CN202608172U - Rear panel applied to back-surface field passivation type solar cell - Google Patents
Rear panel applied to back-surface field passivation type solar cell Download PDFInfo
- Publication number
- CN202608172U CN202608172U CN 201220119972 CN201220119972U CN202608172U CN 202608172 U CN202608172 U CN 202608172U CN 201220119972 CN201220119972 CN 201220119972 CN 201220119972 U CN201220119972 U CN 201220119972U CN 202608172 U CN202608172 U CN 202608172U
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- weathering layer
- layer
- base material
- backboard
- adhesive
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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 discloses a rear panel applied to a back-surface field passivation type solar cell. The rear panel comprises a metal foil layer, a first adhesive layer, a first weather-resisting layer, a base material and a second weather-resisting layer; one side of the first weather-resisting layer is laminated and fixedly connected with the metal foil layer through the first adhesive layer, and the other side of the first weather-resisting layer is fixedly connected to one side of the base material; and the other side of the base material is fixedly connected with the second weather-resisting layer. The rear panel for the solar cell is excellent in weather resistance and can protect a solar cell module from being damaged by ultraviolet light and water vapor; and an outgoing line is etched on the metal foil layer, and the etched metal foil layer can be used as an electrode to exert the conduction function, so that the mode that the outgoing line is welded on a silicon wafer in the conventional process is eliminated, the shielding area is reduced, and the conversion efficiency is improved.
Description
Technical field
The utility model belongs to solar module manufacturing technology field, particularly a kind ofly is applied to carry on the back a backboard of passivation type solar cell.
Background technology
Solar cell is a kind of device that directly changes into luminous energy electric energy through photoelectric effect or Photochemical effects.Because solar energy is a kind of cleaning and regenerative resource, in recent years, the application of solar cell has got into civilian technology fields such as industry, commerce, agricultural, communication, household electrical appliance and public utility from high-end technology fields such as military affairs, space flight.Need particularly point out is that it can be distributed in the environment such as outlying district, high mountain, desert, island and rural area and use, thereby can effectively utilize solar energy, saves the high transmission line of electricity of cost for these areas, greatly reduces shop line cost.
Conventional crystal silicon solar batteries is not owing to adopt a back of the body passivating technique; Only use aluminium back of the body field; And significant limitation is arranged aspect compound and the back reflection effect reducing through alusil alloy back of the body surface that oversintering forms; And the alusil alloy district itself is high recombination region, has limited the further raising of battery efficiency.
High conversion efficiency, low cost, the high-efficiency battery technology that is easy to industrialization are the developing direction of solar cell.In recent years; Adopt the battery of high conversion efficiency technology to emerge in an endless stream; For example SE battery (Selective emitter Cell), MWT battery (Metal warp through cell) and EWT battery (Emitter Warp through cell) etc., these high-efficiency batteries have all adopted good passivating technique.Therefore, in order further to improve open-circuit voltage and short circuit current, it is necessary that passivation is carried out on silica-based back of the body surface.
Summary of the invention
In order to reach the encapsulation and the instructions for use of an aforementioned back of the body passivation type solar cell, the utility model provides a kind of backboard that is applied to the back of the body field passivation type solar cell of high conversion efficiency.
The technical scheme that the utility model adopted is: a kind ofly be applied to carry on the back a backboard of passivation type solar cell; Comprise metal foil layer, first adhesive, first weathering layer, base material, second weathering layer; One side of first weathering layer is through the range upon range of and affixed metal foil layer of first adhesive; The another side is fixed in a side of base material, affixed second weathering layer in the another side of base material.
Preferably, first weathering layer is fixed in a side of base material through second adhesive, and the another side of base material is through affixed second weathering layer of the 3rd adhesive.
Preferably, first weathering layer and/or second weathering layer are films.
Further preferred, first weathering layer, second weathering layer are that employing is the film of matrix resin with polyvinyl fluoride, Kynoar, polytrifluorochloroethylene or polyflon.
Preferably, first weathering layer and/or second weathering layer are coatings.
Further preferred, first weathering layer, second weathering layer are that employing is the coating of matrix resin with polyvinyl fluoride, Kynoar, polytrifluorochloroethylene or polyflon.
Preferably, the thickness of first weathering layer, second weathering layer is 20～35 μ m, and the best is 25 μ m.
Preferably, metal forming is Copper Foil, silver foil or goldleaf, and its thickness is 15～35 μ m, and the best is 20 μ m.
Preferably, one or more mixtures that described base material is selected from PETG (PET), polybutylene terephthalate (PBT) (PBT), PEN (PEN) are the base material that matrix resin makes, and thickness is 125～350 μ m.Further preferred, be the base material that matrix resin makes with PET, its thickness is 250 μ m.
Preferably, three layers of adhesive are polyurethane resin or epoxy resin, and its thickness is 10～25 μ m, and the best is 15 μ m.
The backboard of the utility model solar cell has overcome prior art and has had the defective of hanging down conversion efficiency, and it can be applicable to the back of the body field passivation type solar cell of high conversion efficiency.The advantage that it had is: have excellent weather resistance, can protect solar module not destroyed by ultraviolet light and water vapour, improved service life; After metal foil layer etches circuit, can do electrode, play electric action, thereby save traditional handicraft is welded out circuit on silicon chip structure and technology, reduce the shading area, improve transformation efficiency.
Description of drawings
Fig. 1 is the structural representation of embodiment one.
Fig. 2 is the structural representation of embodiment two.
In the diagram: 1-metal foil layer, 2,4, the 6-adhesive, 3-first weathering layer, 5-base material, 7-second weathering layer.
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment the utility model is described further.
Embodiment one: as shown in Figure 1; Present embodiment is applied to carry on the back a backboard of passivation type solar cell and comprises that metal foil layer 1, adhesive 2, first weathering layer 3, adhesive 4, base material 5, adhesive 6, second weathering layer, 7, the first weathering layers 3, second weathering layer 7 are film.One side of first weathering layer 3 is through adhesive layer 2 range upon range of and affixed metal foil layers 1, and the another side is through adhesive 4 applying base materials 5.The another side of base material 5 is through adhesive 6 applyings second weathering layer 7.Metal foil layer 1, adhesive 2, first weathering layer 3, adhesive 4, base material 5, adhesive 6, second weathering layer 7 totally seven layers through the range upon range of and affixed integrated that is.Metal foil layer 1 can be Copper Foil, silver foil or goldleaf, and its thickness is 15～35 μ m, and the best is 20 μ m.First weathering layer 3 and second weathering layer 7 can be to be the film of matrix resin with polyvinyl fluoride, Kynoar, polytrifluorochloroethylene or polyflon, and its thickness is 20～35 μ m, and the best is 25 μ m.Base material 5 can be that one or more mixtures with PETG (PET), polybutylene terephthalate (PBT) (PBT), PEN (PEN) are the base material that matrix resin makes; Thickness is 125～350 μ m, and the best is 250 μ m.Adhesive 2,4,6 can adopt polyurethane resin or epoxy resin, and its thickness is 10～25 μ m, and the best is 15 μ m.
The utility model is applied to carry on the back a backboard of passivation type solar cell; Can carry out etching to the metal foil layer 1 of its upper surface, make circuit, can make electrode; And play the effect of conduction; Thereby saved traditional handicraft is welded out circuit on silicon chip structure and technology, reduced the shading area, improved transformation efficiency.Again because of the having excellent weather resistance of first weathering layer 3 and second weathering layer 7, thereby can protect solar module not destroyed by ultraviolet light and water vapour, prolong the service life of solar module.
Embodiment two: as shown in Figure 2, first weathering layer 3 of present embodiment, second weathering layer 7 are coatings, can be to be the coating of matrix resin with polyvinyl fluoride, Kynoar, polytrifluorochloroethylene or polyflon.First weathering layer 3, second weathering layer 7 directly apply and are fixed in the two sides of base material 5, and need not adhesive.But other content reference implementation example one of present embodiment.
Above embodiment is to the further specifying of the utility model, rather than the protection domain of restriction the utility model.Through the foregoing description, those of ordinary skill in the art carries out conversion, modification in the scope that does not depart from the utility model technical scheme, all fall into the protection domain of the utility model.
Claims (10)
1. one kind is applied to carry on the back a backboard of passivation type solar cell; It is characterized in that comprising metal foil layer, first adhesive, first weathering layer, base material, second weathering layer; One side of first weathering layer is through the range upon range of and affixed metal foil layer of first adhesive; The another side is fixed in a side of base material, affixed second weathering layer in the another side of base material.
2. backboard as claimed in claim 1 is characterized in that: described first weathering layer is fixed in a side of said base material through second adhesive, and the another side of said base material is through affixed described second weathering layer of the 3rd adhesive.
3. according to claim 1 or claim 2 backboard, it is characterized in that: described first weathering layer and/or second weathering layer are films.
4. backboard as claimed in claim 3 is characterized in that: described first weathering layer, second weathering layer are that employing is the film of matrix resin with polyvinyl fluoride, Kynoar, polytrifluorochloroethylene or polyflon.
5. according to claim 1 or claim 2 backboard, it is characterized in that: described first weathering layer and/or second weathering layer are coatings.
6. backboard as claimed in claim 5 is characterized in that: described first weathering layer, second weathering layer are that employing is the coating of matrix resin with polyvinyl fluoride, Kynoar, polytrifluorochloroethylene or polyflon.
7. according to claim 1 or claim 2 backboard, it is characterized in that: the thickness of said first weathering layer, second weathering layer is 20～35 μ m.
8. backboard as claimed in claim 1 is characterized in that: described metal foil layer adopts Copper Foil, silver foil or goldleaf, and thickness is 15～35 μ m.
9. according to claim 1 or claim 2 backboard; It is characterized in that: one or more mixtures that described base material is selected from PETG, polybutylene terephthalate (PBT), PEN are the base material that matrix resin makes, and thickness is 125～350 μ m.
10. backboard as claimed in claim 2 is characterized in that: described first adhesive, second adhesive, the 3rd adhesive are polyurethane resin or epoxy resin, and thickness is 10～25 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220119972 CN202608172U (en) | 2012-03-27 | 2012-03-27 | Rear panel applied to back-surface field passivation type solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220119972 CN202608172U (en) | 2012-03-27 | 2012-03-27 | Rear panel applied to back-surface field passivation type solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202608172U true CN202608172U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220119972 Expired - Lifetime CN202608172U (en) | 2012-03-27 | 2012-03-27 | Rear panel applied to back-surface field passivation type solar cell |
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| Country | Link |
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| CN (1) | CN202608172U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615881A (en) * | 2012-03-27 | 2012-08-01 | 浙江华正新材料股份有限公司 | Back plate applied to back field passivation type solar cell and method for manufacturing back plate |
| CN104505411A (en) * | 2014-12-13 | 2015-04-08 | 乐凯胶片股份有限公司 | Coated type solar battery backboard |
| CN104981910A (en) * | 2012-12-21 | 2015-10-14 | 太阳能公司 | Metal-foil-assisted fabrication of thin-silicon solar cell |
-
2012
- 2012-03-27 CN CN 201220119972 patent/CN202608172U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615881A (en) * | 2012-03-27 | 2012-08-01 | 浙江华正新材料股份有限公司 | Back plate applied to back field passivation type solar cell and method for manufacturing back plate |
| CN102615881B (en) * | 2012-03-27 | 2015-01-07 | 浙江华正新材料股份有限公司 | Back plate applied to back field passivation type solar cell and method for manufacturing back plate |
| CN104981910A (en) * | 2012-12-21 | 2015-10-14 | 太阳能公司 | Metal-foil-assisted fabrication of thin-silicon solar cell |
| CN104981910B (en) * | 2012-12-21 | 2019-01-18 | 太阳能公司 | The metal foil of thin silicon solar battery assists manufacture |
| CN104505411A (en) * | 2014-12-13 | 2015-04-08 | 乐凯胶片股份有限公司 | Coated type solar battery backboard |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
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| CX01 | Expiry of patent term |