CN207834321U - Cell piece and photovoltaic module - Google Patents
Cell piece and photovoltaic module Download PDFInfo
- Publication number
- CN207834321U CN207834321U CN201721909222.0U CN201721909222U CN207834321U CN 207834321 U CN207834321 U CN 207834321U CN 201721909222 U CN201721909222 U CN 201721909222U CN 207834321 U CN207834321 U CN 207834321U
- Authority
- CN
- China
- Prior art keywords
- cell piece
- grid
- pad
- silicon chip
- main grid
- 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.)
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Links
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 36
- 239000010703 silicon Substances 0.000 claims abstract description 36
- 238000003466 welding Methods 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052709 silver Inorganic materials 0.000 abstract description 5
- 239000004332 silver Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000005693 optoelectronics Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000002313 adhesive film Substances 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- 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
Abstract
A kind of cell piece of the utility model offer and photovoltaic module, the cell piece includes silicon chip and is set to the positive grid line of the silicon chip surface, the anode grid line includes several main grids being mutually parallel and the secondary grid perpendicular to the main grid, the height of the relatively described silicon chip surface of the anode grid line is set as 12~16 μm, and the width of the main grid is set as 0.1~0.3mm；The number of the main grid is set as 9 and wherein one main grids and is located on the center line of the silicon chip.The positive grid line of the utility model cell piece and photovoltaic module can effectively reduce resistance, increase photoelectric conversion efficiency, while reducing silver paste consumption, reduce cost.
Description
Technical field
The utility model is related to solar energy generation technology field, more particularly to a kind of cell piece and photovoltaic module.
Background technology
Currently, the main grid number of crystalline silicon battery plate is provided mainly to 4 or 5, the development with photovoltaic industry and city
The further demand in field, the more main grid battery chip technologies for capableing of synergy cost declining are concerned.It is main from cell piece design principle
The quantity of grid is more, and string resistance loss is just smaller.The cell piece using more main grids and corresponding photovoltaic module have been disclosed in the industry,
But factually border is evaluated and tested, and the existing cell piece using more main grids not only increases silver paste consumption, also increases follow-up photovoltaic module manufacture
The quantity required of welding in the process, and power gain unobvious.On the other hand, cell piece is formed as the core of photovoltaic module
Part, the increase of main grid number can lead to subsequently to weld that processing procedure is increasingly complex, and process costs improve；In particular by half chip electricity
The photovoltaic module of pond piece more needs to avoid the problems such as complex process, manufacturing cost improve caused by main grid number is excessive.
Therefore, it is necessary to provide a kind of improved cell piece and photovoltaic module.
Utility model content
The utility model aim is to provide a kind of cell piece and photovoltaic module, can reduce resistance, increase opto-electronic conversion
Efficiency, while silver paste consumption is reduced, reduce cost.
To realize above-mentioned purpose of utility model, a kind of cell piece of the utility model offer, including silicon chip and being set to described
The positive grid line of silicon chip surface, the anode grid line includes several main grids being mutually parallel and the secondary grid perpendicular to the main grid,
The height of the anode grid line relatively described silicon chip surface is set as 12~16 μm, and the width of the main grid be set as 0.1~
0.3mm；The number of the main grid is set as 9 and wherein one main grids and is located on the center line of the silicon chip.
As a further improvement of the utility model, adjacent to the main grid of the silicon chip side and the silicon chip respective side edge
Distance is less than the spacing of adjacent two main grids.
The spacing of the adjacent main grid is set as 16.5~19mm as a further improvement of the utility model,；Neighbouring institute
The main grid for stating silicon chip side is set as 10~16mm at a distance from the silicon chip respective side edge.
The spacing of adjacent two main grids is consistent as a further improvement of the utility model,.
The silicon chip has the first side, parallel for being parallel to the main grid as a further improvement of the utility model,
Bevel edge in the second side of the secondary grid and the connection first side and second side, the bevel edge is along the secondary grid
The length of extending direction is less than the main grid at a distance from first side.
The positive grid line further includes spaced several along the main grid as a further improvement of the utility model,
Pad.
The pad includes the first pad of neighbouring corresponding main grid head and end as a further improvement of the utility model,
And the second pad between first pad, first pad are more than the second pad.
The pad includes the first pad of neighbouring corresponding main grid head and end as a further improvement of the utility model,
And the second pad between first pad, first pad and the second pad are smaller than adjacent second pad
Spacing.
The cell piece is set as along the length of the secondary grid extending direction as a further improvement of the utility model,
150~170mm.
The utility model also provides a kind of photovoltaic module, including several battery strings, and the battery strings include several aforementioned electricity
Pond piece and by the cell piece be sequentially connected in series in one welding.
Several battery strings are arranged to front and back along the main grid extending direction as a further improvement of the utility model,
Juxtaposed two groups, battery strings are symmetrically distributed described in two groups, and the photovoltaic module further includes being arranged between two groups of battery strings
Several diodes, two symmetrical battery strings are connected to the same diode.
The welding is round welding as a further improvement of the utility model, the diameter setting of the circle welding
For 0.3~0.45mm.
The spacing of the adjacent cell piece is set as in each battery strings as a further improvement of the utility model,
0.2~0.25mm；The spacing of the adjacent battery strings is set as 0.25~0.35mm.
The photovoltaic module further includes backboard, packaging adhesive film and glass cover-plate as a further improvement of the utility model,
The battery strings are fixed on by packaging adhesive film between backboard and glass cover-plate.
The utility model has the beneficial effects that：The utility model cell piece passes through the overall style and main grid to positive grid line
Structure optimizes, and reduces resistance, increases photoelectric conversion efficiency, while reducing silver paste consumption, reduces cost；And to adopt
While having available power gain with the photovoltaic module of above-mentioned cell piece, structure is more succinct, reduces technology difficulty.
Description of the drawings
Fig. 1 is the plane structure chart of one better embodiment of the utility model cell piece；
Fig. 2 is the plane structure chart of another better embodiment of the utility model cell piece；
Fig. 3 is the planar structure schematic diagram using the photovoltaic module of cell piece in Fig. 1；
Fig. 4 is the close-up schematic view of photovoltaic module in Fig. 3；
Fig. 5 is the structure schematic diagram of photovoltaic module in Fig. 3；
Fig. 6 is photovoltaic module in Fig. 5 along the diagrammatic cross-section in the directions A-A；
Fig. 7 is the planar structure schematic diagram using the photovoltaic module of cell piece in Fig. 2；
Fig. 8 is that the utility model photovoltaic module shows from power contrast of other photovoltaic modulies in different positive grid line height
It is intended to；
Fig. 9 is that the utility model photovoltaic module is shown from other photovoltaic modulies using the power contrast of different welding specification conditions
It is intended to；
Figure 10 is that power contrast of the utility model photovoltaic module from other photovoltaic modulies in different thin grid quantity terms shows
It is intended to；
Figure 11 is power contrast's schematic diagram of the utility model photovoltaic module and other photovoltaic modulies.
Specific implementation mode
The utility model is described in detail below with reference to embodiment shown in the drawings.But the embodiment is not
Limit the utility model, structure that those skilled in the art are made according to the embodiment, method or functionally
Transformation is all contained in the scope of protection of the utility model.
Shown in referring to Fig.1, the cell piece 100 includes silicon chip 10, is set to 10 surface of the silicon chip and to collect electricity
The positive grid line of stream, the anode grid line includes several main grids 21 and the secondary grid 22 perpendicular to the main grid 21.The main grid 21
Number be set as 9 and wherein one main grids 21 and be located on the center line of the silicon chip 10.
The height on relatively described 10 surface of silicon chip of the anode grid line is set as 12~16 μm.The width of the main grid 21 is set
It is set to 0.1~0.3mm, the width of main grid 21 described herein is preferably 0.2mm.The main grid 21 of neighbouring 10 side of the silicon chip and institute
The distance for stating 10 respective side edge of silicon chip is less than the spacing of adjacent two main grids 21.Specifically, adjacent two main grids 21
Spacing is consistent and the spacing of the adjacent main grid 21 is set as 16.5~19mm；The main grid 21 of neighbouring 10 side of the silicon chip
It is set as 10~16mm at a distance from 10 respective side edge of the silicon chip.
The anode grid line further includes along the spaced several pads of the main grid 21 23.The pad 23 includes neighbouring
The first pad 231 and the second pad 232 between first pad 231 of corresponding 21 head and end of main grid, described the
One pad 231 is more than the second pad 232.The distance between adjacent described second pad 232 is consistent, and first pad 231
With the spacing for being smaller than adjacent second pad 232 of the second pad 232.Thereby, the main grid 21 is in follow-up welding system
Connect with the weldering of welding in journey more stable.Except this, the both ends of the main grid 21 are in that bifurcated is arranged, to avoid the neighbouring silicon chip
21 end section of main grid at 10 edges interferes in subsequently welding processing procedure with welding, and then prevents 10 edge of the silicon chip from going out
Existing hidden rhegma wound or electric leakage.
In the present embodiment, the cell piece 100 is set as half chip polycrystalline silicon battery plate, the half chip polysilicon electricity
Pond piece is set as 150~170mm along the length of 22 extending direction of the secondary grid.First pad, 231 and second pad 232 is
It is rectangular, and first pad, 231 and second pad 232 is set as 1mm along the width of 22 extending direction of the secondary grid, it is described
The 231 of first pad are set as 1.2mm along the width of 21 extending direction of main grid, and second pad 232 is along 21 side of extension of main grid
To width be set as 0.7mm.
It is another embodiment of the utility model referring to Fig. 2,100 ＇ of the cell piece is half chip Monocrystalline silicon cell piece, institute
State 100 ＇ of cell piece include 10 ＇ of silicon chip, 21 ＇ of main grid, pair 22 ＇ of grid that are set to 10 surfaces ＇ of silicon chip and along 21 intervals ＇ of the main grid
23 ＇ of several pads being arranged.10 ＇ of the silicon chip, which has, to be parallel to 11 ＇ of first side of 21 ＇ of the main grid, is parallel to the pair
12 ＇ of second side of 22 ＇ of grid and 13 ＇ of bevel edge, 13 ＇ of the bevel edge of connection 11 ＇ of first side and 12 ＇ of second side
Be less than along the development length of the secondary 22 ＇ extending directions of grid 11 ＇ of first side of 21 ＇ of the main grid and 10 ＇ of the silicon chip away from
From.Wherein, the half chip polycrystalline silicon battery plate addressed in above-described embodiment, half chip Monocrystalline silicon cell piece are respectively by corresponding complete
Whole cell piece cuts to obtain along the extending direction of secondary grid 22,22 ＇.
Join shown in Fig. 3 to Fig. 6, the utility model also provides a kind of photovoltaic module 200, including glass cover-plate 201, backboard
202, several battery strings 203 being packaged in EVA adhesive film (not shown), set along the glass cover-plate 201 and the periphery of backboard 202
The frame 204 set.Each battery strings 201 include being sequentially connected in series in integrated several cell pieces 100 by welding 205, each
100 quantity of cell piece in the battery strings 203 is set as 8~12.The photovoltaic module 200 further includes the different batteries of connection
The busbar 206 of string 203, the busbar 206 weld the end for being connected in the welding 205.
Herein, several battery strings 203 are arranged to front and back juxtaposed along 21 extending direction of main grid of the cell piece 100
Two groups, battery strings 203 described in two groups are symmetrically distributed.The photovoltaic module further includes being arranged between two groups of battery strings 203
Several diodes (not shown), two symmetrical battery strings 203 are connected to the same diode.The photovoltaic module
200 further include the terminal box 207 for accommodating the diode, and the terminal box 207 is fixedly installed in the outside of backboard 202,
And the terminal box 207 is arranged between battery strings 203 described in two groups.
Here, the quantity of battery strings 203 is set as 6 strings, the diode and terminal box 207 in each group of battery strings 203
Number be set as 3.The diode one-to-one correspondence is contained in different terminal boxes 207, and the terminal box 207 is along cross
It is arranged to uniform intervals；Battery strings 203 described in same group are transversely arranged in series as three batteries two-by-two by busbar 206
Group, and each battery pack is respectively connected to the different diodes.Transversely it is set to two terminal boxes 207 at both ends
It is also respectively connected with and is provided with external cable 208, to be connected with external circuit.
Preferably, the spacing of the adjacent cell piece 100 is set as 0.2~0.25mm in each battery strings 203；Edge
The spacing of the adjacent battery strings of 22 extending direction of secondary grid of the cell piece 100 is set as 0.25~0.35mm.Also, institute
Welding 205 is stated using round welding, the diameter of the circle welding is set as 0.3~0.45mm.
It show 200 ＇ of photovoltaic module that another embodiment of the utility model is provided, including several battery strings referring to Fig. 7
203 ＇, difference place are that 203 ＇ of the battery strings is connected by several 100 ＇ of the cell piece and are made.
To further illustrate the opto-electronic conversion performance of the cell piece 100,100 ＇ and photovoltaic module 200,200 ＇, by photovoltaic
Component 200 carries out performance simulation with other photovoltaic modulies and compares, and herein, other photovoltaic modulies are used with different main grid quantity
Cell piece.Join shown in Fig. 8, increases with positive grid line height, the photovoltaic module 200 and the transfer efficiency of other photovoltaic modulies are equal
It increases, but when positive grid line height is more than 12 μm, the utility model photovoltaic module 200 is showed with better performance.
Join shown in Fig. 9, using a diameter of 0.35mm or so welding when, the photovoltaic module 200 is opposite to have best opto-electronic conversion
Performance.Join shown in Figure 10, when the secondary grid quantity of cell piece used by each photovoltaic module is set as 60~65, corresponding photovoltaic group
The opto-electronic conversion performance performance of part is preferable, and the utility model photovoltaic module 200 is showed with better performance.
As shown in figure 11, power higher of the photovoltaic module 200 compared to other photovoltaic modulies.Wherein, the photovoltaic
Component 200 and the positive grid line height of other photovoltaic modulies are disposed as 14 μm, and welding is all made of the circle of a diameter of 0.35mm
Welding, and 22 quantity of secondary grid of cell piece 100 used by photovoltaic module 200 is set as 64, and other photovoltaic modulies are adopted
The secondary grid quantity of cell piece is likewise provided as 64.According to above-mentioned comparing result, it will be apparent that, the utility model photovoltaic module
200 opto-electronic conversion performance is better than other photovoltaic modulies using the cell piece with different main grid quantity.
