CN109713066A - A kind of photovoltaic module - Google Patents
A kind of photovoltaic module Download PDFInfo
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- CN109713066A CN109713066A CN201910020371.9A CN201910020371A CN109713066A CN 109713066 A CN109713066 A CN 109713066A CN 201910020371 A CN201910020371 A CN 201910020371A CN 109713066 A CN109713066 A CN 109713066A
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- battery strings
- photovoltaic module
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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 present invention provides a kind of photovoltaic modulies comprising: four battery strings groups and four bypass diodes；Four battery strings groups are sequentially connected in series；Battery strings group includes multiple battery strings parallel with one another, and battery strings include multiple cell pieces being sequentially connected in series；Each battery strings group correspondence is arranged in parallel a bypass diode, and the anode of bypass diode and the cathode of the battery strings of battery strings group are electrically connected, the anode of the battery strings of the cathode and battery strings group of bypass diode is electrically connected, the present invention is based on the photovoltaic modulies of fixed version molded dimension, increase the quantity of bypass diode, when generation cell piece blocks, the area of the cell piece to stop working is reduced, the output power of photovoltaic module when blocking farthest is maintained.
Description
Technical field
The present invention relates to photovoltaic technology field more particularly to a kind of photovoltaic modulies.
Background technique
Photovoltaic module is also solar panel, is the core in solar power system, and effect is by the sun
It can be converted into electric energy, in order to achieve the purpose that photovoltaic module synergy, the design of half photovoltaic module can be used, specifically will
Standard specification cell piece (156 millimeters × 156 millimeters) is uniformly cut into two panels (156 millimeters × 78 millimeters), then with welding into
Row electrical connection.So that it is reduced to a quarter of original full wafer component by the theoretical loss that string hinders caused power, simultaneously
The temperature of power generation operation also decreases compared with full wafer photovoltaic module, so that half photovoltaic module overall power is significantly improved.
Currently, referring to Fig.1, common half photovoltaic module includes six regions A, B, C, D, E, F and 3 bypass diodes
1, wherein each region is made of the cell piece 2 of multiple series connections, secondly, region A is in parallel with region B, constitute battery strings group
1；Region C is in parallel with region D, constitutes battery strings group 2；Region E is in parallel with region F, constitutes battery strings group 3；Finally, battery strings group
1, battery strings group 2, battery strings group 3 are whole again is together in series, and each one bypass diode 1 of battery strings group inverse parallel is each
A bypass diode 1 is all responsible for a battery strings group of entire component, when there is a piece of cell piece 2 hot spot occur, entire component
The cell piece 2 of one third can be all short-circuited, and cause the power loss of one third；And when two bypass diodes 1 are responsible for
Battery strings in when thering is cell piece 2 to be blocked, will cause 2/3rds power loss, and so on.
But at present in scheme, half photovoltaic module in application process, not to the promotion effect of component whole efficiency
It is highly significant, when specific manifestation has cell piece 2 to be blocked in assembly, the power of component loss is larger, usually 33%,
66% or 100%.Such as, in fig. 1, it is assumed that only when thering is cell piece 2 to be blocked in region B and region D, in bypass diode 1
Under the action of, region B, region D, region A and region C can be made all to stop working, cause biggish power loss.
Summary of the invention
The present invention provides a kind of photovoltaic module, when with solution, photovoltaic module has cell piece to be blocked in the prior art, component
The larger problem of the power of loss.
In order to solve the above-mentioned technical problems, the present invention provides a kind of photovoltaic module, the photovoltaic module includes:
Four battery strings groups and four bypass diodes；
Four battery strings groups are sequentially connected in series；
The battery strings group includes multiple battery strings parallel with one another, and the battery strings include multiple be sequentially connected in series
Cell piece；
Each battery strings group correspondence is arranged in parallel the bypass diode, and the anode of the bypass diode
It is electrically connected with the cathode of the battery strings of the battery strings group, the battery of the cathode of the bypass diode and the battery strings group
The anode of string is electrically connected.
Optionally, the battery strings group is rectangular configuration；
Four battery strings groups form sphere of movements for the elephants type structure.
Optionally, long side midpoint or the short side of the sphere of movements for the elephants type structure is arranged in the anode of the photovoltaic module and cathode
Midpoint.
Optionally, in multiple cell pieces being sequentially connected in series that the battery strings include, the adjacent cell piece it
Between using be electrically connected part be electrically connected.
Optionally, the electric connection part is conducting resinl,
In multiple cell pieces being sequentially connected in series that the battery strings include, the cathode of the cell piece stacks setting
In the positive electrode surface of adjacent cell piece, and the conducting resinl is used between the cathode of the cell piece and the anode of adjacent cell piece
It is electrically connected.
