CN112993060A - Novel solar cell - Google Patents
Novel solar cell Download PDFInfo
- Publication number
- CN112993060A CN112993060A CN201911273626.9A CN201911273626A CN112993060A CN 112993060 A CN112993060 A CN 112993060A CN 201911273626 A CN201911273626 A CN 201911273626A CN 112993060 A CN112993060 A CN 112993060A
- Authority
- CN
- China
- Prior art keywords
- solar cell
- solar cells
- grid
- light receiving
- main grid
- 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.)
- Withdrawn
Links
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 12
- 239000010703 silicon Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims abstract description 3
- 229910000679 solder Inorganic materials 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- H01L31/02—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
- H01L31/022433—Particular geometry of the grid contacts
-
- 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)
- Sustainable Energy (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)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a novel solar cell which comprises a plurality of solar cells, wherein each solar cell comprises a silicon wafer, a positive electrode and a negative electrode, the negative electrode is arranged on the light receiving surface of the silicon wafer, the positive electrode is arranged on the back surface opposite to the light receiving surface of the silicon wafer, the negative electrode comprises a main grid and an auxiliary grid which are mutually and vertically arranged in a crossed manner, the main grid and the auxiliary grid are metal wires, the main grid is provided with a plurality of hollow grooves, the width of the joint of the auxiliary grid and the main grid is slightly wider than the width of other parts, the plurality of solar cells are connected in sequence, two adjacent solar cells are connected through a welding strip, and the light receiving surfaces of two adjacent solar cells are opposite to each other. Through the mode, the use amount of the metal paste in the electrode printing process can be reduced.
Description
Technical Field
The invention relates to the field of photovoltaics, in particular to a novel solar cell.
Background
Under the condition of energy shortage nowadays, solar cells are attracting much attention as a renewable resource. In addition, since the solar cell does not cause environmental pollution, the solar cell industry receives great attention all over the world.
In the prior art, electrodes of a solar cell are usually prepared by printing conductive paste made of metallic silver, and the electrodes are generally completely filled with the conductive silver paste, which increases the unit consumption cost of the silver paste.
Disclosure of Invention
The invention mainly solves the technical problem of providing a novel solar cell, which can reduce the usage amount of metal slurry in the electrode printing process.
In order to solve the technical problems, the invention adopts a technical scheme that: the novel solar cell comprises a plurality of solar cells, wherein each solar cell comprises a silicon wafer, a positive electrode and a negative electrode, the negative electrode is arranged on the light receiving surface of the silicon wafer, the positive electrode is arranged on the back surface opposite to the light receiving surface of the silicon wafer, the negative electrode comprises a main grid and an auxiliary grid which are perpendicular to each other and are arranged in a crossed mode, the main grid and the auxiliary grid are both metal wires, the main grid is provided with a plurality of hollowed grooves, the width of the joint of the auxiliary grid and the main grid is slightly wider than the width of other parts, the plurality of solar cells are connected in sequence, two adjacent solar cells are connected through a welding strip, and the light receiving surfaces of two adjacent solar cells are opposite to each other.
Wherein, the surface of the solder strip is provided with a light reflection coating.
Wherein, the shape of the hollow-out groove is rectangle or ellipse.
The invention has the beneficial effects that: compared with the prior art, the novel solar cell has the advantages that the main grid of the negative electrode is provided with the plurality of hollow grooves, so that the using amount of metal slurry in the electrode printing process can be reduced, and the conductive capacity of the front electrode of the solar cell can be maintained or increased.
Drawings
Fig. 1 is a schematic structural diagram of a novel solar cell according to an embodiment of the invention.
Fig. 2 is a schematic view of the structure of the negative electrode in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2 together, the novel solar cell according to the embodiment of the invention includes a plurality of solar cells 1, each solar cell 1 includes a silicon wafer 11, a positive electrode 12 and a negative electrode 13, the negative electrode 13 is disposed on a light receiving surface of the silicon wafer 11, the positive electrode 12 is disposed on a back surface of the silicon wafer 11 opposite to the light receiving surface, the negative electrode 13 includes a main grid 131 and a sub-grid 132 which are perpendicularly crossed with each other, the main grid 131 and the sub-grid 132 are both metal wires, the main grid 131 is provided with a plurality of hollow grooves 133, a width of a connection portion of the sub-grid 132 and the main grid 131 is slightly wider than widths of other portions, the plurality of solar cells 1 are sequentially connected, two adjacent solar cells 1 are connected by a solder strip 2, and positions of the light receiving surfaces of two adjacent solar cells 1 are. In the present embodiment, the surface of the solder strip 2 is provided with a light-reflecting coating (not shown.)
Because the light receiving surfaces of two adjacent solar cells 1 are opposite, that is, the light receiving surfaces of the solar cells 1 are the same as the back surfaces of the adjacent solar cells 1, when assembling, the solder strips 2 are arranged in parallel to realize the connection of the two adjacent solar cells 1, the solder strips 2 do not need to be bent, and the fracture probability of the solder strips 2 can be reduced.
The shape of the hollow-out groove 133 on the negative electrode 13 may be rectangular or elliptical, and in this embodiment, the shape of the hollow-out groove 133 is rectangular.
Through the manner, the novel solar cell provided by the embodiment of the invention has the advantages that the plurality of hollow-out grooves 211 are formed in the main grid 21, so that the use amount of metal paste in the electrode printing process can be reduced, and the conductivity of the front electrode of the solar cell can be maintained or increased.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (3)
1. The novel solar cell is characterized by comprising a plurality of solar cells, wherein each solar cell comprises a silicon wafer, a positive electrode and a negative electrode, the negative electrode is arranged on the light receiving surface of the silicon wafer, the positive electrode is arranged on the back surface opposite to the light receiving surface of the silicon wafer, the negative electrode comprises a main grid and an auxiliary grid which are perpendicular to each other and arranged in a crossed mode, the main grid and the auxiliary grid are both metal wires, the main grid is provided with a plurality of hollow grooves, the width of the joint of the auxiliary grid and the main grid is slightly wider than the width of other parts, the plurality of solar cells are connected in sequence, two adjacent solar cells are connected through a welding strip, and the light receiving surfaces of two adjacent solar cells are opposite to each other.
2. The novel solar cell as claimed in claim 1, characterized in that the surface of the solder strip is provided with a light-reflecting coating.
3. The novel solar cell of claim 1, wherein the shape of the hollowed-out groove is rectangular or elliptical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911273626.9A CN112993060A (en) | 2019-12-12 | 2019-12-12 | Novel solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911273626.9A CN112993060A (en) | 2019-12-12 | 2019-12-12 | Novel solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112993060A true CN112993060A (en) | 2021-06-18 |
Family
ID=76331733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911273626.9A Withdrawn CN112993060A (en) | 2019-12-12 | 2019-12-12 | Novel solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112993060A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117199152A (en) * | 2023-09-11 | 2023-12-08 | 淮安捷泰新能源科技有限公司 | Solar cell and preparation method thereof |
-
2019
- 2019-12-12 CN CN201911273626.9A patent/CN112993060A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117199152A (en) * | 2023-09-11 | 2023-12-08 | 淮安捷泰新能源科技有限公司 | Solar cell and preparation method thereof |
| CN117199152B (en) * | 2023-09-11 | 2024-06-04 | 淮安捷泰新能源科技有限公司 | Solar cell and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210618 |