CN209859957U - Silicon heterojunction solar cell series structure - Google Patents
Silicon heterojunction solar cell series structure Download PDFInfo
- Publication number
- CN209859957U CN209859957U CN201921067546.3U CN201921067546U CN209859957U CN 209859957 U CN209859957 U CN 209859957U CN 201921067546 U CN201921067546 U CN 201921067546U CN 209859957 U CN209859957 U CN 209859957U
- Authority
- CN
- China
- Prior art keywords
- battery
- cell
- adjacent
- pieces
- receiving surface
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a silicon heterojunction solar cell series structure, which comprises a plurality of cells and a solder strip, wherein the cells comprise a cell with a PN junction on the illuminated surface of the cell and a cell with a PN junction on the backlight surface of the cell, the emitting electrodes of two adjacent cells face different directions, the anode of one cell faces the illuminated surface, and the two adjacent cells are the cathodes and face the illuminated surface; the battery pieces are connected through the welding strips to form a battery string, the positive electrodes of the two adjacent battery pieces are oppositely arranged, one end of each welding strip is welded on the positive electrode of one battery piece and faces the light receiving surface, and the other end of each welding strip is welded on the negative electrode of the adjacent battery piece and faces the light receiving surface. The utility model can make the pressure stress of the battery piece more uniform, and can adopt thinner battery pieces and packaging adhesive films to make assemblies, thereby greatly reducing the weight of the photovoltaic assembly and saving the packaging cost; moreover, the series design can reduce the space between the battery pieces, increase the effective power generation area of the photovoltaic module and increase the photoelectric conversion efficiency of the photovoltaic module.
Description
Technical Field
The utility model relates to a solar energy technical field, concretely relates to silicon heterojunction solar cell series structure.
Background
In the manufacturing process of the solar module, the traditional battery interconnection technology is to weld the positive electrode and the negative electrode of a plurality of battery units together by using welding strips. In a battery string generally composed of a plurality of batteries, the positive electrodes of all the batteries face in the same direction, and the serial connection of two adjacent batteries is in a mode that the front and the back of the two adjacent batteries are overlapped, that is, one end of a welding strip is welded on the front of one battery, and the other end of the welding strip is welded on the back of the battery adjacent to the welding strip (fig. 1). Under the connection mode, the welding strip can generate compressive stress on the edge part of the battery piece, if the thickness of the battery piece is thinner, a thicker packaging adhesive film is needed to bear the compressive stress on the edge part, otherwise, the battery piece is easily damaged. This increases the weight of the photovoltaic module, as well as increasing the module packaging cost. On the other hand, a certain distance is needed between the cells, generally 1-3 mm, the invalid power generation area of the photovoltaic module is increased, and the output power of the module in unit area is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a silicon heterojunction solar cell series connection structure to prior art's defect and not enough.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a silicon heterojunction solar cell series structure, includes a plurality of battery piece and solder strip, its innovation point lies in: the battery piece comprises a battery piece with a PN junction positioned on the light receiving surface of the battery and a battery piece with a PN junction positioned on the backlight surface of the battery, the emitting electrodes of two adjacent battery pieces face different directions, the positive electrode of one battery piece faces the light receiving surface, and the two adjacent battery pieces are the negative electrodes and face the light receiving surface; the battery pieces are connected through a welding strip to form a battery string, positive electrodes of two adjacent battery pieces are oppositely arranged, one end of the welding strip is welded on a positive electrode light-receiving surface of one battery piece, and the other end of the welding strip is welded on a negative electrode light-receiving surface of the adjacent battery piece, so that the battery string is formed through welding.
Furthermore, the battery pieces are battery pieces with the same output current gear.
Furthermore, when two adjacent battery pieces are welded, the welding strip is horizontally placed, and the positive electrode and the negative electrode of the two adjacent battery pieces are connected together.
After the structure is adopted, the utility model discloses beneficial effect does:
the utility model has the advantages that on one hand, the compressive stress on the battery piece is uniform, the battery piece and the packaging adhesive film can be made into a module by adopting thinner battery pieces, the weight of the photovoltaic module is greatly reduced, and the packaging cost is saved; on the other hand, the series design can reduce the space between the battery pieces, increase the effective power generation area of the photovoltaic module and increase the photoelectric conversion efficiency of the photovoltaic module; the utility model discloses can reduce the battery piece interval to below 1mm, reduce welding broken piece risk simultaneously, can adopt ultra-thin battery piece and thinner encapsulation glued membrane, reduce subassembly weight. Compared with the traditional battery series connection method, the photoelectric conversion efficiency of the component can be increased by 1%.
Drawings
FIG. 1 is a background art drawing;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a front view of the battery string and the solder strip layout of the present invention;
fig. 4 is a layout view of the back surface and the solder strip of the battery string of the present invention.
Wherein: 1 battery piece and 2 welding strips.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.
Referring to fig. 2-4, a silicon heterojunction solar cell series structure comprises a plurality of cells 1 and solder strips 2, wherein each cell 1 comprises a cell with a PN junction on a light receiving surface of the cell and a cell with a PN junction on a backlight surface of the cell, emitters of two adjacent cells face different directions, an anode of one cell faces the light receiving surface, and two adjacent cells are cathodes of the two cells face the light receiving surface; the battery pieces 1 are connected through the welding strips 2 to form a battery string, positive electrodes of two adjacent battery pieces are oppositely arranged, one end of each welding strip 2 is welded on a positive electrode light-receiving surface of one battery piece, and the other end of each welding strip is welded on a negative electrode light-receiving surface of the adjacent battery piece, so that the battery string is formed through welding.
In this embodiment, the battery piece 1 is a battery piece with the same output current gear, so that the conversion efficiency of the battery piece in the assembly is optimal, and the loss caused by current mismatch is reduced to the greatest extent.
In this embodiment, when two adjacent battery pieces 1 are welded, the welding strip 2 is placed horizontally, and the positive and negative electrodes of the two adjacent battery pieces are connected together, so that the compressive stress applied to the battery pieces 1 is relatively uniform, and a module can be made of thinner battery pieces and packaging adhesive films, thereby greatly reducing the weight of the photovoltaic module and saving the packaging cost.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (3)
1. The utility model provides a silicon heterojunction solar cell series structure, includes a plurality of battery piece and solder strip, its characterized in that: the battery piece comprises a battery piece with a PN junction positioned on the light receiving surface of the battery and a battery piece with a PN junction positioned on the backlight surface of the battery, the emitting electrodes of two adjacent battery pieces face different directions, the positive electrode of one battery piece faces the light receiving surface, and the two adjacent battery pieces are the negative electrodes and face the light receiving surface; the battery pieces are connected through a welding strip to form a battery string, positive electrodes of two adjacent battery pieces are oppositely arranged, one end of the welding strip is welded on a positive electrode light-receiving surface of one battery piece, and the other end of the welding strip is welded on a negative electrode light-receiving surface of the adjacent battery piece, so that the battery string is formed through welding.
2. The silicon heterojunction solar cell series structure of claim 1, wherein: the battery pieces are battery pieces with the same output current gear.
3. The silicon heterojunction solar cell series structure of claim 1, wherein: when two adjacent battery pieces are welded, the welding strip is horizontally placed, and the positive electrode and the negative electrode of the two adjacent battery pieces are connected together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921067546.3U CN209859957U (en) | 2019-07-10 | 2019-07-10 | Silicon heterojunction solar cell series structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921067546.3U CN209859957U (en) | 2019-07-10 | 2019-07-10 | Silicon heterojunction solar cell series structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209859957U true CN209859957U (en) | 2019-12-27 |
Family
ID=68942913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921067546.3U Active CN209859957U (en) | 2019-07-10 | 2019-07-10 | Silicon heterojunction solar cell series structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209859957U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200036A (en) * | 2020-01-13 | 2020-05-26 | 任建丽 | Arrangement mode of photovoltaic cells in crystalline silicon photovoltaic cell assembly |
| CN111200037A (en) * | 2020-01-13 | 2020-05-26 | 任建丽 | Connection mode of photovoltaic cell in crystalline silicon photovoltaic cell assembly |
| CN113707746A (en) * | 2021-08-17 | 2021-11-26 | 江苏爱康科技股份有限公司 | Heterojunction battery assembly with approximate zero battery piece interval and preparation method thereof |
-
2019
- 2019-07-10 CN CN201921067546.3U patent/CN209859957U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111200036A (en) * | 2020-01-13 | 2020-05-26 | 任建丽 | Arrangement mode of photovoltaic cells in crystalline silicon photovoltaic cell assembly |
| CN111200037A (en) * | 2020-01-13 | 2020-05-26 | 任建丽 | Connection mode of photovoltaic cell in crystalline silicon photovoltaic cell assembly |
| CN113707746A (en) * | 2021-08-17 | 2021-11-26 | 江苏爱康科技股份有限公司 | Heterojunction battery assembly with approximate zero battery piece interval and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209859957U (en) | Silicon heterojunction solar cell series structure | |
| CN202049982U (en) | Solar photovoltaic assembly with parallel type battery cell strings | |
| CN209328924U (en) | High efficient two-sided photovoltaic module | |
| CN114864721A (en) | Main-grid-free photovoltaic module, preparation method thereof and welding strip welding method | |
| CN116759479B (en) | IBC battery piece photovoltaic module and preparation method thereof | |
| CN109037364B (en) | Double-sided direct-connection solar cell module with segmented through holes and preparation method | |
| CN115260922B (en) | Adhesive film and photovoltaic module | |
| CN217485460U (en) | Photovoltaic module | |
| EP4109743A1 (en) | Flexible and rollable back-contact solar cell module and preparation method thereof | |
| CN211295113U (en) | High-efficiency back contact solar cell module | |
| CN214753806U (en) | Photovoltaic module | |
| CN212257417U (en) | Photovoltaic module | |
| CN212725330U (en) | Curved surface photovoltaic module | |
| CN207425873U (en) | A kind of double side photovoltaic battery component | |
| CN214203701U (en) | Photovoltaic module | |
| WO2018157496A1 (en) | Solar cell assembly having high generating power | |
| CN108987508A (en) | The direct-connected solar cell module of single side and preparation method | |
| CN215896420U (en) | Photovoltaic module | |
| CN212848427U (en) | CIGS solar cell module with frame | |
| CN215118915U (en) | Prevent latent battery pack that splits | |
| CN209104167U (en) | The direct-connected solar cell module of single side | |
| CN210956696U (en) | Gasket suitable for shingled photovoltaic module and shingled photovoltaic module | |
| CN217086590U (en) | Flexible back contact solar cell module that can curl | |
| CN210156394U (en) | Back contact solar cell photovoltaic module | |
| CN212848428U (en) | CIGS solar cell module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |