CN206364023U - A kind of grid line structure of IBC batteries - Google Patents
A kind of grid line structure of IBC batteries Download PDFInfo
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- CN206364023U CN206364023U CN201621311569.0U CN201621311569U CN206364023U CN 206364023 U CN206364023 U CN 206364023U CN 201621311569 U CN201621311569 U CN 201621311569U CN 206364023 U CN206364023 U CN 206364023U
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Abstract
The utility model discloses provide a kind of grid line structure of IBC batteries, including the positive gate line electrode 1 being interspersed and secondary grid line 2；Described secondary grid line 2 is fine rule, and all secondary grid lines 2 converge to one, edge on the negative electrode 3 of secondary grid line 2；There is the thin grid line 4 perpendicular to positive electrode on the positive gate line electrode of described every, thin grid line 4 is " centipede pin " structure, is uniformly distributed；Described centipede pin is is uniformly distributed, and quantity is more than or equal to 10；There is the thin grid line perpendicular to secondary grid line on the secondary grid line of described every, thin grid line is linear structure, is uniformly distributed；Described thin grid line 4 and thin grid line 6 are using spaced；Described positive gate line electrode quantity is more than or equal to 2；The secondary grid line quantity is more than or equal to 1；Described chief and vice grid line is isolated with electrode with insulating cement or laser ablation.The beneficial effects of the utility model are lifting open-circuit voltage and short circuit current flow, improve photoelectric transformation efficiency.
Description
Technical field
The utility model is related to crystal silicon solar batteries piece manufacture field, more particularly to a kind of grid line knot of IBC batteries
Structure.
Background technology
Depleted with non-renewable resources such as coal, oil, the man-made disaster such as greenhouse effects, acid rain frequently goes out
It is existing, therefore tap a new source of energy to turn into and be engaged in the target that the worker of the energy struggles jointly, and solar energy is used as one of weight
The developing way wanted and be increasingly valued by the people.Solar cell is to utilize solar energy most simple and extensive method, institute
To improve the top priority that solar cell photoelectric conversion efficiency is photovoltaic producer, intersect back contact battery（IBC）It is used as mesh
The representative of preceding high performance solar batteries has become the research emphasis of industry.
IBC batteries, refer to that battery front side is electrodeless, and positive and negative polarities metal grid lines are in finger-like cross arrangement in cell backside.
The characteristics of IBC batteries are maximum is PN junction and metal contact all in the back side of battery, the positive influence blocked without metal electrode.
Therefore with higher short circuit current flow Isc, while the back side can allow wider metal grid lines to reduce series resistance Rs, so that
Improve fill factor, curve factor FF；Plus battery front-surface field（Front Surface Field, FSF）And well passivated zone of action is come
Open loop voltage gain so that not only photoelectric transformation efficiency is high for the unobstructed battery in this front, and looks more attractive, together
When, the component of all back-contact electrodes is easier to assembling.But due to IBC batteries positive and negative electrode overleaf, so being accomplished by design one
Plant grid line structure that is rational and being easy to industrialization production.
The content of the invention
The purpose of this utility model is to provide a kind of grid line structure of IBC batteries, reaches lifting open-circuit voltage and short circuit electricity
Stream, improves the purpose of photoelectric transformation efficiency.
The utility model use technical solution be：A kind of grid line structure of IBC batteries, including be interspersed just
Gate line electrode 1 and secondary grid line 2；Described secondary grid line 2 is fine rule, and described secondary grid line 2 converges to one, edge perpendicular to pair
On the negative electrode 3 of grid line 2；There is the thin grid line 4 perpendicular to positive electrode on the positive gate line electrode of described every, thin grid line 4 is " Wu
Centipede pin " structure, is uniformly distributed, quantity be 5~50 with；Described " centipede pin " 5 is evenly distributed on thin grid line 4, and quantity is more than
Equal to 10；There is the thin grid line 6 perpendicular to secondary grid line on the secondary grid line of described every, thin grid line 6 is linear structure, uniform point
Cloth, quantity is 5~50；Described thin grid line 4 and thin grid line 6 are using spaced；Described positive gate line electrode quantity is more than
Equal to 2；The secondary grid line quantity is more than or equal to 1；Described chief and vice grid line and electrode carried out with insulating cement or laser ablation every
From.
The beneficial effects of the utility model are lifting open-circuit voltage and short circuit current flow, improve photoelectric transformation efficiency.
Brief description of the drawings
A kind of grid line structure of the preferred IBC batteries of Fig. 1 the utility model
The cell piece series system for the grid line structure that Fig. 2 is provided using the utility model.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing to this reality
It is described in further detail with new technical scheme.
In the present embodiment, using a kind of grid line structure of IBC batteries shown in accompanying drawing 1, including three be interspersed
Positive gate line electrode 1 and two secondary grid lines 2；Described secondary grid line is fine rule, and it is vertical that all secondary grid lines converge to one, edge
In on the negative electrode 3 of secondary grid line；There is the thin grid line 4 perpendicular to positive electrode on the positive gate line electrode of described every, thin grid line 4 is
" centipede pin " structure, is uniformly distributed, quantity be 15 with；Described centipede pin 5 is is uniformly distributed, quantity 20；Described every
There is the thin grid line 6 perpendicular to secondary grid line on secondary grid line, thin grid line 6 is linear structure, is uniformly distributed, quantity is 15；It is described
Thin grid line 4 and thin grid line 6 using spaced；Described chief and vice grid line is isolated with electrode with insulating cement.Table 1 is to adopt
Experimental comparison's data of crystal silicon solar batteries piece prepared by the grid line structure provided with conventional grid line structure and the utility model.
The crystal silicon solar batteries piece prepared by Experimental comparison's data of table 1, the grid line structure provided using the utility model
Open-circuit voltage improve 0.03V, short circuit current flow improves 0.05A, and photoelectric conversion rate improves 0.22%.
Table 1 is the crystal silicon solar electricity prepared using the grid line structure of conventional grid line structure and the new offer of the utility model
Experimental comparison's data of pond piece
| Uoc | Isc | Rs | Rsh | FF | NCell | IRev2 | |
| It is conventional | 0.628 | 8.897 | 0.0021 | 169.46 | 78.69 | 18.07% | 0.141 |
| The utility model | 0.631 | 8.947 | 0.0021 | 179.73 | 78.86 | 18.29% | 0.129 |
It should be noted last that, above example is merely to illustrate the technical solution of the utility model and unrestricted, sheet
Field it is to be appreciated by one skilled in the art that can be modified to the technical solution of the utility model or equivalent substitution, and
The spirit and scope of technical solutions of the utility model are not departed from, it all should cover in right of the present utility model.
Claims (6)
1. a kind of grid line structure of IBC batteries, including the positive gate line electrode (1) being interspersed and secondary grid line (2), its feature exist
In：There are the first thin grid line (4) of " centipede pin " structure perpendicular to positive electrode, the first thin grid on described positive gate line electrode (1)
Line (4) is uniformly distributed；Described centipede pin (5) is to be uniformly distributed；Have perpendicular to the straight of secondary grid line on described secondary grid line (2)
Second thin grid line (6) of cable architecture, is uniformly distributed；Described secondary grid line converges to one negative electricity perpendicular to secondary grid line in edge
On pole (3).
2. a kind of grid line structure of IBC batteries according to claim 1, it is characterised in that：Described positive gate line electrode (1)
On have the first thin grid line (4) perpendicular to positive electrode, quantity be 5~50 with.
3. a kind of grid line structure of IBC batteries according to claim 1, it is characterised in that：Described positive gate line electrode (1)
On the first thin grid line (4) with the second thin grid line (6) on secondary grid line (2) be spaced, quantity is 5~50.
4. a kind of grid line structure of IBC batteries according to claim 1, it is characterised in that：Described centipede pin (5) is equal
Even distribution, quantity is more than or equal to 10.
5. a kind of grid line structure of IBC batteries according to claim 1, it is characterised in that：Described positive gate line electrode
Quantity is more than or equal to 2, and secondary grid line quantity is more than or equal to 1.
6. a kind of grid line structure of IBC batteries according to claim 1, it is characterised in that：Described positive gate line electrode (1)
Insulated with secondary grid line (2) with electrode using insulating cement or laser ablation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621311569.0U CN206364023U (en) | 2016-12-02 | 2016-12-02 | A kind of grid line structure of IBC batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621311569.0U CN206364023U (en) | 2016-12-02 | 2016-12-02 | A kind of grid line structure of IBC batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206364023U true CN206364023U (en) | 2017-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621311569.0U Active CN206364023U (en) | 2016-12-02 | 2016-12-02 | A kind of grid line structure of IBC batteries |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863397A (en) * | 2017-11-02 | 2018-03-30 | 国家电投集团西安太阳能电力有限公司 | The electrode preparation method of IBC batteries |
| CN111490110A (en) * | 2019-10-22 | 2020-08-04 | 国家电投集团西安太阳能电力有限公司 | Electrode main grid line structure of IBC battery |
| CN111883611A (en) * | 2020-06-09 | 2020-11-03 | 天津爱旭太阳能科技有限公司 | Preparation method of P-type monocrystalline silicon wafer with good printing performance |
-
2016
- 2016-12-02 CN CN201621311569.0U patent/CN206364023U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107863397A (en) * | 2017-11-02 | 2018-03-30 | 国家电投集团西安太阳能电力有限公司 | The electrode preparation method of IBC batteries |
| CN111490110A (en) * | 2019-10-22 | 2020-08-04 | 国家电投集团西安太阳能电力有限公司 | Electrode main grid line structure of IBC battery |
| CN111883611A (en) * | 2020-06-09 | 2020-11-03 | 天津爱旭太阳能科技有限公司 | Preparation method of P-type monocrystalline silicon wafer with good printing performance |
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