CN209328924U - High efficient two-sided photovoltaic module - Google Patents
High efficient two-sided photovoltaic module Download PDFInfo
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- CN209328924U CN209328924U CN201821288794.6U CN201821288794U CN209328924U CN 209328924 U CN209328924 U CN 209328924U CN 201821288794 U CN201821288794 U CN 201821288794U CN 209328924 U CN209328924 U CN 209328924U
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- cell piece
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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
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Abstract
The utility model discloses a kind of high efficient two-sided photovoltaic modulies, it include multiple concatenated cell pieces in battery strings inside photovoltaic module, it is characterized in that each positive pole-face of cell piece and the unit for electrical property parameters in cathode face are same gear, in each battery strings, the positive and negative pole-face of adjacent cell piece is back towards to the welding between adjacent cell piece is connected in linear type.Structure based on the utility model can obtain following effect: at cell piece edge without high stress point, welding thickness can be increased accordingly welding, and component power output is high；Assembly reliability is promoted, and can more bear the temperature difference causes welding contracting to be risen bring component breakage risk；Component internal cell piece gap can further reduce, lifting assembly efficiency, and cell piece gap can reduce to mechanical performance of the 0.5mm or less without influencing component.
Description
Technical field
The utility model belongs to photovoltaic field, especially solar energy double-sided electrification component field.
Background technique
Solar energy is a kind of clean energy resource, and the working mechanism of photovoltaic module is that solar energy is converted directly into electric energy.Crystal silicon
Photovoltaic generating electricity on two sides component generally presses preceding tempered glass, front adhesive film layer, solar energy double-sided battery lamella, rear adhesive film, rear tempering
The sequence of glass or transparent back panel carries out laminating packaging after stacking gradually, and metal edge frame is optionally loaded onto component periphery,
It is installed convenient for component and fixed, while promoting the mechanical resistance energy of photovoltaic module, protection solar battery sheet works normally.Alright
Encapsulation can make photovoltaic cell is long-term, efficient, stable to continue working.
Crystal silicon solar batteries piece is generally anode on one side, and another side is cathode.As shown in Figure 1, existing crystalline substance on the market
In the design of body silicon double-side assembly, between the adjacent two panels cell piece of component internal, usually using tin-coated copper welding by a piece of cell piece
Positive pole-face be connected to down the cathode face of a piece of cell piece, realize the series connection between cell piece.Due to two adjacent cell pieces
Between welding be the back side that another is connected to from a piece of front, limit cell piece between gap cannot be too small, generally
Minimum 2mm or so easily causes the position of cell piece edge welding band broken if small again during component lamination encapsulation
It splits, also, the S-shaped connection type of this welding of cell piece stress at cell piece edge seal is big, influences assembly reliability, this
The thickness for also limiting welding can not increase, and the thicker component internal resistance of welding and power loss are smaller, i.e. component output power is bigger.
Double-sided solar battery piece is the battery chip architecture that a kind of front and back can realize independent photoelectric conversion, group
After part installation, component can receive from backside reflection and dissipate incoming sunlight, realizes photoelectric conversion, generally regards different peaces
Environment is filled, the power generation gain of the double-side assembly back side is generally 5%~30 and differs.
In addition, the encapsulation of photovoltaic module is required also increasingly to refine with the continuous development of solar-photovoltaic technology,
It is required that the efficiency (output power i.e. on component unit area) of component also requires to get over while component can continue efficient operation
Come higher, monolithic element area is smaller, it is meant that mountable component count is more under same area, and component mounting means also has more
Flexibility.In general components, since cell piece gap is inevitable, component area, general inter-module are added somewhat to
Gap accounts for the 3%~5% of component area.
Utility model content
The utility model is directed to the problem of background technique, proposes a kind of high efficient two-sided photovoltaic module, photovoltaic group
It include multiple concatenated cell pieces in battery strings inside part, it is characterised in that the electrical property of each cell piece positive pole-face and cathode face
Parameter is same gear, and in each battery strings, the positive and negative pole-face of adjacent cell piece is back towards to welding between adjacent cell piece
It is connected in linear type.
As an implementation, the two longitudinally adjacent string positive and negative pole-faces of battery strings are arranged in the same direction.
As another embodiment, the two longitudinally adjacent string positive and negative pole-faces of battery strings are alternately arranged.
Preferably, the welding is tin-coated copper welding.
Specifically, 0.15~0.5mm of thickness of the tin-coated copper welding, 0.2~2mm of width, length are according to cell piece
Actual size determine.
