CN202473940U - Rear-surface-passivated solar battery structure - Google Patents
Rear-surface-passivated solar battery structure Download PDFInfo
- Publication number
- CN202473940U CN202473940U CN2012200600331U CN201220060033U CN202473940U CN 202473940 U CN202473940 U CN 202473940U CN 2012200600331 U CN2012200600331 U CN 2012200600331U CN 201220060033 U CN201220060033 U CN 201220060033U CN 202473940 U CN202473940 U CN 202473940U
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- solar battery
- aluminium paste
- fluting
- passivating
- edge
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Abstract
The utility model relates to a rear-surface-passivated solar battery structure. The battery structure is that a rear-surface passivation film is arranged at the back of a solar battery, slots are formed on the rear-surface passivation film, aluminium paste covers the slots on the passivation film of the rear-surface-passivated solar battery while not covering the while rear surface, and the aluminium paste is sintered to form a local aluminium rear surface field structure. The utility model has the benefits that the local aluminium rear surface field structure can be adopted to improve the mechanical property of the battery, reduce the bending degree of the sintered battery and simultaneously reduce the rear-surface voidage of the rear-surface-passivated solar battery; and meanwhile, a lot of Al paste resources are saved, the manufacturing cost is lowered and the industrial competitiveness is improved accordingly.
Description
Technical field
The utility model relates to a kind of back of the body passivating solar battery structure.
Background technology
Back of the body passivating solar battery is the developing direction of crystal-silicon solar cell, through plate one deck passivating film at back of solar cell, can improve minority carrier life time, thereby improves battery efficiency.The mode of localized metallic contact is taked in the metallization at the back of the body passivating solar battery back side; Mode through using laser or etch paste is slotted or perforate on passivating film; Print the AL slurry then and carry out sintering, the AL slurry that the back printing is whole usually causes battery crooked in sintering; Be unfavorable for that simultaneously slurry is filled in the fluting, as shown in Figure 1.
The utility model content
The utility model technical problem to be solved is: a kind of back of the body passivating solar battery structure is provided, the degree of crook behind the minimizing battery sintering.
The utility model solves the technical scheme that its technical problem adopted: a kind of back of the body passivating solar battery structure; Cover back of the body passivating film at the back side of solar cell; On back of the body passivating film, slot; Aluminium paste covers the fluting on the back of the body passivating film, does not cover the entire back zone simultaneously, and the aluminium paste sintering forms local aluminum back of the body electric field structure.
Fluting on the back of the body passivating film is the linear pattern that is parallel to each other, and the fluting spacing is 0.5mm～2mm, and groove width is 50～100um, and the width that covers the aluminium paste of slotting is than the wide 100um-200um of groove width, and the aluminium paste sintering forms line style local aluminum back of the body electric field structure.
Have the edge aluminium paste at the edge of back of solar cell, each the bar aluminium paste that covers fluting extends to the edge of solar cell, forms with the edge aluminium paste to be connected.
Long electrode or the segmented electrode that intersects vertically with line style local aluminum back of the body electric field structure is set at the back side of back of the body passivating solar battery.
The beneficial effect of the utility model is: adopt local aluminum back of the body electric field structure can improve the mechanical property of battery, the degree of crook behind the minimizing battery sintering reduces the back voidage of carrying on the back passivating solar battery simultaneously; Can practice thrift simultaneously a large amount of AL slurry resources, reduce production costs, improve industrial competition.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the sketch map of tradition back of the body passivating solar battery structure;
Fig. 2 is the sketch map of the back of the body passivating solar battery structure of the utility model;
Fig. 3 is the schematic rear view of the back of the body passivating solar battery structure with long electrode of the utility model;
Fig. 4 is the schematic rear view of the back of the body passivating solar battery structure with segmented electrode of the utility model;
Among the figure, 1. carry on the back passivating film, 2. local aluminum back of the body electric field structure, 3. electrode.
Embodiment
Shown in Fig. 3 and 4 and 5, a kind of back of the body passivating solar battery structure covers back of the body passivating film 1 at the back side of solar cell; Fluting on back of the body passivating film 1; Aluminium paste covers the fluting on the back of the body passivating film 1, does not cover the entire back zone simultaneously, and the aluminium paste sintering forms local aluminum back of the body electric field structure 2.
Fluting on the back of the body passivating film 1 is the linear pattern that is parallel to each other, and the fluting spacing is 0.5mm～2mm, and groove width is 50～100um, and the width that covers the aluminium paste of slotting is than the wide 100um-200um of groove width, and the aluminium paste sintering forms line style local aluminum back of the body electric field structure 2.Have the edge aluminium paste at the edge of back of solar cell, each the bar aluminium paste that covers fluting extends to the edge of solar cell, forms with the edge aluminium paste to be connected.
