CN207542256U - A kind of MWT battery front electrode - Google Patents
A kind of MWT battery front electrode Download PDFInfo
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- CN207542256U CN207542256U CN201721767975.2U CN201721767975U CN207542256U CN 207542256 U CN207542256 U CN 207542256U CN 201721767975 U CN201721767975 U CN 201721767975U CN 207542256 U CN207542256 U CN 207542256U
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- mwt battery
- mwt
- grid
- front electrode
- electrode
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Abstract
The utility model discloses a kind of MWT battery front electrode, including MWT battery electrode hole, MWT battery front electrode main grid and MWT battery front electrode pair grid；With respect to MWT battery electrode hole, by closely to remote, the spacing between MWT battery front electrode pair grid gradually increases.Secondary grid spacing in distal end is big, and proximal end or the secondary grid spacing being directly connected with electrode hole are small.Non- equidistant grid line design, which will reduce the uneven caused string resistance of carrier collection, to be increased, and reduces the recombination rate of carrier.
Description
Technical field
The utility model is related to a kind of front electrodes of the MWT silicon solar cells of optimization, belong to MWT solar battery groups
Part processing technique field.
Background technology
At present, crystal silicon solar technology includes heterojunction solar battery (HIT), back electrode contact silicon solar cell
(IBC), emitter circulating break-through silicon solar cell (EWT), buried contaCt solar Cells tilt the evaporated metal contact silicon sun
Energy battery (OECO) and metal piercing winding silicon solar cell (MWT) etc., wherein MWT battery is because of its efficient, shading-area
Small and better appearance characteristics receive more and more attention.
MWT silicon solar cells are that the energy for being collected front by laser drill passes through battery transfer to cell backside,
Achieve the purpose that improve transfer efficiency to reduce shading-area.Since the positive and negative electrode point of MWT battery piece is distributed in battery
The back side of piece so that the electric current collection of MWT battery piece is different from conventional batteries piece.Front electrode graphic designs are MWT electricity as a result,
One of the key technology in pond.
At present, patent CN201520527578.2 has announced a kind of MWT silicon solar cells front electrode, in battery front side
If the equally distributed arrays of N × N form front electrode, each hole corresponds to a grid line centered on it and forms cruciform pattern
Main grid and the thin grid of several rectangular-ambulatory-planes, thin grid are uniformly arranged (Fig. 1).The MWT silicon solar cells front electrode is ensureing low shading
While area, series resistance is effectively reduced, so as to improve the transfer efficiency of MWT battery and reduce cost.
But preceding MWT silicon solar cells front description there are the defects of：
With respect to MWT battery electrode hole, the secondary gate length in distal end is short, and collected carrier can reach master quickly
Grid, proximal end or the secondary gate length being directly connected with electrode hole are long, and collected carrier needs to transmit could arrive over long distances very much
Up to main grid or electrode hole.String resistance increases caused by equally distributed electrode will cause carrier collection uneven, increases carrier
Recombination rate.
Utility model content
Purpose of utility model：For problems of the prior art with insufficient, the utility model provides a kind of MWT battery
Front electrode.
Technical solution：A kind of MWT battery front electrode, including MWT battery electrode hole, MWT battery front electrode main grid
With MWT battery front electrode pair grid；With respect to MWT battery electrode hole, by closely to remote, between MWT battery front electrode pair grid
Spacing gradually increases.Secondary grid spacing in distal end is big, and proximal end or the secondary grid spacing being directly connected with electrode hole are small.It is non-equidistant
Grid line design will reduce carrier collection it is uneven caused by string resistance increase, reduce the recombination rate of carrier.
Advantageous effect：Compared with prior art, MWT battery front electrode provided by the utility model has following excellent
Point：
Non- equidistant grid line design, which will reduce the uneven caused string resistance of carrier collection, to be increased, and reduces the compound of carrier
Rate.
Description of the drawings
Fig. 1 is MWT front electrodes schematic diagram in the prior art；
Fig. 2 is the MWT front electrode schematic diagrames of the utility model embodiment.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate.
MWT battery front electrode 1, including MWT battery electrode hole 2, MWT battery front electrode main grid 3 and MWT battery just
Face electrode pair grid 4；With respect to MWT battery electrode hole 2, by closely to remote, the spacing between MWT battery front electrode pair grid 4 is gradual
Increase.4 spacing of secondary grid in distal end is big, and proximal end or 4 spacing of secondary grid being directly connected with electrode hole 2 are small.Non- equidistant grid
Line design, which will reduce the uneven caused string resistance of carrier collection, to be increased, and reduces the recombination rate of carrier.
As shown in Fig. 2, opposite MWT battery electrode hole 2, by closely to remote, the spacing between secondary grid 4 is pressed：1:1.1:1.2:
1.3:1.5:1.8 grating spacing arrangement.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, under the premise of the utility model principle is not departed from, several improvement can also be made, these improvement also should be regarded as
The scope of protection of the utility model.
Claims (3)
1. a kind of MWT battery front electrode, including MWT battery electrode hole, MWT battery front electrode main grid and MWT battery just
Face electrode pair grid；It is characterized in that：With respect to MWT battery electrode hole, by closely to remote, between MWT battery front electrode pair grid
Spacing gradually increases.
2. MWT battery front electrode as described in claim 1, it is characterised in that：Close to two pairs of MWT battery electrode hole
Spacing between grid differs.
3. MWT battery front electrode as described in claim 1, it is characterised in that：With respect to MWT battery electrode hole, by closely extremely
Far, the spacing between secondary grid is pressed：1:1.1:1.2:1.3:1.5:1.8 grating spacing arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721767975.2U CN207542256U (en) | 2017-12-18 | 2017-12-18 | A kind of MWT battery front electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721767975.2U CN207542256U (en) | 2017-12-18 | 2017-12-18 | A kind of MWT battery front electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207542256U true CN207542256U (en) | 2018-06-26 |
Family
ID=62618800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721767975.2U Active CN207542256U (en) | 2017-12-18 | 2017-12-18 | A kind of MWT battery front electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207542256U (en) |
-
2017
- 2017-12-18 CN CN201721767975.2U patent/CN207542256U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214028 Xishi Road, Xinwu District, Wuxi City, Jiangsu Province Patentee after: Jiangsu Rituo Photovoltaic Technology Co., Ltd. Address before: 211800 No. 29 Buyue Road, Pukou Economic Development Zone, Nanjing City, Jiangsu Province Patentee before: Nanjing day care PV Polytron Technologies Inc |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190430 Address after: 221300 Binhu Avenue South, Xiangshan Road West, Pizhou High-tech Industrial Development Zone, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Guyang New Energy Technology Co., Ltd. Address before: 214028 Xishi Road, Xinwu District, Wuxi City, Jiangsu Province Patentee before: Jiangsu Rituo Photovoltaic Technology Co., Ltd. |