Specifically, the tin-coated copper welding length between two full wafer cell pieces is 295~315mm for 6 inches of cell pieces,
The two tin-coated copper welding length for cutting half-cell piece are 135~155mm.
The beneficial effects of the utility model
1. welding is at cell piece edge without high stress point, welding thickness can be increased accordingly, and component power output is high；
2. assembly reliability is promoted, can more bear the temperature difference causes welding contracting to be risen bring component breakage risk；
3. component internal cell piece gap can further reduce, lifting assembly efficiency, cell piece gap can reduce to
Mechanical performance of the 0.5mm or less without influencing component.
Detailed description of the invention
Fig. 1 is component internal cell piece routine connection type in background technique
Fig. 2 is the connection type of component internal cell piece in the utility model
Fig. 3 is the first type-setting mode of cell piece
Fig. 4 is second of type-setting mode of cell piece
Specific embodiment
Below with reference to embodiment, the utility model is described in further detail, but the protection scope of the utility model is not limited to
This:
It include multiple concatenated electricity in the battery strings inside photovoltaic module as shown in Fig. 2, a kind of high efficient two-sided photovoltaic module
Pond piece 1, the unit for electrical property parameters in the positive pole-face of each cell piece 1 and cathode face are same gear, in each battery strings, adjacent cell piece 1
Positive and negative pole-face back towards to welding 2 between adjacent cell piece is connected in linear type.
Preferably, the welding 2 is tin-coated copper welding.
In preferred embodiment, 0.15~0.5mm of thickness of the tin-coated copper welding, 0.2~2mm of width, length are root
It is determined according to the actual size of cell piece.For 6 inches of cell pieces, the tin-coated copper welding length between two full wafer cell pieces is 295
~315mm, the two tin-coated copper welding length for cutting half-cell piece are 135~155mm.
In conjunction with Fig. 3, as the first type-setting mode of the utility model cell piece, two longitudinally adjacent string battery strings are positive and negative
Pole-face is alternately arranged.
In conjunction with Fig. 4, as second of type-setting mode of the utility model cell piece, two longitudinally adjacent string battery strings are positive and negative
Pole-face is arranged in the same direction.
Based on the utility model proposes welding structure, can obtain it is following the utility model has the advantages that
1. welding 2 is at 1 edge of cell piece without high stress point, 2 thickness of welding can be increased accordingly, and component power output is high；
2. assembly reliability is promoted, can more bear the temperature difference causes welding contracting to be risen bring component breakage risk；
3. component internal cell piece gap can further reduce, lifting assembly efficiency, 1 gap of cell piece can reduce to
Mechanical performance of the 0.5mm or less without influencing component.
Specific embodiment described herein is only to illustrate to the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (2)
- It include multiple concatenated cell pieces (1) in the battery strings inside photovoltaic module 1. a kind of high efficient two-sided photovoltaic module, it is special Sign is that the unit for electrical property parameters in the positive pole-face of each cell piece (1) and cathode face is same gear, in each battery strings, adjacent cell piece (1) positive and negative pole-face is back towards to the welding (2) between adjacent cell piece is connected in linear type；Two longitudinally adjacent string electricity The pond positive and negative pole-face of string is alternately arranged；0.15~0.5mm of thickness of tin-coated copper welding, 0.2~2mm of width, for 6 inches of batteries Piece, the tin-coated copper welding length between two full wafer cell pieces is 295~315mm, and two cut the tin-coated copper welding length of half-cell piece For 135~155mm.
- 2. high efficient two-sided photovoltaic module according to claim 1, it is characterised in that the welding (2) is tin-coated copper welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821288794.6U CN209328924U (en) | 2018-08-10 | 2018-08-10 | High efficient two-sided photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821288794.6U CN209328924U (en) | 2018-08-10 | 2018-08-10 | High efficient two-sided photovoltaic module |
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| Publication Number | Publication Date |
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| CN209328924U true CN209328924U (en) | 2019-08-30 |
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| CN201821288794.6U Active CN209328924U (en) | 2018-08-10 | 2018-08-10 | High efficient two-sided photovoltaic module |
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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 |
| CN112201720A (en) * | 2020-09-30 | 2021-01-08 | 浙江晶科能源有限公司 | Solar cell module preparation method and solar cell module |
-
2018
- 2018-08-10 CN CN201821288794.6U patent/CN209328924U/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 |
| CN112201720A (en) * | 2020-09-30 | 2021-01-08 | 浙江晶科能源有限公司 | Solar cell module preparation method and solar cell module |
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