CN208507689U - Solar battery sheet and photovoltaic module - Google Patents
Solar battery sheet and photovoltaic module Download PDFInfo
- Publication number
- CN208507689U CN208507689U CN201821172556.9U CN201821172556U CN208507689U CN 208507689 U CN208507689 U CN 208507689U CN 201821172556 U CN201821172556 U CN 201821172556U CN 208507689 U CN208507689 U CN 208507689U
- Authority
- CN
- China
- Prior art keywords
- solar battery
- grid line
- battery sheet
- secondary grid
- distance
- 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
- 238000009792 diffusion process Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model provides a kind of solar battery sheet, including at least one main gate line；Several secondary grid lines, in the secondary grid line for being sequentially distributed along the solar battery sheet center, and being sequentially distributed outward at any three, the distance for being located in the middle secondary grid line of the secondary grid line on the inside of it is less than the distance of its secondary grid line apart from outside；Therefore the distribution density of the secondary grid line of solar battery sheet central area is greater than the distribution density of the secondary grid line of fringe region, and the external resistance of central area is less than the external resistance of fringe region；So that the series resistance of the central area and series resistance gap of fringe region is smaller or solar battery sheet without gap.
Description
Technical field
The utility model relates to connecting for photovoltaic art more particularly to a kind of series resistance of central area and fringe region
Resistance difference is away from solar battery sheet and photovoltaic module smaller or without gap.
Background technique
Existing solar battery sheet usually diffuses to form PN junction on silicon wafer, then silk-screen printing main gate line, parallel again
And several secondary grid lines equidistantly arranged.
Due to spreading, after forming PN junction, square resistance is big among silicon wafer, and the square resistance at edge is small, square electricity
Resistance is properly termed as interior resistance；And spacing is consistent between existing grid line structure, external resistance is consistent；The sum of interior resistance and external resistance structure
At the series resistance of cell piece.Therefore, existing grid line structure, so that intermediate series resistance is big on entire silicon wafer, surrounding series electrical
It hinders small.
In view of this, being asked it is necessary to provide a kind of improved solar battery sheet and photovoltaic module with solving above-mentioned technology
Topic.
Utility model content
The purpose of this utility model is to provide the series resistance of a kind of series resistance of central area and fringe region is poor
Away from solar battery sheet and photovoltaic module smaller or without gap.
To realize above-mentioned purpose of utility model, the utility model provides a kind of solar battery sheet, including at least one
Main gate line；Several secondary grid lines, are sequentially distributed, and be sequentially distributed at any three outward along the solar battery sheet center
Secondary grid line in, be located in the middle secondary grid line of the secondary grid line on the inside of it distance be less than its secondary grid line apart from outside away from
From.
It is outside from center as a further improvement of the utility model, spacing between several secondary grid lines at etc.
Differential is gradually increased, set first of the center position of solar battery sheet secondary grid line and adjacent Article 2 pair grid line it
Between distance be a, Article 2 pair grid line and be a+b with the distance between its adjacent Article 3 pair grid line in outside, b is Article 2
The difference of distance and first distance between Article 2 between Article 3 pair grid line；Aforementioned any three pairs being sequentially distributed
In grid line, the distance of the secondary grid line on the inside of it that is located in the middle secondary grid line is (a+nb) mm, described to be located in the middle
Distance (a+nb+b) mm of secondary grid line of the secondary grid line on the outside of it, n are the integer more than or equal to 0.
A is between 1mm~2mm as a further improvement of the utility model,.
B is between 1mm~2mm as a further improvement of the utility model,.
Several secondary grid lines are arc-shaped as a further improvement of the utility model, and with the solar battery
The center of piece is arc core, and has spacing between every two adjacent secondary grid lines, and several spacing are gradually incremented by from inside to outside,
So that distribution density of the pair grid line on solar battery sheet surface gradually reduces from inside to outside.
Several spacing increase identical size in each be incremented by as a further improvement of the utility model,.
The secondary grid line is closed annular grid line and/or semi-circular grid line as a further improvement of the utility model,.
The solar battery sheet includes at least one across the solar energy as a further improvement of the utility model,
The main gate line at the center of cell piece.
The solar battery includes at least two main grids disposed in parallel as a further improvement of the utility model,
Line, and at least one main gate line passes through the center of the solar battery sheet.
To realize above-mentioned purpose of utility model, the utility model also provides a kind of photovoltaic module, including as described above too
Positive energy cell piece.
The beneficial effects of the utility model are: the solar battery sheet of the utility model, along the solar battery sheet
The heart is outside, and in any three secondary grid lines, the distance for being located in the middle secondary grid line of the secondary grid line on the inside of it is less than outside its distance
The secondary grid line distance of side, therefore the distribution density of the secondary grid line of solar battery sheet central area is greater than the secondary grid line of fringe region
Distribution density, the external resistance of central area is less than the external resistance of fringe region；So that the series resistance of central area with
The series resistance gap of fringe region is smaller or solar battery sheet without gap.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of solar battery sheet in one preferred embodiment of the utility model；
Specific embodiment
The utility model is described in detail below with reference to specific embodiment shown in the drawings.But these embodiment party
Formula is not intended to limit the utility model, structure that those skilled in the art are made according to these embodiments, method or
Transformation functionally is all contained in the protection scope of the utility model.
Refering to Figure 1, being the solar battery sheet 100 of the utility model preferred embodiment comprising at least one
Main gate line 1 and several secondary grid lines 2；Several pair grid lines 2 are sequentially distributed outward along 100 center of solar battery sheet, and
In any three secondary grid lines 2 being sequentially distributed, the distance for being located in the middle secondary grid line 2 of the secondary grid line 2 on the inside of it is less than it
The distance of secondary grid line 2 apart from outside.
Wherein, the center of solar battery sheet 100 only one, and its edge is made of infinite position point；" along described
100 center of solar battery sheet is outside " it refers to: the side that any one point on edge extends from solar cell piece center
To.
In the solar battery sheet 100, the distance between secondary grid line 2 of central area is less than the secondary grid line 2 of fringe region
The distance between, it is understood that it is the density that the density of the secondary grid line 2 in center region is greater than the secondary grid line 2 of fringe region, because
Resistance on the charge movement of this central area to secondary grid line 2 is less than the resistance on the charge movement to secondary grid line 2 of fringe region,
The external resistance of central area is less than the external resistance of fringe region；So that the series resistance of intermediate region and the string of fringe region
Join resistance difference away from smaller or without gap.
Preferably, between the extending direction of the secondary grid line 2, each pair grid line 2 secondary grid line 2 adjacent thereto away from
From constant；The series resistance consistency of each region is higher.
Specifically, outside from center, spacing is all had between every two adjacent secondary grid lines 2, between several pair grid lines 2
Spacing at etc. differentials be gradually increased, with the variation of interior resistance that is formed when diffusion on the contrary, can guarantee series resistance to a greater degree
Consistency.
For example, the secondary grid line 2 of first of the center position of solar battery sheet 100 and adjacent Article 2 pair grid line 2
The distance between be a, and Article 2 pair grid line 2 and be a+b with the distance between its adjacent Article 3 pair grid line in outside, b is
The difference of distance and first distance between Article 2 between Article 2 and Article 3 pair grid line 2；Therefrom, it may be appreciated that
, the distance of the secondary grid line 2 on the inside of it that is located in the middle secondary grid line 2 is (a+nb) mm, this is located in the middle secondary grid
Distance (a+nb+b) mm of secondary grid line 2 of the line 2 on the outside of it, n are the integer more than or equal to 0.
The distance between adjacent secondary grid line 2 is not specially limited, and can refer in the present embodiment, a be 1mm~2mm it
Between；B is between 1mm~2mm；Charge can either be collected well, and can guarantee the consistency of series resistance.
Several secondary grid lines 2 are arc-shaped, and using the center of the solar battery sheet 100 as arc core, and every two
There is spacing, several spacing are gradually incremented by from inside to outside, so that the pair grid line 2 is in the sun between adjacent secondary grid line 2
The distribution density on 100 surface of energy cell piece gradually reduces from inside to outside.The secondary grid line 2 of arc is successively arranged, and is formed when with diffusion
The variation tendency of square resistance match so that the series resistance gap of the series resistance of intermediate region and fringe region
It is smaller or without gap.
