CN204991733U - Solar module that output promoted - Google Patents
Solar module that output promoted Download PDFInfo
- Publication number
- CN204991733U CN204991733U CN201520795950.8U CN201520795950U CN204991733U CN 204991733 U CN204991733 U CN 204991733U CN 201520795950 U CN201520795950 U CN 201520795950U CN 204991733 U CN204991733 U CN 204991733U
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- China
- Prior art keywords
- width
- welding
- solar
- solar wafer
- solar battery
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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
The utility model discloses a solar module that output promoted, super white low indisputable toughened glass, a EVA layer, solar wafer, the 2nd EVA layer and backplate including from the top down sets gradually wherein use between the solar wafer and weld the area connection to it be whole to go up each layer material lamination under the high temperature vacuum. Connection solar wafer's the area of welding divide into the part of three difference, wherein the first portion is as an organic whole with the line weld of solar wafer main grid, its width is not more than the main grid line width, third part and solar wafer back electrode weld as an organic wholely, and its width is greater than solar wafer back electrode width, the second portion is located between two solar wafer, and its width is between first portion and third part width. Weld and take the first portion surface to have regular spread's V type slot, increased and welded the area and to the reflection of incident light, improve the utilization ratio of solar wafer to the sunlight. The utility model discloses in reduced the optics loss and the electricity loss of subassembly encapsulation in -process through the improvement of welding the area, finally promoted the output of subassembly.
Description
Technical field
The present invention relates to solar energy materials and devices field, particularly relate to that a kind of peak power output gets a promotion solar module.
Background technology
Solar energy receives increasing concern as a kind of clean renewable new forms of energy, and its application is also more and more extensive, and the most important application of current solar energy is exactly photovoltaic generation.Photovoltaic generation utilizes photovoltaic effect directly solar energy to be converted to electric energy, the elementary cell of photovoltaic generation is solar cell, in concrete application, normally multiple solar battery sheet is formed solar module, and then each solar module is coupled together integrant electric current and export.
Now widely used solar module is substantially all by ultrawhite low iron toughened glass, two-layer EVA(ethylene-vinyl acetate copolymer), be packaged in solar cell between two-layer EVA and backboard forms.In the encapsulation process of solar module, certain package power loss can be produced, make the real output encapsulating rear assembly be less than the power sum of all cell pieces.In general, encapsulation loss is mainly divided into optical loss and electricity loss.The spectral response range of silicon solar cell is generally 300nm-1100nm, any the light of this wave band is entered factor that battery reduces all can cause optic loss, as toughened glass and EVA all can cause certain optical loss to the absorption of light and reflection, welding part to blocking etc. of light.In addition, the contact resistance between the resistance of the mismatch of solar cell electric property, welding, convergent belt and terminal box, different materials also can cause certain electricity loss.
If power loss is higher in component package process, the assembly power output produced does not reach designing requirement, must carry out downshift process to assembly; Otherwise if can reduce encapsulation loss, the increase of assembly power output also can bring the raising of income, and needed for the cell piece of arrangement of components, efficiency can reduce, and indirectly reduces production cost.Therefore, how to reduce the power loss in component package process to greatest extent, the peak power output of lifting subassembly, becomes a problem of a lot of assembly manufacturer research.
Utility model content
Object of the present invention is intended to solve the problem, by losing the optical loss in the improvement reduction component package process of assembly welding and electricity, thus the peak power output of lifting subassembly.
The solar module that in the present invention, a kind of power output promotes, comprise the low iron toughened glass of the ultrawhite set gradually from top to bottom, an EVA layer, solar battery sheet, the 2nd EVA layer and backboard, wherein use welding to connect between solar battery sheet, above layers of material is overall in high-temperature vacuum laminated.The welding of described connection solar battery sheet is divided into three different parts, and wherein Part I and solar battery sheet main gate line are welding as one, and Part II is between two pieces of solar battery sheets, and Part III and solar cell back electrode are welding as one.
Described welding Part I width is not more than solar battery sheet main gate line width, and Part III width is greater than solar cell back electrode width, and Part II width is between Part I and Part III width.
Described welding Part I surface has regularly arranged V-groove, and V-groove centerline parallel is in solar battery sheet main gate line.
The groove shape on described welding Part I surface can also be half elliptic.
Described welding Part II and Part III have smooth surface.
In superincumbent technical scheme, reduce optical loss in component package process and electricity loss by the improvement of welding.Wherein welding Part I has textured surface, this kind of surface is reuptaked utilization to the high reflectance of light by making the light overwhelming majority being irradiated to this region be reflected to solar battery sheet surface, thus reduces welding part and blocks to light the optical loss caused; The width of welding Part III increases in addition, decreases the overall electrical resistance of welding, reduces the electricity loss that welding resistance causes, finally achieves the lifting of assembly power output.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1: the solar module profile that a kind of power output promotes.
Fig. 2: welding schematic diagram.
Fig. 3: the solar module partial schematic diagram that a kind of power output promotes.
Wherein, 1 is toughened glass, and 2 is an EVA layer, and 3 is cell piece, and 4 is the 2nd EVA layer, and 5 is backboard, and 6 is welding, and 6a is welding Part I, and 6b is welding Part II, and 6c is welding Part III.
Embodiment
For technical characteristic and the content of patent of the present invention can be understood further, now the detailed technology of this patent is described below.
As shown in Figure 1, the solar module that in the present invention, a kind of power output promotes comprises the low iron toughened glass 1 of the ultrawhite set gradually from top to bottom, an EVA layer 2, solar battery sheet 3, the 2nd EVA layer 4 and backboard 5.Welding 6 is wherein used to connect between solar cell, laminating machine is put into after above-mentioned layers of material lays in order, then under high-temperature vacuum, carrying out lamination, there is melting and crosslinking curing in two-layer EVA with this understanding, by as a whole for toughened glass, cell piece and backboard bonding.
In order to reduce the power loss in component package process, the welding connecting solar battery sheet has carried out special processing, and as shown in Figure 2, welding is divided into three different parts, is respectively Part I 6a, Part II 6b and Part III 6c.The wherein front main grid wire bonding of Part I 6a and solar battery sheet, Part III 6c welds with the back electrode of solar battery sheet, and Part II 6c is between two pieces of solar battery sheets.
With conventional welding unlike, the width of this welding three parts is different.Wherein Part I 6a width is not more than solar battery sheet main gate line width, to reduce welding blocking incident light; Part III 6c width is greater than solar cell back electrode width, by increasing welding sectional area to reduce welding resistance; Part II width is between Part I and Part III width.
In order to make full use of the light inciding welding Part I, as shown in Figure 3, welding Part I surface has regularly arranged V-groove, and V-groove centerline parallel is in solar battery sheet main gate line, the light being incident to welding surface is like this reflexed to glass surface by V-groove, and then by reflection of glass surface to cell piece surface.Thus this kind of surface adds the reflection to incident sunlight, improves solar battery sheet to the utilance of sunlight.
In the present embodiment, reduce optical loss in component package process and electricity loss by the improvement of welding simultaneously.Wherein welding Part I has textured surface, by the adjustment to light reflection angle, the light overwhelming majority making to be irradiated to welding surface is reflexed to solar battery sheet surface again, is again absorbed utilization, thus reduces welding part and blocks to light the optical loss caused; The width of welding Part III strengthens the sectional area indirectly adding welding, and the overall electrical resistance of welding is reduced, thus reduces the electricity that welding resistance causes and lose.Therefore, this welding reduces optical loss and electricity loss simultaneously, finally improves the power output of assembly.
Claims (5)
1. the solar module of a power output lifting, comprise the low iron toughened glass of the ultrawhite set gradually from top to bottom, an EVA layer, solar battery sheet, the 2nd EVA layer and backboard, welding is wherein used to connect between solar battery sheet, above layers of material is overall in high-temperature vacuum laminated, it is characterized in that: welding is divided into three different parts, wherein Part I and solar battery sheet main gate line are welding as one, Part II is between two pieces of solar battery sheets, and Part III and solar cell back electrode are welding as one.
2. solar module as claimed in claim 1, it is characterized in that: welding Part I width is not more than solar battery sheet main gate line width, Part III width is greater than solar cell back electrode width, and Part II width is between Part I and Part III width.
3. solar module as claimed in claim 1, is characterized in that: welding Part I surface has regularly arranged V-groove, and V-groove centerline parallel is in solar battery sheet main gate line.
4. solar module as claimed in claim 1, is characterized in that: the groove shape on described welding Part I surface is half elliptic.
5. solar module as claimed in claim 1, is characterized in that: described welding Part II and Part III have smooth surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520795950.8U CN204991733U (en) | 2015-10-13 | 2015-10-13 | Solar module that output promoted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520795950.8U CN204991733U (en) | 2015-10-13 | 2015-10-13 | Solar module that output promoted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204991733U true CN204991733U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520795950.8U Expired - Fee Related CN204991733U (en) | 2015-10-13 | 2015-10-13 | Solar module that output promoted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204991733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449235A (en) * | 2018-12-19 | 2019-03-08 | 浙江晶科能源有限公司 | It is a kind of for welding the welding of photovoltaic module internal cell piece |
-
2015
- 2015-10-13 CN CN201520795950.8U patent/CN204991733U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449235A (en) * | 2018-12-19 | 2019-03-08 | 浙江晶科能源有限公司 | It is a kind of for welding the welding of photovoltaic module internal cell piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 226500 Rugao City, Jiangsu Province, Feng Road, No. 88, No. Patentee after: WORLDWIDE ENERGY AND MANUFACTURING USA CO.,LTD. Address before: 226500 Rugao City, Jiangsu Province, Feng Road, No. 88, No. Patentee before: Nantong Meinengde Solar Energy Electric Power Technology Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20211013 |