CN104300021A - Back contact type solar cell module - Google Patents
Back contact type solar cell module Download PDFInfo
- Publication number
- CN104300021A CN104300021A CN201410486420.5A CN201410486420A CN104300021A CN 104300021 A CN104300021 A CN 104300021A CN 201410486420 A CN201410486420 A CN 201410486420A CN 104300021 A CN104300021 A CN 104300021A
- Authority
- CN
- China
- Prior art keywords
- back contact
- layer
- contact type
- type solar
- cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000005341 toughened glass Substances 0.000 claims abstract description 7
- 238000002955 isolation Methods 0.000 claims abstract description 4
- 241000446313 Lamella Species 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 21
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 9
- 238000010422 painting Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000002210 silicon-based material Substances 0.000 claims description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract 2
- 229910052802 copper Inorganic materials 0.000 abstract 2
- 239000010949 copper Substances 0.000 abstract 2
- 238000010248 power generation Methods 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0516—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module specially adapted for interconnection of back-contact solar cells
-
- 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 invention belongs to the field of solar power generation equipment, and relates to a back contact type solar cell module. The back contact type solar cell module is used for solving the problem that because an existing back contact type solar crystalline silicon cell module is too high in series connection and packaging cost, the existing back contact type solar crystalline silicon cell module cannot be easily marketed. The back contact type solar crystalline silicon cell module comprises cell layers, a tempered glass layer and a module backboard layer, wherein a packaging layer is arranged between the cell layers and the tempered glass layer, a packaging layer is arranged between the cell layers and the module backboard layer, a plurality of rows of positive electrode points and a plurality of rows of negative electrode points are arranged on each cell layer, and electrical isolation layers are arranged between the positive electrode points and the corresponding cell layer or between the negative electrode points and the corresponding cell layer. The solar cell module further comprises tin-coated copper strips, wherein the tin-coated copper strips are used for connecting positive electrode points, on the same straight line, of every two adjacent cell layers in series and negative electrode points, on the same straight line, of every two adjacent cell layers in series. The problem can be effectively solved by the adoption of the back contact type solar cell module.
Description
Technical field
The invention belongs to solar power plant field, relate to a kind of back contact solar battery assembly.
Background technology
Current new energy development be applied in, the one that photovoltaic solar receives publicity beyond doubt most, the feature of high, the pollution-free and never exhaustion of its conversion efficiency, is considered to the alternative energy in future, causes general concern and attention in countries in the world.The Photovoltaic new energy product mainly crystal silicon cell assembly of current large-scale application, the positive and negative electrode (silver-colored main gate line) of conventional batteries is distributed in the front and back of cell piece, and the interconnected of adjacent cell sheet is welded by welding to realize.But the electrode that this battery is positioned at cell piece front can cause sensitive surface and block, and reduces light-receiving area, affects the photoelectric conversion efficiency of solar cell.
For solving the problem of solar battery sheet front electrode shading, there has been proposed back-contact solar cell, this battery is by special design, positive and negative electrode is all placed on the back surface of cell piece, but how back contact battery is connected and be packaged into assembly is a difficult problem, it is interconnected that Holland national energy research center (ECN) proposes to realize between cell piece with the Copper Foil (conducting wire backboard) etching conductive channel, but this conducting wire backboard process is complicated, expensive and market there is no ripe product supply.
Summary of the invention
Technical problem to be solved by this invention is that existing back contact solar crystal silicon cell assembly series connection packaging cost is too high, be unfavorable for the marketization of back contact solar crystal silicon cell assembly, and provide a kind of back contact solar crystal silicon cell assembly for this problem.
A kind of back contact solar battery assembly of the present invention, comprise battery lamella, toughened glass layer and assembly backsheet layer, battery lamella and toughened glass layer, encapsulated layer is equipped with between battery lamella and assembly backsheet layer, described battery lamella is provided with some row's positive electricity limits and negative electricity limit, positive electricity limit or be provided with electric isolation layer between negative electricity limit and battery lamella, it is characterized in that described solar module also comprises will to be distributed in respectively on adjacent two pieces of battery lamellas and the painting tin copper strips that is connected in series of the positive electricity limit be on same straight line and negative electricity limit.
Adjacent two pieces of battery lamellas first can be rotated 180 ° by technical staff each other, and now, the negative electrode point range that the positive electrode point range on one piece of battery lamella is just in time adjacent on battery lamella is on same straight line.Described positive electrode point range being connected with being coated with tin copper strips with negative electrode point range, just can completing being connected in series of back contact solar battery, technique is simple, and cost significantly reduces.
In order to further reduce cost, described painting tin copper strips is connected with positive and negative electrode point by adhesive dots.And before making the present invention, positive and negative electrode point first glues note with conductive tape usually, and then being coated with, tin copper strips is sticky to be posted on conductive tape, wastes most conductive tape.
Further, the conducting particles in adhesive dots is 1-50um Argent grain;
Further, the matrix of adhesive dots is epoxy resin or silicone based material;
Further, the thickness of adhesive dots is 50-1000um;
Adhesive dots can select any shape, but ordinary priority choice for use square column type or cylindrical.
Accompanying drawing explanation
Fig. 1 is the structural representation of battery lamella in a kind of back contact solar battery assembly described in embodiment;
Fig. 2 is that Fig. 1 removes the partial structurtes schematic diagram being coated with tin copper strips and adhesive dots.
Embodiment
Embodiment
A kind of back contact solar battery assembly, backsheet layer is followed successively by front by the back side, encapsulated layer, p-type crystalline silicon back-contact battery lamella, encapsulated layer, toughened glass layer is through lamination, frame up and the conventional steps such as terminal box are installed and be made, see Fig. 1, described battery lamella 1 is provided with the square silver-colored positive electricity limit 2 of 2mm × 2mm, silver negative electricity limit 4, electric isolation layer 3 is provided with between positive electricity limit 2 and battery lamella, adjacent cell lamella being rotated 180 ° just can make the positive electricity limit on battery lamella be adjacent on negative electricity limit place on battery lamella and same straight line, be coated with tin copper strips 6 for being in the connection of collinear positive electricity limit and negative electricity limit, be coated with tin copper strips 6 and mutually glue note with positive electricity limit and negative electricity limit by the two-sided adhesive dots 5 of 3mm × 3mm cube, conducting particles in adhesive dots 5 is 1-50um Argent grain, thickness is 100um.
Claims (5)
1. a back contact solar battery assembly, comprise battery lamella, toughened glass layer and assembly backsheet layer, battery lamella and be equipped with encapsulated layer between toughened glass layer, battery lamella and assembly backsheet layer, described battery lamella is provided with some row's positive electricity limits and negative electricity limit, positive electricity limit or be provided with electric isolation layer between negative electricity limit and battery lamella, is characterized in that described solar module also comprises and will to be distributed in respectively on adjacent two pieces of battery lamellas and the painting tin copper strips that is connected in series of the positive electricity limit be on same straight line and negative electricity limit.
2. a kind of back contact solar battery assembly according to claim 1, is characterized in that described painting tin copper strips is connected with positive and negative electrode point by adhesive dots.
3. a kind of back contact solar battery assembly according to claim 2, is characterized in that the conducting particles in adhesive dots is 1-50um.
4. a kind of back contact solar battery assembly according to claim 2, is characterized in that the matrix of adhesive dots is epoxy resin or silicone based material.
5. a kind of back contact solar battery assembly according to claim 2, is characterized in that the thickness of adhesive dots is 50-1000um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410486420.5A CN104300021A (en) | 2014-09-23 | 2014-09-23 | Back contact type solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410486420.5A CN104300021A (en) | 2014-09-23 | 2014-09-23 | Back contact type solar cell module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104300021A true CN104300021A (en) | 2015-01-21 |
Family
ID=52319680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410486420.5A Pending CN104300021A (en) | 2014-09-23 | 2014-09-23 | Back contact type solar cell module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104300021A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598199A (en) * | 2018-05-09 | 2018-09-28 | 南京日托光伏科技股份有限公司 | A kind of back-contact fragment solar module and preparation method |
| CN110783415A (en) * | 2019-11-07 | 2020-02-11 | 江苏辉伦太阳能科技有限公司 | Novel solar cell module and preparation method thereof |
-
2014
- 2014-09-23 CN CN201410486420.5A patent/CN104300021A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598199A (en) * | 2018-05-09 | 2018-09-28 | 南京日托光伏科技股份有限公司 | A kind of back-contact fragment solar module and preparation method |
| CN110783415A (en) * | 2019-11-07 | 2020-02-11 | 江苏辉伦太阳能科技有限公司 | Novel solar cell module and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150121 |
|
| WD01 | Invention patent application deemed withdrawn after publication |