CN213878114U - Solar cell packaging structure - Google Patents
Solar cell packaging structure Download PDFInfo
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- CN213878114U CN213878114U CN202120208221.3U CN202120208221U CN213878114U CN 213878114 U CN213878114 U CN 213878114U CN 202120208221 U CN202120208221 U CN 202120208221U CN 213878114 U CN213878114 U CN 213878114U
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 129
- 239000004065 semiconductor Substances 0.000 claims abstract description 75
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 238000005538 encapsulation Methods 0.000 claims abstract description 34
- 239000010410 layer Substances 0.000 claims description 189
- 239000012790 adhesive layer Substances 0.000 claims description 46
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 12
- 239000005977 Ethylene Substances 0.000 claims description 12
- 229920000642 polymer Polymers 0.000 claims description 12
- 239000008393 encapsulating agent Substances 0.000 claims description 11
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 8
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 4
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 claims description 2
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 claims description 2
- 239000013585 weight reducing agent Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000005357 flat glass Substances 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 229910003437 indium oxide Inorganic materials 0.000 description 4
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 239000002313 adhesive film Substances 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
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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
Abstract
A solar cell encapsulation structure, comprising: a first flexible light-transmissive encapsulation layer; the second flexible light-transmitting packaging layer is arranged opposite to the first flexible light-transmitting packaging layer; the solar cell set is positioned between the first flexible light-transmitting packaging layer and the second flexible light-transmitting packaging layer and comprises a plurality of heterojunction solar cells connected in series, each heterojunction solar cell comprises a semiconductor substrate layer, and the overall thickness of each heterojunction solar cell is less than or equal to 100 micrometers. The solar cell packaging structure can realize flexibility and light weight.
Description
Technical Field
The utility model relates to a semiconductor field, concretely relates to solar cell packaging structure.
Background
The solar cell is a clean energy cell, and is widely applied to life and production. Currently, a plurality of solar cells are connected in series or in parallel in a solar cell module.
For the packaging structure of the solar cell module, the front plate glass and the back plate glass are mostly adopted for packaging, and the main structure is the front plate glass, the packaging adhesive film, the cell string, the packaging adhesive film and the back plate (back plate glass). The structure has no flexible characteristic, is mostly used for power generation of centralized and distributed photovoltaic systems, and has a narrow application range.
Therefore, the solar cell packaging structure in the prior art is difficult to achieve flexibility and light weight.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in overcoming among the prior art solar cell packaging structure and being difficult to realize the problem of flexibility and light-duty.
In order to solve the technical problem, the utility model provides a solar cell packaging structure, include: a first flexible light-transmissive encapsulation layer; the second flexible light-transmitting packaging layer is arranged opposite to the first flexible light-transmitting packaging layer; the solar cell set is positioned between the first flexible light-transmitting packaging layer and the second flexible light-transmitting packaging layer and comprises a plurality of heterojunction solar cells connected in series, each heterojunction solar cell comprises a semiconductor substrate layer, and the overall thickness of each heterojunction solar cell is less than or equal to 100 micrometers.
Optionally, the thickness of the semiconductor substrate layer is 75 to 85 micrometers.
Optionally, the first flexible light-transmissive encapsulation layer includes an ethylene-tetrafluoroethylene copolymer.
Optionally, the second flexible light-transmissive encapsulation layer includes an ethylene-tetrafluoroethylene copolymer.
Optionally, the thickness of the first flexible light-transmitting encapsulation layer is 80 to 100 micrometers.
Optionally, the thickness of the second flexible light-transmitting encapsulation layer is 80 to 100 micrometers.
Optionally, the method further includes: the first packaging adhesive layer is positioned between the first flexible light-transmitting packaging layer and the solar cell set; the second packaging adhesive layer is positioned between the second flexible light-transmitting packaging layer and the solar cell set; the ratio of the mass of the first packaging adhesive layer to the orthographic projection area of the first packaging adhesive layer on the first flexible light-transmitting packaging layer is less than or equal to 200g/m2(ii) a The ratio of the mass of the second packaging adhesive layer to the orthographic projection area of the second packaging adhesive layer on the second flexible light-transmitting packaging layer is less than or equal to 200g/m2。
Optionally, the thickness of the first encapsulation adhesive layer is less than or equal to 0.3 mm.
Optionally, the thickness of the second encapsulation adhesive layer is less than or equal to 0.3 mm.
Optionally, the first encapsulating adhesive layer is a high polymer of ethylene and butene, a high polymer of ethylene and octene, or polyvinyl alcohol; the second packaging adhesive layer is a high polymer of ethylene and butylene, a high polymer of ethylene and octene, or polyvinyl alcohol.
Optionally, the solar cell module further includes: interconnecting strips connecting adjacent heterojunction solar cells; the thickness of the interconnecting strips is less than or equal to 0.1 mm.
Optionally, the heterojunction solar cell comprises: a first intrinsic semiconductor layer on one side of the semiconductor substrate layer; a second intrinsic semiconductor layer on the other side of the semiconductor substrate layer; the N-type semiconductor layer is positioned on one side, back to the semiconductor substrate layer, of the first intrinsic semiconductor layer; the P-type semiconductor layer is positioned on one side, back to the semiconductor substrate layer, of the second intrinsic semiconductor layer; the first light-transmitting conducting layer is positioned on one side, back to the semiconductor substrate layer, of the N-type semiconductor layer; the second light-transmitting conducting layer is positioned on one side, back to the semiconductor substrate layer, of the P-type semiconductor layer; the first grid line electrode is positioned on one side, back to the semiconductor substrate layer, of the first light-transmitting conducting layer; the second grid line electrode is positioned on one side, back to the semiconductor substrate layer, of the second light-transmitting conducting layer; for two adjacent heterojunction solar cells, a first light-transmitting conducting layer of one heterojunction solar cell is a light incident side, and a second light-transmitting conducting layer of the other heterojunction solar cell is a light incident side; one end of the interconnection bar is connected with a first grid line electrode of one heterojunction solar cell, and the other end of the interconnection bar is connected with a second grid line electrode of the other heterojunction solar cell.
The utility model discloses technical method has following beneficial effect:
1. the utility model discloses technical scheme provides a solar cell packaging structure, include: a first flexible light-transmissive encapsulation layer; the second flexible light-transmitting packaging layer is arranged opposite to the first flexible light-transmitting packaging layer; and the solar battery pack is positioned between the first flexible light-transmitting packaging layer and the second flexible light-transmitting packaging layer. The first flexible light-transmitting packaging layer and the second flexible light-transmitting packaging layer have the light-transmitting characteristic, and the sunlight can be well incident to the solar battery pack. The first flexible light-transmitting packaging layer and the second flexible light-transmitting packaging layer both have the characteristic of flexibility, so that the solar cell packaging structure is facilitated to realize flexibility and light weight. The solar cell set comprises a plurality of heterojunction solar cells connected in series, each heterojunction solar cell comprises a semiconductor substrate layer, the thickness of the semiconductor substrate layer is 75-85 micrometers, and the overall thickness of the heterojunction solar cell is less than or equal to 100 micrometers. The thickness of the semiconductor substrate layer in each heterojunction solar cell is smaller, so that the thickness of the heterojunction solar cell is reduced, and correspondingly, the thickness of the solar cell group is reduced, so that the solar cell packaging structure plays a key role in reducing weight, and the flexibility of the solar cell packaging structure is facilitated.
2. Further, the first flexible light-transmissive encapsulation layer includes an ethylene-tetrafluoroethylene copolymer. The first flexible light-transmitting packaging layer is good in light transmittance, high in water resistance and resistant to ultraviolet irradiation. The first flexible light-transmitting packaging layer plays a key role in weight reduction and flexibility of the solar cell packaging structure.
3. Further, the second flexible light-transmissive encapsulation layer includes an ethylene-tetrafluoroethylene copolymer. The second flexible light-transmitting packaging layer is good in light transmittance, high in water resistance and resistant to ultraviolet irradiation. The second flexible light-transmitting packaging layer plays a key role in weight reduction and flexibility of the solar cell packaging structure.
4. Further, the thickness of the first flexible light-transmitting encapsulation layer is 80-100 micrometers; the thickness of the second flexible light-transmitting packaging layer is 80-100 micrometers. The thickness of the first flexible light-transmitting packaging layer is lower, and the thickness of the second flexible light-transmitting packaging layer is lower, so that the solar cell packaging structure plays a key role in reducing weight.
6. Further, the ratio of the mass of the first packaging adhesive layer to the orthographic projection area of the first packaging adhesive layer on the first flexible light-transmitting packaging layer is less than or equal to 200g/m2(ii) a The ratio of the mass of the second packaging adhesive layer to the orthographic projection area of the second packaging adhesive layer on the second flexible light-transmitting packaging layer is less than or equal to 200g/m2. Therefore, the thickness of the first packaging adhesive layer is reduced, and the thickness of the second packaging adhesive layer is reduced. The first packaging adhesive layer plays a key role in weight reduction of the solar cell packaging structure and helps the flexibility characteristic of the solar cell packaging structure, and the second packaging adhesive layer plays a key role in weight reduction of the solar cell packaging structure and helps the flexibility characteristic of the solar cell packaging structure.
7. Further, the thickness of the first packaging adhesive layer is smaller than or equal to 0.3mm, and the thickness of the second packaging adhesive layer is smaller than or equal to 0.3 mm. The thickness of the first packaging adhesive layer is lower, the thickness of the second packaging adhesive layer is lower, a key effect on weight reduction of the solar cell packaging structure is achieved, and the flexibility characteristic of the solar cell packaging structure is facilitated.
Secondly, the thickness of the solar battery pack is reduced, and a foundation is provided for the small thickness of the first packaging adhesive layer and the second packaging adhesive layer.
8. Further, the solar cell module further includes: interconnecting strips connecting adjacent heterojunction solar cells; the thickness of the interconnecting strips is less than or equal to 0.1 mm. The thickness of the interconnection strip is smaller, so that the thickness of the solar battery pack is reduced, a key effect on weight reduction of the solar battery packaging structure is achieved, and the flexibility characteristic of the solar battery packaging structure is facilitated. Secondly, the thickness of the interconnection strips is reduced, and a foundation is provided for the small thickness of the first packaging adhesive layer and the second packaging adhesive layer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts;
fig. 1 is a schematic structural diagram of a solar cell package structure according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a plurality of heterojunction solar cells connected in series according to an embodiment of the present invention;
reference numerals:
10. a solar cell array; 12a, a first flexible light-transmitting packaging layer; 12b, a second flexible light-transmitting packaging layer; 11a, a first packaging adhesive layer; 11b, a second packaging adhesive layer;
101. a semiconductor substrate layer; 102. an N-type semiconductor layer; 103. a P-type semiconductor layer; 104. a first light-transmitting conductive layer; 105. a second light-transmitting conductive layer; 106. an interconnection strip.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
An embodiment of the present invention provides a solar cell package structure, please refer to fig. 1 and fig. 2 in combination, including: a first flexible light-transmissive encapsulation layer 12 a; a second flexible light-transmitting encapsulation layer 12b arranged opposite to the first flexible light-transmitting encapsulation layer 12 a; the solar cell set 10 is positioned between the first flexible light-transmitting packaging layer 12a and the second flexible light-transmitting packaging layer 12 b; the solar cell group 10 comprises a plurality of heterojunction solar cells connected in series, each heterojunction solar cell comprises a semiconductor substrate layer 101, the thickness of the semiconductor substrate layer 101 is 75-85 micrometers, and the thickness of each heterojunction solar cell is less than or equal to 100 micrometers.
The first flexible light-transmitting packaging layer 12a and the second flexible light-transmitting packaging layer 12b both have the light-transmitting characteristic, and the sunlight can be guaranteed to be well incident to the solar battery pack. The first flexible light-transmitting packaging layer 12a and the second flexible light-transmitting packaging layer 12b both have the characteristic of flexibility, so that the solar cell packaging structure is facilitated to realize flexibility and light weight. The solar cell set comprises a plurality of heterojunction solar cells connected in series, each heterojunction solar cell comprises a semiconductor substrate layer, the thickness of the semiconductor substrate layer is 75-85 micrometers, and the thickness of each heterojunction solar cell is less than or equal to 100 micrometers. The thickness of the semiconductor substrate layer in each heterojunction solar cell is smaller, so that the thickness of the heterojunction solar cell is reduced, and correspondingly, the thickness of the solar cell group is reduced, so that the solar cell packaging structure plays a key role in reducing weight, and the flexibility of the solar cell packaging structure is facilitated.
Further, the thickness of the first flexible light-transmitting encapsulation layer 12a is 80 to 100 micrometers; the thickness of the second flexible light-transmitting encapsulation layer 12b is 80 to 100 micrometers. The thickness of the first flexible light-transmitting packaging layer 12a is lower, and the thickness of the second flexible light-transmitting packaging layer 12b is lower, so that the weight reduction of the solar cell packaging structure is realized.
Further, the first flexible light-transmitting encapsulation layer 12a includes an ethylene-tetrafluoroethylene copolymer. The first flexible light-transmitting packaging layer 12a has good light transmittance, high water resistance and ultraviolet irradiation resistance. The first flexible light-transmitting encapsulation layer 12a plays a key role in weight reduction and flexibility of the solar cell encapsulation structure.
Further, the second flexible light-transmitting encapsulating layer 12b includes an ethylene-tetrafluoroethylene copolymer. The second flexible light-transmitting packaging layer 12b has good light transmittance, high water resistance and ultraviolet irradiation resistance. The second flexible light-transmitting encapsulation layer 12b plays a key role in weight reduction and flexibility of the solar cell encapsulation structure.
The solar cell encapsulation structure further comprises: a first encapsulating adhesive layer 11a located between the first flexible light-transmitting encapsulating layer 12a and the solar cell set 10; and a second packaging adhesive layer 11b positioned between the second flexible light-transmitting packaging layer 12b and the solar cell set 10.
In this embodiment, the ratio of the mass of the first encapsulant layer 11a to the orthographic projection area of the first encapsulant layer 11a on the first flexible light-transmitting encapsulant layer 12a is less than or equal to 200g/m2E.g. 180g/m2、160g/m2、140g/m2Or 120g/m2. The ratio of the mass of the second packaging adhesive layer 11b to the orthographic projection area of the second packaging adhesive layer 11b on the second flexible light-transmitting packaging layer 12b is less than or equal to 200g/m2E.g. 180g/m2、160g/m2、140g/m2Or 120g/m2. This results in a reduced grammage of the first encapsulating glue layer 11a and a reduced grammage of the second encapsulating glue layer 11 b. This results in a reduced thickness of the first encapsulating glue layer 11a and a reduced thickness of the second encapsulating glue layer 11 b. The first packaging adhesive layer 11a plays a key role in reducing weight of the solar cell packaging structure and helping the flexibility characteristic of the solar cell packaging structure, and the second packaging adhesive layer 11b plays a key role in reducing weight of the solar cell packaging structure and helping the flexibility characteristic of the solar cell packaging structure.
The thickness of the first encapsulating adhesive layer 11a is less than or equal to 0.3mm, such as 0.25mm or 0.2 mm. The thickness of the second encapsulant layer 11b is less than or equal to 0.3mm, such as 0.25mm or 0.2 mm. The thickness of the first packaging adhesive layer 11a is lower, and the thickness of the second packaging adhesive layer 11b is lower, so that the solar cell packaging structure plays a key role in reducing weight, and the flexibility of the solar cell packaging structure is facilitated.
The first packaging adhesive layer 11a is a high polymer of ethylene and butylene, a high polymer of ethylene and octene, or polyvinyl alcohol; the second encapsulating adhesive layer 11b is a high polymer of ethylene and butylene, a high polymer of ethylene and octene, or polyvinyl alcohol.
The solar cell set 10, referring to fig. 2, further includes: interconnect strips 106 connecting adjacent heterojunction solar cells; the interconnecting strips 106 have a thickness of less than or equal to 0.1 mm. Since the thickness of the interconnection strips 106 is small, the thickness of the solar cell module is reduced, which plays a key role in reducing the weight of the solar cell package structure and contributes to the flexibility of the solar cell package structure. Secondly, the reduced thickness of the interconnection strips 106 also provides a basis for the smaller thickness of the first and second encapsulant layers 11a, 11 b.
The heterojunction solar cell includes: a semiconductor substrate layer 101; a first intrinsic semiconductor layer (not shown) on the semiconductor substrate layer 101 side; a second intrinsic semiconductor layer (not shown) on the other side of the semiconductor substrate layer 101; the N-type semiconductor layer 102 is positioned on one side, facing away from the semiconductor substrate layer 101, of the first intrinsic semiconductor layer; the P-type semiconductor layer 103 is positioned on one side, facing away from the semiconductor substrate layer 101, of the second intrinsic semiconductor layer; a first light-transmitting conductive layer 104 positioned on one side of the N-type semiconductor layer 102, which faces away from the semiconductor substrate layer 101; the second light-transmitting conductive layer 105 is positioned on one side, opposite to the semiconductor substrate layer 101, of the P-type semiconductor layer 103; a first gate line electrode (not shown) located on a side of the first light-transmitting conductive layer 104 facing away from the semiconductor substrate layer 101; and a second gate line electrode (not shown) located on a side of the second light-transmitting conductive layer 105 facing away from the semiconductor substrate layer 101.
For two adjacent heterojunction solar cells, the first light-transmitting conductive layer 104 of one heterojunction solar cell is the light incident side, and the second light-transmitting conductive layer 105 of the other heterojunction solar cell is the light incident side.
One end of the interconnection bar 106 is connected to a first grid line electrode of one heterojunction solar cell, and the other end of the interconnection bar 106 is connected to a second grid line electrode of another heterojunction solar cell.
The material of the semiconductor substrate layer 101 comprises monocrystalline silicon.
The material of the first intrinsic semiconductor layer includes amorphous silicon. The material of the second intrinsic semiconductor layer includes amorphous silicon.
The material of the first light-transmitting conductive layer 104 includes indium oxide such as tin-doped indium oxide, and the material of the second light-transmitting conductive layer 105 includes indium oxide such as tin-doped indium oxide.
The material of the first grid line electrode comprises silver, and the material of the second grid line electrode comprises silver.
The solar cell packaging structure of this embodiment, through packaging material's improvement and the control of battery cluster thickness, broken through the unable defect of realizing physically by a wide margin crooked of current conventional subassembly, the quality is light moreover, reduces the requirement to the installing support, and application scope is also wider.
It should be noted that, for the existing package structure of the heterojunction solar cell, the adopted semiconductor substrate layer is relatively thick, about 140 micrometers, and correspondingly, the solar cell string is also thick, mainly to avoid the solar cell from being broken in the process of laminating the package layer and the solar cell string, and when the semiconductor substrate layer is thick, the solar cell string itself cannot be flexibly bent.
And in this embodiment, creative attenuate the thickness of semiconductor substrate layer, also adopt thinner semiconductor substrate layer exactly, when the semiconductor substrate layer is thinner, the flexible performance of buckling of semiconductor substrate layer is better, is difficult to the breakage under less deformation, and is corresponding, the utility model discloses a heterojunction solar cell's thickness is also less, and the thickness of whole solar cell group is less, and the flexible performance of buckling of solar cell group is better. On this basis, when the in-process of laminating first flexible printing opacity encapsulated layer 12a and second flexible printing opacity encapsulated layer 12b, set up first frock layer in first flexible printing opacity encapsulated layer 12a dorsad one side of solar cell group, set up second frock layer in second flexible printing opacity encapsulated layer 12b dorsad one side of solar cell group sets up the laminating of rete between first frock layer and the second frock layer, later laminates, gets rid of first frock layer and second frock layer after the lamination, avoids the damage of lamination process to solar cell group.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A solar cell encapsulation structure, comprising:
a first flexible light-transmissive encapsulation layer;
the second flexible light-transmitting packaging layer is arranged opposite to the first flexible light-transmitting packaging layer;
the solar cell set is positioned between the first flexible light-transmitting packaging layer and the second flexible light-transmitting packaging layer and comprises a plurality of heterojunction solar cells connected in series, each heterojunction solar cell comprises a semiconductor substrate layer, and the overall thickness of each heterojunction solar cell is less than or equal to 100 micrometers.
2. The solar cell encapsulation structure according to claim 1, wherein the first flexible light transmissive encapsulant layer comprises ethylene-tetrafluoroethylene copolymer and the second flexible light transmissive encapsulant layer comprises ethylene-tetrafluoroethylene copolymer.
3. The solar cell encapsulation structure of claim 1, wherein the semiconductor substrate layer has a thickness of 75 to 85 microns.
4. The solar cell encapsulation structure according to claim 1, wherein the first flexible light transmissive encapsulant layer has a thickness of 80 to 100 microns; the thickness of the second flexible light-transmitting packaging layer is 80-100 micrometers.
5. The solar cell encapsulation structure according to claim 1, further comprising: the first packaging adhesive layer is positioned between the first flexible light-transmitting packaging layer and the solar cell set; the second packaging adhesive layer is positioned between the second flexible light-transmitting packaging layer and the solar cell set;
the ratio of the mass of the first packaging adhesive layer to the orthographic projection area of the first packaging adhesive layer on the first flexible light-transmitting packaging layer is less than or equal to 200g/m2；
The ratio of the mass of the second packaging adhesive layer to the orthographic projection area of the second packaging adhesive layer on the second flexible light-transmitting packaging layer is less than or equal to 200g/m2。
6. The solar cell encapsulation structure according to claim 5, wherein the thickness of the first encapsulant layer is less than or equal to 0.3 mm.
7. The solar cell encapsulation structure according to claim 5, wherein the thickness of the second encapsulant layer is less than or equal to 0.3 mm.
8. The solar cell encapsulation structure according to claim 5, wherein the first encapsulant layer is a high polymer of ethylene and butene, a high polymer of ethylene and octene, or polyvinyl alcohol; the second packaging adhesive layer is a high polymer of ethylene and butylene, a high polymer of ethylene and octene, or polyvinyl alcohol.
9. The solar cell encapsulation structure according to any one of claims 1 to 8, wherein the solar cell group further comprises: interconnecting strips connecting adjacent heterojunction solar cells; the thickness of the interconnecting strips is less than or equal to 0.1 mm.
10. The solar cell package structure of claim 9, wherein the heterojunction solar cell comprises:
a first intrinsic semiconductor layer on one side of the semiconductor substrate layer; a second intrinsic semiconductor layer on the other side of the semiconductor substrate layer;
the N-type semiconductor layer is positioned on one side, back to the semiconductor substrate layer, of the first intrinsic semiconductor layer;
the P-type semiconductor layer is positioned on one side, back to the semiconductor substrate layer, of the second intrinsic semiconductor layer;
the first light-transmitting conducting layer is positioned on one side, back to the semiconductor substrate layer, of the N-type semiconductor layer;
the second light-transmitting conducting layer is positioned on one side, back to the semiconductor substrate layer, of the P-type semiconductor layer;
the first grid line electrode is positioned on one side, back to the semiconductor substrate layer, of the first light-transmitting conducting layer;
the second grid line electrode is positioned on one side, back to the semiconductor substrate layer, of the second light-transmitting conducting layer;
for two adjacent heterojunction solar cells, a first light-transmitting conducting layer of one heterojunction solar cell is a light incident side, and a second light-transmitting conducting layer of the other heterojunction solar cell is a light incident side;
one end of the interconnection bar is connected with a first grid line electrode of one heterojunction solar cell, and the other end of the interconnection bar is connected with a second grid line electrode of the other heterojunction solar cell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120208221.3U CN213878114U (en) | 2021-01-22 | 2021-01-22 | Solar cell packaging structure |
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| CN202120208221.3U CN213878114U (en) | 2021-01-22 | 2021-01-22 | Solar cell packaging structure |
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| CN213878114U true CN213878114U (en) | 2021-08-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116102987A (en) * | 2023-04-13 | 2023-05-12 | 合肥华晟光伏科技有限公司 | Solar cell module packaging adhesive film, preparation method thereof and solar cell module |
| CN116525700B (en) * | 2023-04-23 | 2024-03-26 | 苏州融硅新能源科技有限公司 | Flexible photovoltaic module and photovoltaic awning |
-
2021
- 2021-01-22 CN CN202120208221.3U patent/CN213878114U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116102987A (en) * | 2023-04-13 | 2023-05-12 | 合肥华晟光伏科技有限公司 | Solar cell module packaging adhesive film, preparation method thereof and solar cell module |
| CN116525700B (en) * | 2023-04-23 | 2024-03-26 | 苏州融硅新能源科技有限公司 | Flexible photovoltaic module and photovoltaic awning |
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