Claims (4)
1. carry on the back the passivating solar battery structure for one kind; Cover back of the body passivating film (1) at the back side of solar cell, go up fluting at back of the body passivating film (1), it is characterized in that: aluminium paste covers the fluting on the back of the body passivating film (1); Do not cover simultaneously the entire back zone, the aluminium paste sintering forms local aluminum back of the body electric field structure (2).
2. back of the body passivating solar battery structure according to claim 1; It is characterized in that: the fluting on the described back of the body passivating film (1) is the linear pattern that is parallel to each other; The fluting spacing is 0.5mm～2mm; Groove width is 50～100um, and the width that covers the aluminium paste of slotting is than the wide 100um-200um of groove width, and the aluminium paste sintering forms line style local aluminum back of the body electric field structure (2).
3. back of the body passivating solar battery structure according to claim 2 is characterized in that: have the edge aluminium paste at the edge of back of solar cell, each the bar aluminium paste that covers fluting extends to the edge of solar cell, forms with the edge aluminium paste to be connected.
4. according to claim 2 or 3 described back of the body passivating solar battery structures, it is characterized in that: the back side at back of the body passivating solar battery is provided with long electrode (3) or the segmented electrode (3) that intersects vertically with line style local aluminum back of the body electric field structure (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200600331U CN202473940U (en) | 2012-02-23 | 2012-02-23 | Rear-surface-passivated solar battery structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200600331U CN202473940U (en) | 2012-02-23 | 2012-02-23 | Rear-surface-passivated solar battery structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473940U true CN202473940U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200600331U Expired - Lifetime CN202473940U (en) | 2012-02-23 | 2012-02-23 | Rear-surface-passivated solar battery structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN202473940U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300019A (en) * | 2013-07-15 | 2015-01-21 | 茂迪股份有限公司 | Solar cell, module thereof and manufacturing method thereof |
| CN105576051A (en) * | 2016-02-22 | 2016-05-11 | 苏州阿特斯阳光电力科技有限公司 | Deposition method of crystalline silicon battery back electrode, and obtained crystalline silicon battery |
| CN106816480A (en) * | 2015-12-01 | 2017-06-09 | 英稳达科技股份有限公司 | The solar cell and its manufacture method of tool emitter-base bandgap grading and passivating back |
| CN106952970A (en) * | 2017-03-24 | 2017-07-14 | 苏州腾晖光伏技术有限公司 | A kind of PERC batteries and preparation method thereof |
| CN107516683A (en) * | 2017-08-04 | 2017-12-26 | 张家港协鑫集成科技有限公司 | Rear surface of solar cell partial metallic contact method and cell manufacturing method |
| CN109326656A (en) * | 2017-07-27 | 2019-02-12 | 京瓷株式会社 | Solar cell device and solar cell module |
-
2012
- 2012-02-23 CN CN2012200600331U patent/CN202473940U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300019A (en) * | 2013-07-15 | 2015-01-21 | 茂迪股份有限公司 | Solar cell, module thereof and manufacturing method thereof |
| CN104300019B (en) * | 2013-07-15 | 2016-08-17 | 茂迪股份有限公司 | Solar cell, module thereof and manufacturing method thereof |
| CN106816480A (en) * | 2015-12-01 | 2017-06-09 | 英稳达科技股份有限公司 | The solar cell and its manufacture method of tool emitter-base bandgap grading and passivating back |
| CN105576051A (en) * | 2016-02-22 | 2016-05-11 | 苏州阿特斯阳光电力科技有限公司 | Deposition method of crystalline silicon battery back electrode, and obtained crystalline silicon battery |
| CN106952970A (en) * | 2017-03-24 | 2017-07-14 | 苏州腾晖光伏技术有限公司 | A kind of PERC batteries and preparation method thereof |
| CN109326656A (en) * | 2017-07-27 | 2019-02-12 | 京瓷株式会社 | Solar cell device and solar cell module |
| CN107516683A (en) * | 2017-08-04 | 2017-12-26 | 张家港协鑫集成科技有限公司 | Rear surface of solar cell partial metallic contact method and cell manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213031, No. 2, Tianhe Road, Xinbei Industrial Park, Jiangsu, Changzhou Patentee after: TRINA SOLAR Co.,Ltd. Address before: 213031, No. 2, Tianhe Road, Xinbei Industrial Park, Jiangsu, Changzhou Patentee before: trina solar Ltd. Address after: 213031, No. 2, Tianhe Road, Xinbei Industrial Park, Jiangsu, Changzhou Patentee after: trina solar Ltd. Address before: 213031, No. 2, Tianhe Road, Xinbei Industrial Park, Jiangsu, Changzhou Patentee before: CHANGZHOU TRINA SOLAR ENERGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |