CN214898467U - Light back-side confluence solar module - Google Patents
Light back-side confluence solar module Download PDFInfo
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- CN214898467U CN214898467U CN202121616051.9U CN202121616051U CN214898467U CN 214898467 U CN214898467 U CN 214898467U CN 202121616051 U CN202121616051 U CN 202121616051U CN 214898467 U CN214898467 U CN 214898467U
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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
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- 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 light back solar energy component that converges. The lightweight backside concentrating solar module comprises; the solar cell packaging structure comprises a substrate, a solar cell and a packaging layer which are sequentially stacked, wherein the solar cell is arranged on a first surface of the substrate, a first electrode leading-out layer and a second electrode leading-out layer which are electrically isolated from each other are further arranged on a second surface of the substrate, one of the first electrode leading-out layer and the second electrode leading-out layer is electrically connected with a positive electrode of the solar cell, the other one of the first electrode leading-out layer and the second electrode leading-out layer is electrically connected with a negative electrode of the solar cell, and the first surface and the second surface are arranged in a back-to-back mode. The embodiment of the utility model provides a pair of light back solar module that converges openly does not have and converges, and the outward appearance is more beautiful, and the subassembly back converges, and positive negative pole extraction position is more nimble, is suitable for the integration of subassembly and power consumption facility.
Description
Technical Field
The utility model relates to a solar energy component, in particular to light back solar energy component that converges belongs to photovoltaic device technical field.
Background
The conventional solar module is packaged by glass, and the weight and thickness of the module are relatively large (the thickness is 3.5-7mm, and the weight is about 20 kg/m)2) It is not suitable for the requirements of light weight and thin type of solar energy components in many integrated applications. In addition, in a conventional solar module, a cell string is subjected to bus bar on the front surface of the module through a bus bar (generally, a solder bar), and positive and negative electrode wires (or electrode points) are led out from both ends of the module. The front-side confluence affects the attractiveness of the assembly, and the useless area of the assembly is increased due to the front-side confluence, so that the efficiency of the assembly is reduced; and meanwhile, the lead wires at two ends are not beneficial to the flexibility of the components and the integration of some electric products.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a light back solar energy component that converges to overcome not enough among the prior art.
For realizing the purpose of the utility model, the utility model discloses a technical scheme include:
the embodiment of the utility model provides a light back confluence solar component, which comprises a solar cell module and a solar cell module, wherein the solar cell module comprises a solar cell module and a solar cell module; the solar cell packaging structure comprises a substrate, a solar cell and a packaging layer which are sequentially stacked, wherein the solar cell is arranged on a first surface of the substrate, a first electrode leading-out layer and a second electrode leading-out layer which are electrically isolated from each other are further arranged on a second surface of the substrate, one of the first electrode leading-out layer and the second electrode leading-out layer is electrically connected with a positive electrode of the solar cell, the other one of the first electrode leading-out layer and the second electrode leading-out layer is electrically connected with a negative electrode of the solar cell, and the first surface and the second surface are arranged in a back-to-back mode.
Compared with the prior art, the utility model has the advantages that:
1) the embodiment of the utility model provides a light back solar energy component that converges adopts the encapsulation of macromolecular material film, and thickness is little (1-2mm), and light in weight (2-4 kg/m)2)；
2) The embodiment of the utility model provides a solar cell in the light back converge solar module, the convergence of the positive and negative circuits is arranged on the back of the module, the effective working area of the module is increased;
3) the embodiment of the utility model provides a pair of light back solar module that converges openly does not have and converges, and the outward appearance is more beautiful, and the subassembly back converges, and positive negative pole extraction position is more nimble, is suitable for the integration of subassembly and power consumption facility.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic longitudinal sectional view of a lightweight back-side-junction solar module according to an exemplary embodiment of the present invention;
fig. 2 is a schematic diagram of a second side of a substrate according to an exemplary embodiment of the present invention;
fig. 3 is a schematic longitudinal cross-sectional view of another lightweight back-side-concentration solar module according to an exemplary embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second surface of a substrate according to an exemplary embodiment of the present invention.
Detailed Description
In view of the deficiencies in the prior art, the inventor of the present invention has made extensive studies and practices to provide the technical solution of the present invention. The technical solution, its implementation and principles, etc. will be further explained as follows.
The embodiment of the utility model provides a light back confluence solar component, which comprises a solar cell module and a solar cell module, wherein the solar cell module comprises a solar cell module and a solar cell module; the solar cell packaging structure comprises a substrate, a solar cell and a packaging layer which are sequentially stacked, wherein the solar cell is arranged on a first surface of the substrate, a first electrode leading-out layer and a second electrode leading-out layer which are electrically isolated from each other are further arranged on a second surface of the substrate, one of the first electrode leading-out layer and the second electrode leading-out layer is electrically connected with a positive electrode of the solar cell, the other one of the first electrode leading-out layer and the second electrode leading-out layer is electrically connected with a negative electrode of the solar cell, and the first surface and the second surface are arranged in a back-to-back mode.
In one embodiment, one of the positive electrode and the negative electrode of the solar cell is electrically connected to the first electrode lead-out layer through the first solder tape, and the other is electrically connected to the second electrode lead-out layer through the second solder tape.
In a specific embodiment, the side surface of the substrate is further provided with two or more grooves, parts of the first solder strip and the second solder strip are respectively and correspondingly arranged in the grooves, and the first solder strip and the second solder strip pass through the grooves from the first surface of the substrate and are wound on the second surface of the substrate.
In a specific embodiment, the substrate is further provided with two holes penetrating through the substrate in the thickness direction, and the first solder strip and the second solder strip penetrate through the holes from the first surface of the substrate and are electrically connected with the first electrode lead-out layer and the second electrode lead-out layer respectively.
In a specific embodiment, the first and second electrode drawing layers include a metal layer formed on the second surface of the substrate, and the metal layer has a thickness of 1 to 10 μm.
In one embodiment, the metal layer has a thickness of 2 to 5 μm.
In a specific embodiment, the substrate comprises a fiberglass board, a phenolic paper laminate, an epoxy paper laminate, a polyester glass mat laminate, or an epoxy glass cloth laminate.
In a specific embodiment, the solar cell includes a plurality of cells, and the plurality of cells are electrically connected in series and/or in parallel to form a cell string.
In one embodiment, the encapsulation layer includes a polymer material film.
In a specific embodiment, the polymer material film includes a PET film or an ETFE film, but is not limited thereto.
In a specific embodiment, an insulating back plate is further stacked on the second surface of the substrate, a first electrode lead-out window and a first electrode lead-out window are further formed in the insulating back plate, and parts of the first electrode lead-out layer and the second electrode lead-out layer are respectively exposed out of the first electrode lead-out window and the first electrode lead-out window.
In a specific embodiment, any two adjacent structural layers of the insulating back plate, the substrate, the solar cell and the packaging layer are bonded and fixedly combined through an EVA glue layer.
In one embodiment, the lightweight back-side concentrating solar module has a thickness of 1-2mm and a density of 2-4kg/m2。
In the following, the technical solution, the implementation process and the principle thereof will be further explained with reference to the drawings and the specific embodiments, and materials, dimensions, manufacturing processes and the like of the components in the embodiments of the present invention may be known to those skilled in the art unless otherwise specified.
Example 1
Referring to fig. 1 and 2, a lightweight back-side-junction solar module includes; the solar cell module comprises an insulating back sheet 500, a substrate 100, a solar cell 200 and a packaging layer 300 which are sequentially stacked, wherein the solar cell 200 is arranged on a first surface (namely the front surface and the bottom surface of the back sheet) of the substrate 100, a first electrode lead-out layer 410 and a second electrode lead-out layer 420 which are electrically isolated from each other are further arranged on a second surface (namely the back surface and the bottom surface of the substrate) of the substrate 100, the first electrode lead-out layer 410 is electrically connected with a positive electrode bonding strip (namely the first bonding strip and the bottom surface of the solar cell 200, and can be understood as a positive electrode bus strip or a bus bar and the like) 610 of the solar cell 200, the second electrode lead-out layer 420 is electrically connected with a negative electrode bonding strip (namely the second bonding strip and the bottom surface of the solar cell 200, and can be understood as a negative electrode bus strip or a bus bar and the like) 620, and a positive electrode lead-out window (namely the first electrode lead-out window and the bottom surface of the insulating back sheet 500 is further provided with a positive electrode lead-out window (501, a second electrode lead-out window and the bottom surface of the solar cell 100) and the packaging layer, A negative electrode lead-out window (i.e., the second electrode lead-out window, the same applies below) 502, and parts of the first electrode lead-out layer 410 and the second electrode lead-out layer 420 are respectively exposed from the positive electrode lead-out window 501 and the negative electrode lead-out window 502, wherein the first surface and the second surface of the substrate 100 are oppositely disposed.
It can be understood that the confluence of the positive circuit and the negative circuit of the solar cell in the module is led out from the first electrode leading-out layer and the second electrode leading-out layer and arranged on the back surface of the substrate, so that the front surface of the substrate has no confluence structure, and the effective working area of the module is increased.
Specifically, the edge region of the substrate 100 is further provided with two or more grooves 101, the grooves 101 may extend from the first surface of the substrate 100 to the second surface of the substrate through the side surface of the substrate, and part or all of the positive electrode solder strip 610 and the negative electrode solder strip 620 are correspondingly disposed in the grooves 101, that is, the positive electrode solder strip 610 and the negative electrode solder strip 620 pass through the grooves 101 from the first surface of the substrate 100 and are bent and wound on the second surface of the substrate 100.
Specifically, the substrate 100 is a glass fiber plate, the first electrode lead-out layer 410 and the second electrode lead-out layer 420 include a copper film formed on the second surface of the substrate 100 by electroless plating, electroplating, sputtering, or the like, the copper film has a thickness of 5 μm, and the copper film is divided by laser scribing into two parts electrically isolated from each other, so as to form the first electrode lead-out layer (or understood as a positive electrode lead-out region) and the second electrode lead-out layer (or understood as a negative electrode lead-out region), respectively.
Specifically, the groove 101 is disposed in the edge regions of the two sides of the substrate 100, and the width of the groove 101 is 1-2 mm.
Specifically, the solar cell 200 includes three half cells, the three half cells are interconnected to form a cell string, and a positive electrode solder strip and a negative electrode solder strip of the cell string are bent from a first surface of the substrate 100 to a second surface of the substrate and are welded to two copper films on the second surface of the substrate.
Specifically, the encapsulant layer includes a PET film or an ETFE film, an EVA adhesive layer is further disposed between any two adjacent structural layers of the insulating backplane 500, the substrate 100, the solar cell 200, and the encapsulant layer 300, and is bonded and fixed by the EVA adhesive layer, wherein the light back-side bus solar module may be manufactured and formed by a lamination process, which is not specifically limited herein.
Example 2
Referring to fig. 3 and 4, a lightweight back-side-junction solar module includes; the solar cell module comprises an insulating back sheet 500, a substrate 100, a solar cell 200 and a packaging layer 300 which are sequentially stacked, wherein the solar cell 200 is arranged on a first surface (namely the front surface and the bottom surface of the back sheet) of the substrate 100, a first electrode lead-out layer 410 and a second electrode lead-out layer 420 which are electrically isolated from each other are further arranged on a second surface (namely the back surface and the bottom surface of the substrate) of the substrate 100, the first electrode lead-out layer 410 is electrically connected with a positive electrode bonding strip (namely the first bonding strip and the bottom surface of the solar cell 200, and can be understood as a positive electrode bus strip or a bus bar and the like) 610 of the solar cell 200, the second electrode lead-out layer 420 is electrically connected with a negative electrode bonding strip (namely the second bonding strip and the bottom surface of the solar cell 200, and can be understood as a negative electrode bus strip or a bus bar and the like) 620, and a positive electrode lead-out window (namely the first electrode lead-out window and the bottom surface of the insulating back sheet 500 is further provided with a positive electrode lead-out window (501, a second electrode lead-out window and the bottom surface of the solar cell 100) and the packaging layer, A negative electrode lead-out window (i.e., the second electrode lead-out window, the same applies below) 502, and parts of the first electrode lead-out layer 410 and the second electrode lead-out layer 420 are respectively exposed from the positive electrode lead-out window 501 and the negative electrode lead-out window 502, wherein the first surface and the second surface of the substrate 100 are oppositely disposed.
It can be understood that the confluence of the positive circuit and the negative circuit of the solar cell in the module is led out from the first electrode leading-out layer and the second electrode leading-out layer and arranged on the back surface of the substrate, so that the front surface of the substrate has no confluence structure, and the effective working area of the module is increased.
Specifically, the edge regions of the first surface and the second surface of the substrate 100 are further provided with more than two grooves 101, the grooves 101 are communicated with holes 102 penetrating through the substrate 100 along the thickness direction, the positive electrode solder strip 610 and the negative electrode solder strip 620 are correspondingly arranged in the grooves 101, and the positive electrode solder strip 610 and the negative electrode solder strip 620 penetrate through the holes 102 from the first surface of the substrate 100 and are bent and wound on the second surface of the substrate 100.
Specifically, the substrate 100 is a glass fiber plate, the first electrode lead-out layer 410 and the second electrode lead-out layer 420 include a copper film formed on the second surface of the substrate 100 by electroless plating, electroplating, sputtering, or the like, the copper film has a thickness of 5 μm, and the copper film is divided by laser scribing into two parts electrically isolated from each other, so as to form the first electrode lead-out layer (or understood as a positive electrode lead-out region) and the second electrode lead-out layer (or understood as a negative electrode lead-out region), respectively.
Specifically, the groove 101 is disposed in the edge regions of the two sides of the substrate 100, and the width of the groove 101 is 1-2 mm.
Specifically, the solar cell 200 includes three half cells, the three half cells are interconnected to form a cell string, and a positive electrode solder strip and a negative electrode solder strip of the cell string are bent from a first surface of the substrate 100 to a second surface of the substrate and are welded to two copper films on the second surface of the substrate.
Specifically, the encapsulating layer includes a PET film or an ETFE film, and an EVA adhesive layer is further disposed between any two adjacent structural layers of the insulating backplane 500, the substrate 100, the solar cell 200, and the encapsulating layer 300, and is bonded and fixed by the EVA adhesive layer.
The embodiment of the utility model provides a pair of light back solar energy component that converges, this subassembly adopt the encapsulation of macromolecular material film, and thickness is little (1-2mm), light in weight (2-4 kg/m)2) The confluence of the positive circuit and the negative circuit of the solar cell in the module is arranged on the back surface of the module, so that the effective working area of the module is increased; in addition, the front surface of the assembly has no confluence, so that the appearance is more attractive; the leading-out positions of the converging positive electrode and the converging negative electrode on the back surface of the assembly are flexible, and the assembly is suitable for integrated integration of the assembly and an electric facility.
It should be understood that the above-mentioned embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, and therefore, the protection scope of the present invention should not be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (13)
1. A light back-side concentrating solar module is characterized by comprising; the solar cell packaging structure comprises a substrate, a solar cell and a packaging layer which are sequentially stacked, wherein the solar cell is arranged on a first surface of the substrate, a first electrode leading-out layer and a second electrode leading-out layer which are electrically isolated from each other are further arranged on a second surface of the substrate, one of the first electrode leading-out layer and the second electrode leading-out layer is electrically connected with a positive electrode of the solar cell, the other one of the first electrode leading-out layer and the second electrode leading-out layer is electrically connected with a negative electrode of the solar cell, and the first surface and the second surface are arranged in a back-to-back mode.
2. The lightweight backside bussed solar module of claim 1, wherein: one of the anode and the cathode of the solar cell is electrically connected with the first electrode lead-out layer through the first welding strip, and the other one of the anode and the cathode of the solar cell is electrically connected with the second electrode lead-out layer through the second welding strip.
3. The lightweight backside bussed solar module of claim 2, wherein: the side surface of the substrate is further provided with more than two grooves, parts of the first welding strip and the second welding strip are respectively and correspondingly arranged in the grooves, and the first welding strip and the second welding strip penetrate through the grooves from the first surface of the substrate and are wound on the second surface of the substrate.
4. The lightweight backside bussed solar module of claim 2, wherein: the substrate is further provided with two holes penetrating through the substrate along the thickness direction, and the first welding strip and the second welding strip penetrate through the holes from the first surface of the substrate and are respectively and electrically connected with the first electrode leading-out layer and the second electrode leading-out layer.
5. The lightweight backside bussed solar module of claim 1, wherein: the first electrode lead-out layer and the second electrode lead-out layer include a metal layer formed on the second surface of the substrate, and the thickness of the metal layer is 1-10 μm.
6. The lightweight backside bussed solar module of claim 5, wherein: the thickness of the metal layer is 2-5 μm.
7. The lightweight backside bussed solar module of claim 1 or 5, wherein: the substrate comprises a glass fiber board, a phenolic paper laminated board, an epoxy paper laminated board, a polyester glass felt laminated board or an epoxy glass cloth laminated board.
8. The lightweight backside bussed solar module of claim 1, wherein: the solar cell comprises a plurality of cells, and the cells are electrically connected in series and/or in parallel to form a cell string.
9. The lightweight backside bussed solar module of claim 1, wherein: the packaging layer comprises a high polymer material film.
10. The lightweight backside bussed solar module of claim 9, wherein: the high polymer material film comprises a PET film or an ETFE film.
11. The lightweight backside bussed solar module of claim 1, wherein: the second surface of the substrate is further overlapped with an insulating back plate, the insulating back plate is further provided with a first electrode leading-out window and a first electrode leading-out window, and parts of the first electrode leading-out layer and the second electrode leading-out layer are respectively exposed out of the first electrode leading-out window and the first electrode leading-out window.
12. The lightweight backside bussed solar module of claim 11, wherein: any two adjacent structural layers of the insulating back plate, the substrate, the solar cell and the packaging layer are bonded and fixedly combined through the EVA adhesive layer.
13. According to claim 11The light back-side confluence solar module is characterized in that: the light back-side converging solar module is 1-2mm in thickness and 2-4kg/m in density2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121616051.9U CN214898467U (en) | 2021-07-15 | 2021-07-15 | Light back-side confluence solar module |
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| CN202121616051.9U CN214898467U (en) | 2021-07-15 | 2021-07-15 | Light back-side confluence solar module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115255742A (en) * | 2022-09-26 | 2022-11-01 | 苏州小牛自动化设备有限公司 | Confluence welding strip welding machine and welding method |
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2021
- 2021-07-15 CN CN202121616051.9U patent/CN214898467U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115255742A (en) * | 2022-09-26 | 2022-11-01 | 苏州小牛自动化设备有限公司 | Confluence welding strip welding machine and welding method |
| CN115255742B (en) * | 2022-09-26 | 2023-02-14 | 苏州小牛自动化设备有限公司 | Confluence welding strip welding machine and welding method |
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