The electric connection part is welding.
Optionally, busbar, the battery strings of the battery strings group and adjacent electricity are provided between the adjacent cell string group
Between the correspondence battery strings of pond string group, it is connected in series by the busbar.
Optionally, the battery strings group includes three battery strings parallel with one another, and the cell piece is that 1/N is sliced battery
Piece, wherein 3≤N≤6.
The present invention provides a kind of photovoltaic module, photovoltaic module includes: four battery strings groups and four bypass diodes；Four
A battery strings group is sequentially connected in series；Battery strings group includes multiple battery strings parallel with one another, and battery strings include multiple successively going here and there
Join the cell piece of connection；Each battery strings group is corresponding to be arranged in parallel a bypass diode, and the anode of bypass diode and electricity
The cathode of the battery strings of pond string group is electrically connected, and the cathode of bypass diode electrically connects with the anode of the battery strings of battery strings group
It connects, the present invention is based on the photovoltaic modulies of fixed version molded dimension, increase the quantity of bypass diode, block cell piece occurs
When, the area of the cell piece to stop working is reduced, the output power of photovoltaic module when blocking farthest is maintained,
And the present invention can also be used for the photovoltaic module of different main grid quantity, be also applied for conventional full wafer component, half component, three
The circuit designs such as/mono- slice component, a quarter slice component.
Detailed description of the invention
Fig. 1 is a kind of structure chart for photovoltaic module that background of invention provides；
Fig. 2 is a kind of structure chart of photovoltaic module provided in an embodiment of the present invention；
Fig. 3 is a kind of structure chart of battery strings provided in an embodiment of the present invention；
Fig. 4 is the structure chart of another photovoltaic module provided in an embodiment of the present invention；
Fig. 5 is the structure chart of another battery strings provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
A kind of photovoltaic module provided by the invention is discussed in detail below by several specific embodiments are enumerated.
Referring to Fig. 2, a kind of structure chart of photovoltaic module provided in an embodiment of the present invention is shown.The photovoltaic module includes:
Four battery strings groups, four bypass diodes 20；Four battery strings groups specifically include: battery strings group 10, battery strings group 11, battery
String group 12 and battery strings group 13；Four battery strings groups are sequentially connected in series, and can be set in the frame 30 of pre-set dimension.
With further reference to Fig. 3, a kind of structure chart of battery strings provided in an embodiment of the present invention is shown, battery strings group includes
Multiple battery strings 101 parallel with one another, battery strings 101 include multiple cell pieces 102 being sequentially connected in series；Each battery strings group
It is corresponding to be arranged in parallel a bypass diode 20, and the anode and the cathode of the battery strings 102 of battery strings group of bypass diode 20
It is electrically connected, the anode of the battery strings 102 of the cathode and battery strings group of bypass diode 20 is electrically connected.
In embodiments of the present invention, photovoltaic module further include: front shroud and back shroud；Front shroud and back shroud are arranged on side
On frame, and front shroud covers the light-receiving surface of four battery strings groups, and back shroud covers the shady face of four battery strings groups, in front cover
Encapsulating material layer is also covered between plate, back shroud and cell piece.
It during assembling photovoltaic module, needs for transparent panel and cell piece to be packaged, therefore can be according to saturating
Bright panel+encapsulating material+cell piece sequence, the assembled package under certain technique obtain photovoltaic module finished product.It needs to illustrate
It is that encapsulating material layer can be by ethene-vinyl acetate copolymer material (EVA, ethylene-vinyl acetate
Copolymer) or polyolefin elastomer material (POE, Polyolefin elastomer) is made, both materials have height
Translucency is spent, and there is stronger viscosity, can guarantee the light transmission of photovoltaic module on the basis of encapsulated photovoltaic module.
In embodiments of the present invention, Fig. 2 is illustrated so that the one third of 12 main grids is sliced photovoltaic module as an example, wherein
Cell piece 102 used is to carry out trisection cutting gained to standard specification cell piece.And Fig. 2 shows frame 30 ruler
It is very little to be designed according to common 72 types (6 × 12) photovoltaic module version type, in addition, the embodiment of the present invention also can be applied to 60 types
(6 × 10) photovoltaic module version type.
Further, bypass diode 20 refers to the both ends diode that battery strings group is connected anti-parallel in photovoltaic module,
The cell piece that battery strings group region can be effectively prevented is burnt because of hot spot effect, is the important component of photovoltaic module.
Bypass diode 20 can prevent cell piece under strong light due to partial occlusion, cause some of regions because cannot get illumination
And become load, it generates serious fever and impaired phenomenon occurs.
Specifically, cell piece shielded in a series arm of photovoltaic module, being taken as load consumption, other have light
According to cell piece caused by energy, shielded cell piece can generate heat at this time, and here it is hot spot effects.This effect can be serious
Destruction photovoltaic module so that there is portion of energy caused by the cell piece of illumination, all may shielded cell piece consumed.
Therefore, when hot spot effect, which occurs, in cell piece 102 to generate electricity, bypass diode 20 plays bypass, allows other
Electric current caused by cell piece 102 is flowed out from diode, and photovoltaic module is made to continue to generate electricity, and will not be occurred because of certain a piece of cell piece
Problem and generate the obstructed situation of electricity-generating circuit.
In the both ends parallel connection bypass diode 20 of battery strings, then bypass diode 20 is started to work, a string will to be blocked
The corresponding region of cell piece bypasses, and guarantees that photovoltaic module is working properly, and the cell piece being blocked is protected not to be damaged.
But in this way, there is no covered cell piece in the part region being bypassed yet can not normal power generation, be a kind of damage
It loses.
Therefore, in order to further decrease power loss caused by due to bypass effect, and by the circuit design of photovoltaic module
For layout in common photovoltaic module version type, the cell piece part of photovoltaic module is designed as four battery strings by the embodiment of the present invention
Group, four battery strings groups are integrally in series relationship, each battery strings group is made of three string 101 parallel connections of battery strings, every string electricity
Pond string 101 is again in series by the cell piece 102 of 18 one third pieces, in addition to this, each battery strings group inverse parallel one again
A bypass diode 20, so that there are four bypass diodes 20 altogether for entire photovoltaic module.And the positive and negative anodes extraction of photovoltaic module is set
It counts ipsilateral, forms U-shaped circuit.
It should be noted that the embodiment of the present invention is also applicable in the different photovoltaic module of other main grid quantity, such as 5 main grids, 6 masters
Grid, 7 main grids etc..In addition, cell piece 102 in the embodiment of the present invention can also to be halved to standard specification cell piece,
The cutting gained such as quartering, wherein when cell piece 102 is to carry out halving cutting to standard specification cell piece, battery strings group
In a string of battery strings include 12 cell pieces；When cell piece 102 is to carry out quartering cutting to standard specification cell piece, battery
A string of battery strings include 16 cell pieces in string group.
Further, according to the photovoltaic module size of 60 editions types, then when cell piece 102 be to standard specification cell piece into
When row halves cutting, a string of battery strings include 10 cell pieces in battery strings group；When cell piece 102 is to standard specification battery
When piece carries out trisection cutting, a string of battery strings include 15 cell pieces in battery strings group；When cell piece 102 is to standard specification
When cell piece carries out quartering cutting, a string of battery strings include 20 cell pieces in battery strings group.
In addition, according to the photovoltaic module size of other edition type, it is series-parallel that one can also be increased in each battery strings group
Battery strings, so that reaching in a battery strings group includes four battery strings parallel with one another, to reduce the heat in each battery strings
Loss.
In embodiments of the present invention, referring to Fig. 2, it is assumed that when there is cell piece 102 in battery strings group 13, there are eclipse phenomenas, then
Under the effect of the corresponding bypass diode 20 of battery strings group 13, entire battery strings group 13 can be only made to stop working, at this time function
Rate loss is only 25%, far below lowest power loss 33% in Fig. 1 of the prior art.
In conclusion a kind of photovoltaic module provided in an embodiment of the present invention, comprising: four battery strings groups and four bypasses two
Pole pipe；Four battery strings groups are sequentially connected in series；Battery strings group includes multiple battery strings parallel with one another, and battery strings include multiple
The cell piece being sequentially connected in series；Each battery strings group correspondence is arranged in parallel a bypass diode, and bypass diode is just
The cathode of the battery strings of pole and battery strings group is electrically connected, the anode electricity of the battery strings of the cathode and battery strings group of bypass diode
Property connection, the present invention is based on the photovoltaic modulies of fixed version molded dimension, increase the quantity of bypass diode, hide cell piece occurs
When gear, the area of the cell piece to stop working is reduced, farthest maintains the output work of photovoltaic module when blocking
Rate, and the present invention can also be used for the photovoltaic module of different main grid quantity, be also applied for conventional full wafer component, half group
The circuit designs such as part, one third slice component, a quarter slice component.
Optionally, referring to Fig. 2, battery strings group is rectangular configuration；Four battery strings groups form sphere of movements for the elephants type structure.
Optionally, referring to Fig. 2, long side midpoint or the short side of sphere of movements for the elephants type structure is arranged in the anode and cathode of photovoltaic module
Midpoint.
In embodiments of the present invention, common 60 type (6 × 10) photovoltaic module version type and 72 types (6 × 12) photovoltaic group are based on
Part version type, structure are rectangle, therefore, in embodiments of the present invention, can use the battery strings group of rectangular configuration, and make
Four battery strings groups are symmetrically formed sphere of movements for the elephants type structure two-by-two.Its purpose is to match common 60 type (6 × 10) photovoltaic group
Part version type and 72 types (6 × 12) photovoltaic module version type structure form U so that the anode and cathode of photovoltaic module are in the same side
Type loop structure.Certainly, in the case where not considering photovoltaic module version type, four battery strings groups of photovoltaic module can also be arranged
Line-styled structure is formed at other shapes, such as four battery strings groups.In addition, four battery strings groups due to be series connection, so
101 quantity of battery strings in parallel and the size of cell piece 102 must be consistent in battery strings group, otherwise will lead to electric current mismatch.
Specifically, Fig. 2 shows the anodes and cathode of photovoltaic module, and setting for the short side midpoint of sphere of movements for the elephants type structure is arranged in
Meter scheme.Furthermore it is also possible to which it illustrates the length that sphere of movements for the elephants type structure is arranged in the anode and cathode of photovoltaic module referring to Fig. 4
The design scheme at side midpoint.
Optionally, Fig. 3, in multiple cell pieces 102 being sequentially connected in series that battery strings 101 include, adjacent cell piece
It is electrically connected between 102 using electric connection part 40.
It in embodiments of the present invention, can be in order to guarantee the electric connection in battery strings 101 between adjacent cell piece 102
So that the cathode of previous piece of cell piece 102 is electrically connected the anode of every piece of cell piece 102 by being electrically connected part 40 therewith
It connects, completes the series connection of cell piece 102.
Optionally, in an implementation of the embodiment of the present invention, being electrically connected part 40 includes welding.
In this implementation, part can be electrically connected for arranging there are certain gap between adjacent cell piece 102
40, being electrically connected part 40 can be welding, and welding can be tin-coated copper strip, have good electric property.
Optionally, referring to Fig. 5, in another implementation of the embodiment of the present invention, being electrically connected part includes conducting resinl
50, in multiple cell pieces 102 being sequentially connected in series that battery strings 101 include, the cathode of cell piece 102, which stacks, to be arranged in phase
The positive electrode surface of adjacent cell piece 102, and conducting resinl 50 is used between the cathode of cell piece 102 and the anode of adjacent cell piece 102
It is electrically connected.
In this implementation, the arrangement of battery strings 101 can also use imbricated texture, pass through the heap of similar roof sheet tile
Stack structure improves the compact of photovoltaic module, reduces its occupied space.
Optionally, referring to Fig. 2, be provided with busbar 60 between adjacent cell string group, the battery strings of battery strings group with it is adjacent
Between the correspondence battery strings of battery strings group, it is connected in series by busbar 60.In embodiments of the present invention, busbar 60 is used to incite somebody to action
Adjacent cell string group is connected in series, and specially the cell piece with busbar at battery strings both ends are connected by being electrically connected part.
Furthermore it is also possible to arrange bypass diode 20 on busbar 60, the protective effect to photovoltaic module is played.
Optionally, battery strings group includes three battery strings parallel with one another, and cell piece is that 1/N is sliced cell piece, wherein 3
≤N≤6。
In embodiments of the present invention, based on common 60 types (6 × 10) photovoltaic module version type and 72 types (6 × 12) photovoltaic group
The battery chip size (156 millimeters × 156 millimeters) of part version type and standard specification, it is preferred that each battery strings group may include
Three battery strings parallel with one another.In addition, cell piece 102 in the embodiment of the present invention can also for standard specification cell piece into
Row 1/N etc. points of cutting gained, 3≤N≤6, wherein when cell piece 102 is to carry out halving cutting to standard specification cell piece,
A string of battery strings include 12 cell pieces in battery strings group；When cell piece 102 is to carry out the quartering to standard specification cell piece to cut
When cutting, a string of battery strings include 16 cell pieces in battery strings group.
Further, according to the photovoltaic module size of 60 editions types, then when cell piece 102 be to standard specification cell piece into
When row halves cutting, a string of battery strings include 10 cell pieces in battery strings group；When cell piece 102 is to standard specification battery
When piece carries out trisection cutting, a string of battery strings include 15 cell pieces in battery strings group；When cell piece 102 is to standard specification
When cell piece carries out quartering cutting, a string of battery strings include 20 cell piece in battery strings group
In conclusion a kind of photovoltaic module provided in an embodiment of the present invention, comprising: four battery strings groups and four bypasses two
Pole pipe；Four battery strings groups are sequentially connected in series；Battery strings group includes multiple battery strings parallel with one another, and battery strings include multiple
The cell piece being sequentially connected in series；Each battery strings group correspondence is arranged in parallel a bypass diode, and bypass diode is just
The cathode of the battery strings of pole and battery strings group is electrically connected, the anode electricity of the battery strings of the cathode and battery strings group of bypass diode
Property connection, the present invention is based on the photovoltaic modulies of fixed version molded dimension, increase the quantity of bypass diode, hide cell piece occurs
When gear, the area of the cell piece to stop working is reduced, farthest maintains the output work of photovoltaic module when blocking
Rate, and the present invention can also be used for the photovoltaic module of different main grid quantity, be also applied for conventional full wafer component, half group
The circuit designs such as part, one third slice component, a quarter slice component.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (8)
1. a kind of photovoltaic module, which is characterized in that the photovoltaic module includes:
Four battery strings groups and four bypass diodes；
Four battery strings groups are sequentially connected in series；
The battery strings group includes multiple battery strings parallel with one another, and the battery strings include multiple batteries being sequentially connected in series
Piece；
Each battery strings group correspondence is arranged in parallel the bypass diode, and the anode of the bypass diode and institute
The cathode for stating the battery strings of battery strings group is electrically connected, the battery strings of the cathode of the bypass diode and the battery strings group
Anode is electrically connected.
2. photovoltaic module according to claim 1, which is characterized in that
The battery strings group is rectangular configuration；
Four battery strings groups form sphere of movements for the elephants type structure.
3. photovoltaic module according to claim 2, which is characterized in that the anode and cathode of the photovoltaic module are arranged in institute
State the long side midpoint or short side midpoint of sphere of movements for the elephants type structure.
4. photovoltaic module according to claim 1, which is characterized in that in multiple companies of being sequentially connected in series that the battery strings include
In the cell piece connect, it is electrically connected between the adjacent cell piece using electric connection part.
5. photovoltaic module according to claim 4, which is characterized in that the electric connection part is conducting resinl；
In multiple cell pieces being sequentially connected in series that the battery strings include, the cathode of the cell piece, which stacks, to be arranged in phase
The positive electrode surface of adjacent cell piece, and carried out between the cathode of the cell piece and the anode of adjacent cell piece using the conducting resinl
It is electrically connected.
6. photovoltaic module according to claim 4, which is characterized in that the electric connection part is welding.
7. photovoltaic module according to claim 1, which is characterized in that be provided with confluence between the adjacent cell string group
Item is connected in series between the battery strings and the corresponding battery strings of adjacent cell string group of the battery strings group by the busbar.
8. photovoltaic module according to claim 1, which is characterized in that the battery strings group includes three electricity parallel with one another
Pond string, the cell piece are that 1/N is sliced cell piece, wherein 3≤N≤6.
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| CN110165009A (en) * | 2019-05-05 | 2019-08-23 | 泰州隆基乐叶光伏科技有限公司 | A kind of photovoltaic module and component string |
| CN110534586A (en) * | 2019-09-25 | 2019-12-03 | 天合光能股份有限公司 | A kind of slice photovoltaic module |
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| CN110534586A (en) * | 2019-09-25 | 2019-12-03 | 天合光能股份有限公司 | A kind of slice photovoltaic module |
| CN110634980A (en) * | 2019-09-26 | 2019-12-31 | 苏州腾晖光伏技术有限公司 | High-performance crystalline silicon battery pack and solar cell panel |
| CN110649112A (en) * | 2019-09-26 | 2020-01-03 | 苏州腾晖光伏技术有限公司 | Optimized crystalline silicon battery assembly and solar cell panel |
| CN115004382A (en) * | 2019-11-20 | 2022-09-02 | 韩华Qcells有限公司 | Solar module |
| CN115004382B (en) * | 2019-11-20 | 2023-06-13 | 韩华Qcells有限公司 | Solar energy module |
| US11777044B2 (en) | 2019-11-20 | 2023-10-03 | Hanwha Q Cells Gmbh | Solar module |
| CN115714579A (en) * | 2023-01-10 | 2023-02-24 | 深圳市中旭新能源有限公司 | Symmetrical integrated double-type combined area optimized photovoltaic module and MLPE power generation system |
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