reduce
Series resistance improves short circuit current and open-circuit voltage, is promoted to obtain higher transfer efficiency.
Certainly, any product for implementing the utility model does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is a kind of structural schematic diagram of grid line structure based on 12 main grid type cell pieces of the utility model；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
In attached drawing, parts list represented by the reference numerals are as follows:
1- main gate line, 2- pair grid line, 101- grid point, 102- divide grid line, 103- grid line bifurcated, 104- segment grid line, 1031-
Straight line, 1032- oblique line.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
All other embodiment obtained, fall within the protection scope of the utility model.
It please refers to shown in Fig. 1-2, the utility model is a kind of grid line structure based on 12 main grid type cell pieces, including master
Grid line 1 and secondary grid line 2 carry out process optimization in diffusing procedure, and oxygen is dense before increasing on the basis of existing two steps oxygen flow diffusion technique
Degree increases second step diffusion source flux and increases surface dopant concentration, and sheet resistance uniformity in lifting tab reduces series resistance, mentions
Short circuit current and open-circuit voltage are risen, is promoted to obtain higher transfer efficiency；
Main gate line 1 is made of several grid points 101 and minute grid line 102, and grid point 101 and minute grid line 102 are spaced apart；
102 one end of grid line is divided to be equipped with one group of grid line bifurcated 103 positioned at 1 both ends of main gate line；
Main gate line 1 is equipped with several segment grid lines 104, and segment grid line 104 is located between two secondary grid lines 2.
Wherein, the quantity of main gate line 1 is set as 12, range of the width of main gate line 1 in 0.1mm-0.2mm, segment grid
The width of line 104 is 5um bigger than the width of main gate line 1；
By testing and can be derived that the optimal number of main gate line 1 is 12 using iterative method, method are as follows: one given
Achievable W in techniqueFValue acquires a S to the substitution of following equation experiment value0Value, takes S1=S0/ 2 be initial value, then
It is iterated calculating according to Newton iteration method, formula isWherein Psf
For thin grid line shading relative power dissipation, PrfFor thin grid line resistance relative power dissipation, PcfFor contact resistance loss, PtlIt is positive
The total relative power dissipation of face transverse current, this process will converge in a constant value, this value is optimal grid line
Design.
Wherein, the width of grid point 101 is set as 0.6mm, and the width of grid line 102 is divided to be set as 0.1mm.
Wherein, grid line bifurcated 103 is made of straight line 1031 and oblique line 1032, and two grid line bifurcateds 103 are about in main gate line 1
Heart line is symmetrical, range of the angle of oblique line 1032 and straight line 1031 at 40-50 °.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (4)
1. a kind of grid line structure based on 12 main grid type cell pieces, it is characterised in that: including main gate line (1) and secondary grid line (2)；
The main gate line (1) is made of several grid points (101) and minute grid line (102), the grid point (101) and minute grid line (102)
It is spaced apart；
Grid line (102) one end is divided to be equipped with one group of grid line bifurcated (103) positioned at the main gate line (1) both ends；
The main gate line (1) is equipped with several segment grid lines (104), the segment grid line (104) be located at two secondary grid lines (2) it
Between.
2. a kind of grid line structure based on 12 main grid type cell pieces according to claim 1, which is characterized in that the master
The quantity of grid line (1) is set as 12, range of the width of the main gate line (1) in 0.1mm-0.2mm, the segment grid line
(104) width is 5um bigger than the width of main gate line (1).
3. a kind of grid line structure based on 12 main grid type cell pieces according to claim 1, which is characterized in that the grid
The width of point (101) is set as 0.6mm, and the width for dividing grid line (102) is set as 0.1mm.
4. a kind of grid line structure based on 12 main grid type cell pieces according to claim 1, which is characterized in that the grid
Line bifurcated (103) is made of straight line (1031) and oblique line (1032), and the two grid line bifurcateds (103) are about in main gate line (1)
Heart line is symmetrical, range of the angle of the oblique line (1032) and straight line (1031) at 40-50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821750286.5U CN209133516U (en) | 2018-10-27 | 2018-10-27 | A kind of grid line structure based on 12 main grid type cell pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821750286.5U CN209133516U (en) | 2018-10-27 | 2018-10-27 | A kind of grid line structure based on 12 main grid type cell pieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209133516U true CN209133516U (en) | 2019-07-19 |
Family
ID=67232919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821750286.5U Active CN209133516U (en) | 2018-10-27 | 2018-10-27 | A kind of grid line structure based on 12 main grid type cell pieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209133516U (en) |
-
2018
- 2018-10-27 CN CN201821750286.5U patent/CN209133516U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108767046B (en) | Photovoltaic solder strip, manufacturing method, solar cell string and solar cell module | |
| CN204857754U (en) | Solar cell assembly | |
| US20120298171A1 (en) | Solar cell | |
| CN102347388A (en) | solar cell module | |
| CN108987516A (en) | Latticed two-sided direct-connected solar cell module and preparation method | |
| CN205985031U (en) | High -efficient solar energy does not have main grid line crystal silicon battery piece | |
| WO2018210348A1 (en) | Solar cell module and solar cell panel | |
| Geissbühler et al. | Metallization techniques and interconnection schemes for high efficiency silicon heterojunction PV | |
| CN108550637A (en) | A kind of more main grid crystal silicon solar batteries back of the body electric field structures | |
| CN108565299A (en) | A kind of solar battery front side figure substep printing technology and its graphic structure | |
| CN103441173B (en) | Double-face electrode solar battery sheet SMT mounting structure and production technology thereof | |
| CN208781860U (en) | More main grid solar battery sheets | |
| CN209133516U (en) | A kind of grid line structure based on 12 main grid type cell pieces | |
| CN204651334U (en) | A kind of solar components structure | |
| CN110634987A (en) | Multi-main-grid welding and automatic packaging method for efficient solar cell | |
| CN108598206A (en) | A kind of photovoltaic module | |
| CN206040654U (en) | Many main grids double -faced solar cell subassembly | |
| CN108767045A (en) | Photovoltaic welding belt and manufacturing method, solar cell string and solar cell module | |
| CN210123736U (en) | Multi-main-grid solar cell and solar module | |
| CN208062061U (en) | A kind of solar battery front side substep printing technology graphic structure | |
| CN110197857A (en) | Fluting cell piece and cell piece component | |
| CN206471338U (en) | Cleavable solar energy is without main gate line crystal-silicon battery slice | |
| CN208637431U (en) | A kind of back electrode of solar cell structure, solar battery and photovoltaic module | |
| CN204516777U (en) | Silk screen arrays of conductive film and solar cell | |
| CN205028912U (en) | Be equipped with photovoltaic laminate assembly of reflection of light semicolumn between battery piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |