CN204045603U - A kind of solar cell string and solar module - Google Patents
A kind of solar cell string and solar module Download PDFInfo
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- CN204045603U CN204045603U CN201420531638.3U CN201420531638U CN204045603U CN 204045603 U CN204045603 U CN 204045603U CN 201420531638 U CN201420531638 U CN 201420531638U CN 204045603 U CN204045603 U CN 204045603U
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- thin grid
- grid line
- cell string
- solar cell
- joint
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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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Abstract
The utility model relates to a kind of solar cell string, it is adopted solar battery sheet to be connected in series between two by welding and forms, solar battery sheet comprises the silicon chip be cascading, diffusion layer and antireflection film layer, antireflection film layer upper surface is provided with thin grid line unit, described silicon chip lower surface is provided with back of the body electric field layer, thin grid line unit is surrounded by some thin grid lines, described the inner converges at joint, outer end stretches out along antireflection film layer upper surface, joint is provided with the main gate line for collecting electric current, welding one end correspondence is covered in the main gate line of solar battery sheet, the other end is connected with the back of the body electric field layer of another solar battery sheet.By the inner of some thin grid lines is converged at joint, and its outer end is stretched out along antireflection film layer upper surface, and the main gate line be provided with on joint for collecting electric current, such one side can reduce main gate line shading-area, the transmission length of electric current on thin grid line can be reduced on the other hand, reduce its energy loss.
Description
Technical field
The utility model belongs to photovoltaic crystalline silicon area of solar cell, is specifically related to a kind of solar cell string and solar module.
Background technology
Solar energy is the inexhaustible regenerative resources of the mankind, is also clean energy resource, does not produce any environmental pollution.In the middle of effective utilization of solar energy, it is research field with fastest developing speed, most active in the last few years that solar photoelectric utilizes.Crystal silicon solar energy battery is mainly based on semi-conducting material, and its operation principle is, after utilizing photoelectric material to absorb luminous energy, the device that opto-electronic conversion reaction directly becomes light energy conversion electric energy occurs.Electricity conversion and production cost are two importances that restriction crystal silicon solar energy battery uses on a large scale, and the factor affecting electricity conversion is a lot, all can be summed up as utilance and the surface recombination situation of solar photon.Improve the utilance of sunlight by reducing the shading-area in cell piece front, the effective plane of illumination increasing cell piece front realizes.
Application number be 201110351194.6 Chinese invention patent disclose a kind of solar battery sheet and solar cell string, thin grid line and main gate line are located at solar battery sheet front simultaneously, the electric current that solar battery sheet produces converges to the little main gate line of shading-area by thin grid line, then is reached back electrode or the back of the body electric field in another adjacent solar cell back face by convergent belt by main gate line.Because main gate line shading-area is little, thus larger electric current can be produced; The thin grid line of every bar is connected with at least one main gate line, and the electric current that cell piece produces can be passed to main gate line from the thin grid line that length is the shortest, and the electric energy loss on electrode is little, improves the utilization rate of electrical of cell piece.Although this solar battery sheet avoids offer conductive hole on solar battery sheet, reduce conductive hole manufacturing procedure, while reduction manufacturing cost, maintain the photoelectric conversion efficiency suitable with high performance solar batteries; But be positioned at the edge of solar battery sheet due to main gate line, cause the distant of the thin grid line of part and main gate line, and thin grid line is arranged in a crossed manner or be combined to form necessarily as rhombus, rectangle, dendroid or the shape such as netted, it is excessive that these factors all make electric current consume when collecting, and causes energy loss.
Summary of the invention
The utility model object provides a kind of main gate line shading-area little and the solar cell string that carefully grid line energy loss is less to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution adopted in the utility model is: a kind of solar cell string, it is adopted at least two solar battery sheets to be connected in series between two by welding and forms, described solar battery sheet comprises the silicon chip be cascading from bottom to top, diffusion layer and antireflection film layer, described antireflection film layer upper surface is provided with at least one thin grid line unit, described silicon chip lower surface is provided with at least one back of the body electric field layer, described thin grid line unit is surrounded by some thin grid lines, the one end defining thin grid line is outer end, the other end is inner, described the inner converges at joint, described outer end stretches out along antireflection film layer upper surface, described joint is provided with the main gate line for collecting electric current, described welding one end correspondence is covered in the main gate line of solar battery sheet, the other end is connected with the back of the body electric field layer of another solar battery sheet.
Optimally, described joint forms straight line on thin grid line unit transverse or longitudinal direction, and described main gate line is the rectangular of joint on the whole described straight line of covering or the billet for covering single joint.
Optimally, the outer end that the outer end of described thin grid line is interconnected thin grid line or described four adjacent thin grid lines is connected with thin grid line in interval between two.
Further, described thin grid line unit is square and has multiple, and it is along thin grid line unit transverse or/and longitudinal arranged adjacent, and thin grid line outer end corresponding between adjacent thin grid line unit is overlapping.
Another object of the utility model is to provide a kind of solar module, comprise the backboard, EVA layer, solar cell string, EVA layer and the header board glassy layer that are cascading from bottom to top, it also comprises the frame clamping backboard and header board glassy layer and the terminal box be installed on backboard bottom surface, and described solar cell string adopts above-mentioned solar cell string.
Because technique scheme is used, the utility model compared with prior art has following advantages: the utility model solar cell string, by the inner of some thin grid lines is converged at joint, and its outer end is stretched out along antireflection film layer upper surface, and the main gate line be provided with on joint for collecting electric current, such one side can reduce main gate line shading-area, can reduce the transmission length of electric current on thin grid line on the other hand, reduce its energy loss.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the utility model solar cell string;
Accompanying drawing 2 is the vertical view of the utility model solar cell string part-structure;
Accompanying drawing 3 is the vertical view of the utility model solar module;
Accompanying drawing 4 is the structural representation of the utility model solar module;
Wherein, 1, silicon chip; 2, diffusion layer; 3, antireflection film layer; 4, thin grid line; 41, thin grid line unit; 5, main gate line; 6, electric field layer is carried on the back; 7, welding; 11, solar cell string; 12, EVA layer; 13, backboard; 14, header board glassy layer; 15, frame; 16, terminal box.
Embodiment
Below in conjunction with embodiment shown in the drawings, the utility model is further described.
Embodiment 1
A kind of solar cell string is provided in the present embodiment, its as depicted in figs. 1 and 2, it by least two solar battery sheets by welding 7 be connected in series form (in the present embodiment, solar battery sheet is two); One end correspondence of welding 7 is covered in the main gate line 5 of solar battery sheet, and the other end is connected with the back of the body electric field layer 6 of another solar battery sheet; And solar battery sheet mainly comprises silicon chip 1, diffusion layer 2, antireflection film layer 3, thin grid line 4, main gate line 5 and back of the body electric field layer 6.
Wherein, carry on the back electric field layer 6, silicon chip 1, diffusion layer 2 and antireflection film layer 3 to be cascading from bottom to top; Antireflection film layer 3 upper surface is provided with at least one thin grid line unit 41, and thin grid line unit 41 is surrounded by some thin grid lines 4.Convenient in order to describe, thin grid line 4 one end that definition surrounds thin grid line unit 41 be outer end, the other end for inner, thin grid line 4 the inner converges at a bit, i.e. joint; Thin grid line 4 outer end stretches out along antireflection film layer 3 upper surface; Main gate line 5 is arranged on joint for collecting the electric current that thin grid line 4 transmits.Such solar battery sheet can reduce the shading-area of main gate line 5 on the one hand, thus improves the transmitance of sunlight; The transmission length of electric current on thin grid line can be reduced on the other hand, reduce its energy loss, the final electricity conversion improving solar battery sheet.
In the present embodiment, joint forms straight line in thin grid line unit 41 transverse direction or longitudinal direction.And the structure of main gate line 5 has multiple possibility, can be such as many rectangular, cover multiple joints of being on same straight line respectively simultaneously; Can be billet, only cover a joint; Also can be that rectangular, billet combines etc.; In order to save the materials'use amount of main gate line 5, in the present embodiment, main gate line 5 adopts the billet only covering a joint, and such electric current can be undertaken transmitting (as shown in Figure 2) by welding 7.
In the present embodiment, as shown in Figure 2, form a little square by after the outer end line of thin grid line 4, and solar battery sheet becomes a large square along one of them thin grid line unit 41 at its horizontal and vertical arranged adjacent by the square thin grid line unit 41 that 4*4 (after all 16) are such.The outer end that wherein outer end of thin grid line 4 is interconnected thin grid line 4 or adjacent four thin grid lines 4 is connected with thin grid line 4 in interval between two, and thin grid line 4 outer end corresponding between adjacent thin grid line unit 41 is overlapping.As can be seen from Figure 2, both sides not adjacent with other thin grid line unit 41 in the thin grid line unit 41 of large square exterior perimeter or on outer end between be interconnected thin grid line 4, namely form complete line segment or little Quad Sides; And be not all connected with thin grid line 4 between outer end on thin grid line unit 41 limit adjacent with other thin grid line unit 41, namely define desultory little Quad Sides.When wherein certain thin grid line 4 damages and is in off state, the electric current that solar battery sheet produces can be transmitted by other path, is conducive to the size ensureing to collect electric current while reducing current delivery length.In order to reduce thin grid line shading-area further and save material, the outer end money of four adjacent thin grid lines can adopt interval between two to connect thin grid line, thus ensures the unimpeded of circuit.
Embodiment 2
There is provided a kind of solar module in the present embodiment, it mainly comprises solar cell string 11, EVA(ethylene-vinyl acetate copolymer as shown in Figure 3 and Figure 4) layer 12, backboard 13, header board glassy layer 14, frame 15 and terminal box 16.Wherein, backboard 13, EVA layer 12, solar cell string 11, EVA layer 12 and header board glassy layer 14 are cascading from bottom to top; Frame 15 is for clamping backboard 13 and header board glassy layer 14; Terminal box 16 is arranged on the bottom surface of backboard 13.In the present embodiment, solar cell string 11 adopts the solar cell string in embodiment 1.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection range of the present utility model.
Claims (5)
1. a solar cell string, it is characterized in that: it is adopted at least two solar battery sheets to be connected in series between two by welding (7) and forms, described solar battery sheet comprises the silicon chip (1) be cascading from bottom to top, diffusion layer (2) and antireflection film layer (3), described antireflection film layer (3) upper surface is provided with at least one thin grid line unit (41), described silicon chip (1) lower surface is provided with at least one back of the body electric field layer (6), described thin grid line unit (41) is surrounded by some thin grid lines (4), the one end defining thin grid line (4) is outer end, the other end is inner, described the inner converges at joint, described outer end stretches out along antireflection film layer (3) upper surface, described joint is provided with the main gate line (5) for collecting electric current, described welding (7) one end correspondence is covered in the main gate line (5) of solar battery sheet, the other end is connected with the back of the body electric field layer (6) of another solar battery sheet.
2. solar cell string according to claim 1, it is characterized in that: described joint thin grid line unit (41) laterally or longitudinally on form straight line, described main gate line (5) is for covering the rectangular of joint on whole described straight line or the billet for covering single joint.
3. solar cell string according to claim 1, is characterized in that: the outer end that the outer end of described thin grid line (4) is interconnected thin grid line (4) or described four adjacent thin grid lines (4) is connected with thin grid line (4) in interval between two.
4. solar cell string according to claim 3, it is characterized in that: described thin grid line unit (41) is for square and have multiple, it is along thin grid line unit (41) laterally or/and longitudinal arranged adjacent, and thin grid line (4) outer end corresponding between adjacent thin grid line unit (41) is overlapping.
5. a solar module, comprise the backboard (13), EVA layer (12), solar cell string (11), EVA layer (12) and the header board glassy layer (14) that are cascading from bottom to top, it also comprises the frame (15) clamping backboard (13) and header board glassy layer (14) and the terminal box (16) be installed on backboard (13) bottom surface, it is characterized in that: described solar cell string (11) adopts solar cell string according to claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531638.3U CN204045603U (en) | 2014-09-16 | 2014-09-16 | A kind of solar cell string and solar module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531638.3U CN204045603U (en) | 2014-09-16 | 2014-09-16 | A kind of solar cell string and solar module |
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| Publication Number | Publication Date |
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| CN204045603U true CN204045603U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420531638.3U Active CN204045603U (en) | 2014-09-16 | 2014-09-16 | A kind of solar cell string and solar module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681010A (en) * | 2017-10-12 | 2018-02-09 | 北京军秀咨询有限公司 | A kind of solar battery sheet and its solar cell string and solar cell module |
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2014
- 2014-09-16 CN CN201420531638.3U patent/CN204045603U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681010A (en) * | 2017-10-12 | 2018-02-09 | 北京军秀咨询有限公司 | A kind of solar battery sheet and its solar cell string and solar cell module |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 215542 Jiangsu city of Suzhou province Changshou City Shajiabang Changkun Industrial Park Teng Hui Road No. 1 Patentee after: Suzhou Tenghui Photovoltaic Technology Co., Ltd. Address before: 215542 Jiangsu city of Suzhou province Changshu Shajiabang Changkun Industrial Park Teng Hui Road No. 1 Patentee before: Zhongli Talesun Solar Technology Co., Ltd. |
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| CP03 | Change of name, title or address |