In conclusion the utility model cell piece 100,100 ＇ pass through the overall style and the number of main grid 21 to positive grid line
Amount, structure optimize, and reduce resistance, increase photoelectric conversion efficiency, while reducing silver paste consumption, reduce cost；Accordingly
Photovoltaic module 200,200 ＇ are while have available power gain, structure is more succinct, reduces technology difficulty.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiment of understanding.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body illustrates that they are all without departing from made by the utility model skill spirit not to limit the scope of protection of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
Claims (13)
1. a kind of cell piece, including silicon chip and the positive grid line for being set to the silicon chip surface, the anode grid line includes several
The main grid being mutually parallel and the secondary grid perpendicular to the main grid, it is characterised in that：The relatively described silicon chip surface of the anode grid line
Height be set as 12~16 μm, and the width of the main grid is set as 0.1~0.3mm；The number of the main grid is set as 9
And wherein a main grid is located on the center line of the silicon chip.
2. cell piece according to claim 1, it is characterised in that：The main grid of the neighbouring silicon chip side and the silicon chip phase
The distance of side is answered to be less than the spacing of adjacent two main grids.
3. cell piece according to claim 2, it is characterised in that：The spacing of the adjacent main grid is set as 16.5~
19mm；The main grid of the neighbouring silicon chip side is set as 10~16mm at a distance from the silicon chip respective side edge.
4. cell piece according to claim 1, it is characterised in that：The spacing of adjacent two main grids is consistent.
5. cell piece according to claim 1, it is characterised in that：The silicon chip has the first side for being parallel to the main grid
The bevel edge on side, the second side for being parallel to the secondary grid and the connection first side and second side, the bevel edge edge
The length of the pair grid extending direction is less than the main grid at a distance from first side.
6. cell piece according to claim 1, it is characterised in that：The anode grid line further includes being set along the main grid interval
Several pads set.
7. cell piece according to claim 6, it is characterised in that：The pad includes neighbouring corresponding main grid head and end
First pad and the second pad between first pad, first pad are more than the second pad.
8. cell piece according to claim 6, it is characterised in that：The pad includes neighbouring corresponding main grid head and end
First pad and the second pad between first pad, first pad are adjacent with being smaller than for the second pad
The spacing of second pad.
9. cell piece according to claim 1, it is characterised in that：Length of the cell piece along the secondary grid extending direction
It is set as 150~170mm.
10. a kind of photovoltaic module, including several battery strings, it is characterised in that：The battery strings include several such as claim 1-9
Any one cell piece and by the cell piece be sequentially connected in series in one welding.
11. photovoltaic module according to claim 10, it is characterised in that：Several battery strings are along the main grid extension side
Juxtaposed two groups front and back to being arranged to, battery strings are symmetrically distributed described in two groups, and the photovoltaic module further includes being arranged two
Several diodes between group battery strings, two symmetrical battery strings are connected to the same diode.
12. photovoltaic module according to claim 10, it is characterised in that：The welding is round welding, the round weldering
The diameter of band is set as 0.3~0.45mm.
13. photovoltaic module according to claim 10, it is characterised in that：The adjacent cell piece in each battery strings
Spacing be set as 0.2~0.25mm；The spacing of the adjacent battery strings is set as 0.25~0.35mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721909222.0U CN207834321U (en) | 2017-12-29 | 2017-12-29 | Cell piece and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721909222.0U CN207834321U (en) | 2017-12-29 | 2017-12-29 | Cell piece and photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207834321U true CN207834321U (en) | 2018-09-07 |
Family
ID=63391081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721909222.0U Active CN207834321U (en) | 2017-12-29 | 2017-12-29 | Cell piece and photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207834321U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022992A (en) * | 2017-12-29 | 2018-05-11 | 苏州阿特斯阳光电力科技有限公司 | Cell piece and photovoltaic module |
-
2017
- 2017-12-29 CN CN201721909222.0U patent/CN207834321U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022992A (en) * | 2017-12-29 | 2018-05-11 | 苏州阿特斯阳光电力科技有限公司 | Cell piece and photovoltaic module |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee after: CSI Cells Co.,Ltd. Patentee after: Changshu Artes Sunshine Power Technology Co.,Ltd. Patentee after: Atlas sunshine Power Group Co.,Ltd. Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee before: CSI Cells Co.,Ltd. Patentee before: Changshu Artes Sunshine Power Technology Co.,Ltd. Patentee before: CSI SOLAR POWER GROUP Co.,Ltd. |