CN105742381A - Main-grid-line-free solar cell piece and solar cell - Google Patents
Main-grid-line-free solar cell piece and solar cell Download PDFInfo
- Publication number
- CN105742381A CN105742381A CN201610268397.1A CN201610268397A CN105742381A CN 105742381 A CN105742381 A CN 105742381A CN 201610268397 A CN201610268397 A CN 201610268397A CN 105742381 A CN105742381 A CN 105742381A
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- China
- Prior art keywords
- grid
- solar battery
- battery sheet
- wire
- solar cell
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- 239000004065 semiconductor Substances 0.000 claims abstract description 13
- 230000005684 electric field Effects 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052709 silver Inorganic materials 0.000 abstract description 10
- 239000004332 silver Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002411 adverse Effects 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Sustainable Energy (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a main-grid-line-free solar cell piece and a solar cell. By adoption of the main-grid-line-free solar cell piece and the solar cell, the silver paste consumption is lowered, the collection efficiency of photo-generated current is improved, and adverse effects caused by subfissure, damage and grid line breaking of the cell piece are avoided. The main-grid-line-free solar cell piece comprises a semiconductor piece, a front surface electrode formed on the front surface of the semiconductor piece, and a back surface electrode formed on the back surface of the semiconductor piece; the front surface electrode comprises multiple secondary grid lines; the multiple grid lines are arranged in parallel to each other; the solar cell piece also comprises first wires electrically with the secondary grid lines respectively; and the first wires are crossed with the secondary grid lines and are contacted and conducted in the crossing position.
Description
Technical field
The present invention relates to photovoltaic field, particularly to a kind of solar battery sheet without main grid and solaode.
Background technology
The effect of the electrode of crystal silicon solar energy battery is to collect photogenerated current, and front-side current is collected by front electrode, and back side electric current is collected by backplate.As shown in Figure 1, as shown in Figure 2, the solaode that multiple solar battery sheet series weldings are formed is as shown in Figure 3 for backplate for the front electrode of solar battery sheet of the prior art.Front electrode generally comprises main gate line (hereinafter referred to as main grid) 1 ' and secondary grid line (hereinafter referred to as secondary grid) 2 ', and backplate includes back electrode 3 ' and back surface field 4 '.Front-side current conducts after being collected by secondary grid 2 ' to main grid 1 ', and back side electric current is conducted to back electrode 3 ' by after carrying on the back electric field 4 ' collection.
Silver slurry is noble metal, as one of the electrode material of solar battery sheet, account for a big chunk proportion of its cost.With regard to front gate line, main grid 1 ' accounts for the 35 ~ 40% of whole grid line area, but owing to the highly more secondary grid of main grid 1 ' are high, actual consumption silver amount to account for about the 50% of front gate line, and secondary grid 2 ' consumption silver amount accounts for other the 50% of front gate line.
When collecting photogenerated current, every secondary grid 2 ' must first conduct electrical currents to main grid 1 ', then is conducted by the welding 5 ' being connected with main grid 1 ', transmits path length；And pair grid 2 ' are once rupture, or there is hidden splitting or damaged in cell piece, it will causes power loss, reduces solar cell generating effect.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of solar battery sheet without main grid and solaode, which reduce silver slurry consumption, improve photogenerated current collection efficiency, it is to avoid the adverse effect that cell piece is hidden to be split, damaged, disconnected grid cause.
For solving above-mentioned technical problem, a kind of technical scheme that the present invention adopts is:
A kind of solar battery sheet without main grid, including semiconductor chip, the front electrode being formed on described semiconductor chip front, the backplate that is formed in described backside semiconductor, described front electrode is made up of multiple secondary grid, multiple described secondary grid are parallel to each other, and this can also include the first wire of being electrically connected mutually with each described secondary grid by cell piece very much.
Preferably, described first wire intersects with each described secondary grid and contacts at infall conducting.
Preferably, described first wire is multiple, and multiple described first conductor spacings are arranged, and each first wire is electrically connected mutually with each described secondary grid respectively.
It is highly preferred that described first wire is mutually perpendicular to described secondary grid.
Further, multiple described wires are arranged at equal intervals, and multiple described secondary grid are arranged at equal intervals.
Preferably, described backplate is constituted by carrying on the back electric field, and this solar battery sheet also includes the second wire being electrically connected mutually with described back of the body electric field.
The another technical scheme that the present invention adopts is:
A kind of solaode, including multiple above-mentioned solar battery sheets, the first wire of each described solar battery sheet is corresponding in turn to concatenation.
Preferably, described backplate is constituted by carrying on the back electric field, and this solar battery sheet also includes the second wire being electrically connected mutually with described back of the body electric field, and the second wire of each described solar battery sheet is corresponding in turn to concatenation.
The present invention adopts technique scheme, have the advantage that front electrode eliminates main grid compared to existing technology, with each secondary grid of the first wire cell piece and connect different cell pieces, during series welding, every thin grid line all turns on the first conductive contact, electric current carrying pathway is greatly shortened, reduce the loss of grid line resistance, can also avoid because of disconnected grid simultaneously, hidden split, the impact that the problems such as breakage are brought, additionally can save the silver slurry loss needed for former main grid, simultaneously because transmission path shortens, thin grid line height can be made shorter (allowing less sectional area), what so reduce further silver slurry makes consumption.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of the front electrode of solar battery sheet of the prior art；
Accompanying drawing 2 is the schematic diagram of the backplate of solar battery sheet of the prior art；
Accompanying drawing 3 is the cell piece series welding schematic diagram of solaode of the prior art；
Accompanying drawing 4 is the schematic diagram of the secondary grid of the solar battery sheet without main grid of the present invention；
Accompanying drawing 5 is the schematic diagram of the back of the body electric field of the solar battery sheet without main grid of the present invention；
Accompanying drawing 6 is the cell piece concatenation schematic diagram of the solaode of the present invention.
In above-mentioned accompanying drawing:
1 ', main grid；2 ', secondary grid；3 ', back electrode；4 ', back of the body electric field；5 ', welding;
1, secondary grid；2, the first wire；3, back of the body electric field；4, the second wire.
Detailed description of the invention
Advantages and features of the invention below in conjunction with accompanying drawing, presently preferred embodiments of the present invention are described in detail, so that can be easier to be understood by those skilled in the art.
A kind of solar battery sheet without main grid, including semiconductor chip, the front electrode being formed on semiconductor chip front, the backplate being formed in backside semiconductor.
With reference to shown in accompanying drawing 4 and 6, front electrode is made up of multiple secondary grid 1, i.e. front electrode only includes secondary grid 1 and do not comprise main grid.This solar battery sheet also includes mutually being electrically connected with each secondary grid 1 with the first wire 2 derived by the electric current that each secondary grid 1 are collected.Specific in the present embodiment, front electrode is made up of 20 ~ 100 secondary grid 1 being parallel to each other and being spacedly distributed on semiconductor chip front.First wire 2 is mutually perpendicular to secondary grid 1, and the first wire 2 is 20 ~ 100 and arranges at equal intervals.Each first wire 2 intersects with above-mentioned each secondary grid 1 respectively and adopts the conducting realization that electrically contacts to be electrically connected at infall, thus constituting the structure of grating type.
With reference to shown in accompanying drawing 5, backplate is constituted by carrying on the back electric field 3, and namely backplate only includes back of the body electric field 3 and do not comprise back electrode.The second wire 4 that this solar battery sheet also includes being electrically connected with back of the body electric field 3 phase is to derive the electric current that back of the body electric field 3 is collected.
With reference to shown in accompanying drawing 6, a kind of solaode without main grid, it includes multiple solar battery sheet without main grid being serially connected.First wire 2 of multiple solar battery sheets is corresponding in turn to concatenation, and the second wire 4 of multiple solar battery sheets is corresponding in turn to concatenation.That is, the first wire 2 of solar battery sheet is corresponding with the first wire 2 of the solar battery sheet being adjacent connects, and the second wire 4 of solar battery sheet is corresponding connection with the second wire 4 of the solar battery sheet being adjacent.
Electrode design provided by the invention and connection scheme, to improve photogenerated current collection efficiency, reduce cell piece hidden splits, damaged, disconnected grid bring impact and to reduce silver slurry consumption be main purpose.Front electrode eliminates main gate line, replaces welding to connect different cell pieces with intensive wire, and during series welding, every thin grid line all electronically contacts with wire formation grating type, and the back side eliminates back electrode, and wire directly contacts conducting with back surface field.
The solar battery sheet without main grid of the present invention is effectively reduced the consumption that makes of cell piece silver slurry, reduction production cost.And with grid mode collected current, more traditional primary gate electrode designs, and reduces electric current carrying pathway → minimizings resistance loss, avoid simultaneously because of the grid that break, hidden split, loss that the problem such as breakage is brought.With 90 secondary grid, the conventional batteries sheet of 4 main grids as a comparison, according to 55 designing without main grid with thin grid, removes main grid and by thin grid height reduction to original 60%, can save silver slurry consumption and reach 80%, reduce solar cell manufacturing cost.
Above-described embodiment only for technology design and the feature of the present invention are described, are a kind of preferred embodiment, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.The equivalence that all spirit according to the present invention are made changes or modifies, and all should be encompassed within protection scope of the present invention.
Claims (8)
1. the solar battery sheet without main grid, including semiconductor chip, the front electrode being formed on described semiconductor chip front, the backplate that is formed in described backside semiconductor, it is characterized in that: described front electrode is made up of multiple secondary grid, multiple described secondary grid are parallel to each other, and this can also include the first wire of being electrically connected mutually with each described secondary grid by cell piece very much.
2. solar battery sheet according to claim 1, it is characterised in that: described first wire intersects with each described secondary grid and contacts at infall conducting.
3. solar battery sheet according to claim 1, it is characterised in that: described first wire is multiple, and multiple described first conductor spacings are arranged, and each first wire is electrically connected mutually with each described secondary grid respectively.
4. solar battery sheet according to claim 3, it is characterised in that: described first wire is mutually perpendicular to described secondary grid.
5. solar battery sheet according to claim 4, it is characterised in that: multiple described wires are arranged at equal intervals, and multiple described secondary grid are arranged at equal intervals.
6. solar battery sheet according to claim 1, it is characterised in that: described backplate is constituted by carrying on the back electric field, and this solar battery sheet also includes the second wire being electrically connected mutually with described back of the body electric field.
7. a solaode, it is characterised in that: include multiple as arbitrary in claim 1 to 6 as described in solar battery sheet, the first wire of each described solar battery sheet is corresponding in turn to concatenation.
8. solaode according to claim 7, it is characterised in that: described backplate is constituted by carrying on the back electric field, and this solar battery sheet also includes the second wire being electrically connected mutually with described back of the body electric field, and the second wire of each described solar battery sheet is corresponding in turn to concatenation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610268397.1A CN105742381A (en) | 2016-04-27 | 2016-04-27 | Main-grid-line-free solar cell piece and solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610268397.1A CN105742381A (en) | 2016-04-27 | 2016-04-27 | Main-grid-line-free solar cell piece and solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105742381A true CN105742381A (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610268397.1A Pending CN105742381A (en) | 2016-04-27 | 2016-04-27 | Main-grid-line-free solar cell piece and solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105742381A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110174354A1 (en) * | 2010-01-19 | 2011-07-21 | Solarworld Innovations Gmbh | Photovoltaic cell electrode and method for electrically connecting a photovoltaic cell |
| CN103022201A (en) * | 2011-09-27 | 2013-04-03 | 杜邦公司 | Crystal silicon solar battery module and manufacturing method thereof |
| CN203288602U (en) * | 2013-06-23 | 2013-11-13 | 深圳市华光达科技有限公司 | Current collecting device of novel solar cell slice |
| CN103618011A (en) * | 2013-11-19 | 2014-03-05 | 奥特斯维能源（太仓）有限公司 | Non-main-grid double-faced battery pack connected with conductive adhesives |
| CN204834636U (en) * | 2015-04-30 | 2015-12-02 | 比亚迪股份有限公司 | Solar wafer array, solar module |
-
2016
- 2016-04-27 CN CN201610268397.1A patent/CN105742381A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110174354A1 (en) * | 2010-01-19 | 2011-07-21 | Solarworld Innovations Gmbh | Photovoltaic cell electrode and method for electrically connecting a photovoltaic cell |
| CN103022201A (en) * | 2011-09-27 | 2013-04-03 | 杜邦公司 | Crystal silicon solar battery module and manufacturing method thereof |
| CN203288602U (en) * | 2013-06-23 | 2013-11-13 | 深圳市华光达科技有限公司 | Current collecting device of novel solar cell slice |
| CN103618011A (en) * | 2013-11-19 | 2014-03-05 | 奥特斯维能源（太仓）有限公司 | Non-main-grid double-faced battery pack connected with conductive adhesives |
| CN204834636U (en) * | 2015-04-30 | 2015-12-02 | 比亚迪股份有限公司 | Solar wafer array, solar module |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 215542 Jiangsu city of Suzhou province Changshou City Shajiabang Changkun Industrial Park Teng Hui Road No. 1 Applicant after: Suzhou Tenghui Photovoltaic Technology Co., Ltd. Address before: 215542 Jiangsu city of Suzhou province Changshou City Shajiabang Changkun Industrial Park Teng Hui Road No. 1 Applicant before: Zhongli Talesun Solar Technology Co., Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160706 |
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| RJ01 | Rejection of invention patent application after publication |