Preferably, several spacing, from center to it is external every time be incremented by when increase identical size；Namely any two
Difference between a adjacent spacing is all the same.Variation with the interior resistance formed when diffusion is on the contrary, can be to a greater degree
Guarantee the consistency of series resistance.
In any one solar battery sheet 100 as described above, the pair grid line 2 is closed annular grid line 21；Or
The pair grid line 2 can also be semi-circular grid line, and the finger of semi-circular grid line 22 herein cannot constitute a complete ring certainly
One section of grid line, not refers in particular to semicircle grid line etc.；Alternatively, usually solar battery sheet 100 is rectangular or rectangle, center
Secondary grid line 2 is closed annular grid line 21, and the secondary grid line 2 at edge is set since the shape of solar battery sheet 100 limits
It is set to semi-circular grid line 22.Closed annular grid line 21 can be annulus grid line shown in FIG. 1, or polygon ring grid
The annular grid line of line or other arbitrary shapes.
In the solar battery sheet 100 with annular grid line 21 and/or semi-circular grid line 22, all pair grid lines 2 are substantially
Presentation comes from center to the radial of edge-diffusion；The distance between adjacent two annular grid lines 21 are along the annular grid line 21
Extending direction remains unchanged；And it is outside from center, the spacing between several adjacent two ring grid lines 21 becomes larger, the entire sun
Series resistance on energy cell piece 100 is more uniform.
Correspondingly, the solar battery sheet 100 includes at least one center for passing through the solar battery sheet 100
Main gate line 1；Or the solar battery includes at least two main gate lines 1 disposed in parallel, and at least one main gate line 1 passes through
The center of the solar battery sheet 100；To guarantee that all secondary grid lines 2 all intersect with main gate line 1.
The photovoltaic module of the utility model includes the series resistance of any one of the above central area and the string of fringe region
Join resistance difference away from smaller or solar battery sheet 100 without gap, other structures and its connection type with it is in the prior art
Photovoltaic module is consistent, repeats no more in this.
In conclusion the solar battery sheet 100 of the utility model, outside along 100 center of solar battery sheet,
In any three secondary grid lines 2, the distance for being located in the middle secondary grid line 2 of the secondary grid line 2 on the inside of it is less than it apart from outside
The distance of secondary grid line 2, thus the series resistance of central area and the series resistance gap of fringe region it is smaller or without gap too
Positive energy cell piece 100.
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 embodiments of understanding.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body explanation, they are all without departing from made by the utility model skill spirit not to limit the protection scope of the utility model
Equivalent implementations or change should be included in the protection scope of the utility model.
Claims (10)
1. a kind of solar battery sheet, it is characterised in that: including
At least one main gate line；
Several secondary grid lines, are sequentially distributed outward along the solar battery sheet center, and be sequentially distributed at any three
In secondary grid line, be located in the middle secondary grid line of the secondary grid line on the inside of it distance be less than its secondary grid line apart from outside away from
From.
2. solar battery sheet according to claim 1, it is characterised in that:, several secondary grid lines outside from center
Between spacing at etc. differentials be gradually increased, set first of the center position of solar battery sheet secondary grid line and adjacent
The distance between Article 2 pair grid line is a, Article 2 pair grid line and the Article 3 pair grid line the distance between adjacent with its outside
For a+b, the difference of b distance and first distance between Article 2 between Article 2 and Article 3 pair grid line；It is aforementioned any
In three secondary grid lines being sequentially distributed, the distance of the secondary grid line on the inside of it that is located in the middle secondary grid line is (a+nb)
Mm, this is located in the middle distance (a+nb+b) mm of secondary grid line of the secondary grid line on the outside of it, and n is the integer more than or equal to 0.
3. solar battery sheet according to claim 2, it is characterised in that: a is between 1mm~2mm.
4. solar battery sheet according to claim 2, it is characterised in that: b is between 1mm~2mm.
5. solar battery sheet according to claim 1, it is characterised in that: several secondary grid lines are arc-shaped, and with
The center of the solar battery sheet be arc core, and between every two adjacent secondary grid lines have spacing, several spacing by
Gradually it is incremented by from inside to outside, so that distribution density of the pair grid line on solar battery sheet surface gradually reduces from inside to outside.
6. solar battery sheet according to claim 5, it is characterised in that: several spacing increase in each be incremented by
Add identical size.
7. solar battery sheet described in any one according to claim 1~6, it is characterised in that: the pair grid line is closing
Annular grid line and/or semi-circular grid line.
8. solar battery sheet according to claim 7, it is characterised in that: the solar battery sheet includes at least one
Main gate line across the center of the solar battery sheet.
9. solar battery sheet according to claim 7, it is characterised in that: the solar battery is flat including at least two
The main gate line of row setting, and at least one main gate line passes through the center of the solar battery sheet.
10. a kind of photovoltaic module, it is characterised in that: including solar battery sheet as described in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821172556.9U CN208507689U (en) | 2018-07-23 | 2018-07-23 | Solar battery sheet and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821172556.9U CN208507689U (en) | 2018-07-23 | 2018-07-23 | Solar battery sheet and photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208507689U true CN208507689U (en) | 2019-02-15 |
Family
ID=65290225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821172556.9U Active CN208507689U (en) | 2018-07-23 | 2018-07-23 | Solar battery sheet and photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208507689U (en) |
-
2018
- 2018-07-23 CN CN201821172556.9U patent/CN208507689U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2013074530A3 (en) | High efficiency multijunction solar cells | |
| CN102709337A (en) | Back-contact solar cell, solar module using back-contact solar cell and production method of solar module | |
| US11018268B2 (en) | Solar cells for shingled solar cell module, shingled solar cell module, and method of making solar cells | |
| CN203192803U (en) | Crystalline silicon solar cell | |
| CN105679849B (en) | A kind of crystal silicon solar batteries | |
| CN208507689U (en) | Solar battery sheet and photovoltaic module | |
| TWM426876U (en) | Solar cell | |
| Kashyap et al. | Process and device simulations aimed at improving the emitter region performance of silicon PERC solar cells | |
| CN104124287B (en) | A kind of single crystal silicon solar cell back surface gate line electrode structure and single crystal silicon solar cell | |
| CN109888058A (en) | A kind of solar battery and its manufacturing method | |
| CN103337526A (en) | Front-side electrode layout structure of solar cell | |
| CN203085565U (en) | Novel solar battery positive electrode | |
| CN203071088U (en) | Positive electrode drawing and archives of solar cell | |
| CN103018564A (en) | Method for testing diffused layer resistance of finished cell | |
| TWI570947B (en) | Solar cell with inclined finger electrodes | |
| CN206763493U (en) | A kind of gaily decorated basket for silicon chip | |
| CN107785444A (en) | Solar cell | |
| CN207165583U (en) | Solar battery sheet and solar cell module | |
| CN208577782U (en) | Realize PECVD silicon nitride around the carrier structure of plating control | |
| CN104319297A (en) | Solar battery piece | |
| CN206685399U (en) | A kind of crystal silicon solar battery component | |
| CN204424296U (en) | The upper plated film support plate of solar energy back of the body passivation cell | |
| CN204144275U (en) | A kind of solar battery sheet | |
| CN207676916U (en) | A kind of MWT battery front electrode | |
| CN208077988U (en) | A kind of electrode structure at right side of MWT solar battery sheets |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.88, Xiexin Avenue, Funing Economic Development Zone, Yancheng City, Jiangsu Province Patentee after: Funing atlas sunshine Power Technology Co., Ltd Patentee after: CSI Cells Co.,Ltd. Patentee after: Atlas sunshine Power Group Co.,Ltd. Address before: No.88, Xiexin Avenue, Funing Economic Development Zone, Yancheng City, Jiangsu Province Patentee before: CSI-GCL SOLAR MANUFACTURING (YANCHENG) Co.,Ltd. Patentee before: CSI Cells Co.,Ltd. Patentee before: CSI SOLAR POWER GROUP Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |