CN209328911U - A kind of photovoltaic module - Google Patents
A kind of photovoltaic module Download PDFInfo
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- CN209328911U CN209328911U CN201920034574.9U CN201920034574U CN209328911U CN 209328911 U CN209328911 U CN 209328911U CN 201920034574 U CN201920034574 U CN 201920034574U CN 209328911 U CN209328911 U CN 209328911U
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- battery strings
- photovoltaic module
- cell piece
- group
- cathode
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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
Abstract
The utility model provides a kind of photovoltaic module 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, photovoltaic module of the utility model based on 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 utility model 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.
Utility model content
The utility model provides a kind of photovoltaic module, when with solution, photovoltaic module has cell piece to be blocked in the prior art,
The larger problem of the power of component loss.
In order to solve the above-mentioned technical problem, the utility model provides a kind of photovoltaic module, and 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 utility model provides a kind of photovoltaic module, and photovoltaic module includes: four battery strings groups and four two poles of bypass
Pipe；Four battery strings groups are sequentially connected in series；Battery strings group includes multiple battery strings parallel with one another, battery strings include it is multiple according to
The cell piece of secondary series connection；Each battery strings group correspondence is arranged in parallel a bypass diode, and the anode of bypass diode
It is electrically connected with the cathode of the battery strings of battery strings group, the anode of the battery strings of the cathode and battery strings group of bypass diode is electrically
Connection, photovoltaic module of the utility model based on fixed version molded dimension, increases the quantity of bypass diode, and cell piece is occurring
When blocking, the area of the cell piece to stop working is reduced, farthest maintains the output of photovoltaic module when blocking
Power, and the utility model can also be used for the photovoltaic module of different main grid quantity, be also applied for conventional full wafer component, half
The circuit designs such as piece component, one third slice component, a quarter slice component.
Detailed description of the invention
Fig. 1 is a kind of structure chart for photovoltaic module that the utility model background technique provides；
Fig. 2 is a kind of structure chart of photovoltaic module provided by the embodiment of the utility model；
Fig. 3 is a kind of structure chart of battery strings provided by the embodiment of the utility model；
Fig. 4 is the structure chart of another photovoltaic module provided by the embodiment of the utility model；
Fig. 5 is the structure chart of another battery strings provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that the embodiments are a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, fall within the protection scope of the utility model.
A kind of photovoltaic module provided by the utility model is discussed in detail below by several specific embodiments are enumerated.
Referring to Fig. 2, a kind of structure chart of photovoltaic module provided by the embodiment of the utility model is shown.The photovoltaic module packet
It includes: four battery strings groups, four bypass diodes 20；Four battery strings groups specifically include: battery strings group 10, battery strings group 11,
Battery strings group 12 and battery strings group 13；Four battery strings groups are sequentially connected in series, and the frame 30 in pre-set dimension can be set
In.
With further reference to Fig. 3, a kind of structure chart of battery strings provided by the embodiment of the utility model, battery strings group are shown
Including multiple battery strings 101 parallel with one another, battery strings 101 include multiple cell pieces 102 being sequentially connected in series；Each battery
String group is corresponding to be arranged in parallel a bypass diode 20, and the anode of bypass diode 20 and the battery strings 102 of battery strings group
Cathode is electrically connected, and the anode of the battery strings 102 of the cathode and battery strings group of bypass diode 20 is electrically connected.
In the utility model embodiment, photovoltaic module further include: front shroud and back shroud；Front shroud and back shroud setting
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, preceding
Encapsulating material layer is also covered between cover board, 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 the utility model embodiment, Fig. 2 is illustrated so that the one third of 12 main grids is sliced photovoltaic module as an example,
In, cell piece 102 used is to carry out trisection cutting gained to standard specification cell piece.And Fig. 2 shows frame 30
Size be designed according to common 72 types (6 × 12) photovoltaic module version type, in addition, the utility model embodiment can also answer
For 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 electricity by the utility model embodiment
Pond string 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, often
Battery strings 101 of going here and there are again in series by the cell piece 102 of 18 one third pieces, in addition to this, each battery strings group again it is anti-simultaneously
Join a bypass diode 20, so that there are four bypass diodes 20 altogether for entire photovoltaic module.And the positive and negative anodes of photovoltaic module draw
It designs out ipsilateral, forms U-shaped circuit.
It should be noted that the utility model embodiment is also applicable in the different photovoltaic module of other main grid quantity, such as 5 is main
Grid, 6 main grids, 7 main grids etc..In addition, cell piece 102 in the utility model embodiment can also for standard specification cell piece into
The cutting gained such as row bisection, quartering, 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 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 the utility model embodiment, referring to Fig. 2, it is assumed that blocked now when there is cell piece 102 to exist in battery strings group 13
As, then under the effect of the corresponding bypass diode 20 of battery strings group 13, entire battery strings group 13 can only be made to stop working, this
When power loss be only 25%, far below in Fig. 1 of the prior art lowest power loss 33%.
In conclusion a kind of photovoltaic module provided by the embodiment of the utility model, comprising: four battery strings groups and four sides
Road diode；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 bypass diode
Anode and the cathode of the battery strings of battery strings group be electrically connected, the battery strings of the cathode of bypass diode and battery strings group are just
Pole is electrically connected, and photovoltaic module of the utility model based on fixed version molded dimension increases the quantity of bypass diode, occurring
When cell piece blocks, the area of the cell piece to stop working is reduced, farthest maintains photovoltaic module when blocking
Output power, and the utility model can also be used for the photovoltaic module of different main grid quantity, be also applied for conventional full wafer
The circuit designs such as component, half component, 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 the utility model embodiment, it is based on common 60 type (6 × 10) photovoltaic module version type and 72 types (6 × 12) light
Component version type is lied prostrate, structure is rectangle, therefore, in the utility model embodiment, can use the battery strings of rectangular configuration
Group, and four battery strings groups is made to be symmetrically formed sphere of movements for the elephants type structure two-by-two.Its purpose is to match common 60 type (6 ×
10) photovoltaic module version type and 72 types (6 × 12) photovoltaic module version type structure, so that the anode and cathode of photovoltaic module are in same
Side forms U-shaped loop structure.Certainly, in the case where not considering photovoltaic module version type, four battery strings groups of photovoltaic module are also
Other shapes can be arranged in, such as four battery strings groups form line-styled structure.In addition, four battery strings groups are due to being string
Connection, so the size of 101 quantity of battery strings and cell piece 102 in parallel in battery strings group must be consistent, otherwise will lead to electric current
It mismatches.
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.
In the utility model embodiment, in order to guarantee the electric connection in battery strings 101 between adjacent cell piece 102,
Can make every piece of cell piece 102 anode therewith the cathode of previous piece of cell piece 102 by be electrically connected part 40 carry out electricity
Gas connection, completes the series connection of cell piece 102.
Optionally, in a kind of implementation of the utility model embodiment, 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 utility model embodiment, being electrically connected part includes leading
Electric glue 50, in multiple cell pieces 102 being sequentially connected in series that battery strings 101 include, the cathode of cell piece 102 stacks setting
In the positive electrode surface of adjacent cell piece 102, and using conduction between the cathode of cell piece 102 and the anode of adjacent cell piece 102
Glue 50 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 the utility model embodiment, busbar 60 is used
It is connected in series in by adjacent cell string group, specially the cell piece with busbar at battery strings both ends are by being electrically connected part phase
Even.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 the utility model embodiment, based on common 60 types (6 × 10) photovoltaic module version type and 72 types (6 × 12) light
Lie prostrate the battery chip size (156 millimeters × 156 millimeters) of component version type and standard specification, it is preferred that each battery strings group can be with
Including three battery strings parallel with one another.In addition, the cell piece 102 in the utility model embodiment can also be for standard specification
Cell piece carries out 1/N etc. points of cutting gained, 3≤N≤6, wherein when cell piece 102 is second-class to carry out to standard specification cell piece
When cutting is cut, a string of battery strings include 12 cell pieces in battery strings group；When cell piece 102 is to carry out to standard specification cell piece
When the quartering is cut, 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 by the embodiment of the utility model, comprising: four battery strings groups and four sides
Road diode；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 bypass diode
Anode and the cathode of the battery strings of battery strings group be electrically connected, the battery strings of the cathode of bypass diode and battery strings group are just
Pole is electrically connected, and photovoltaic module of the utility model based on fixed version molded dimension increases the quantity of bypass diode, occurring
When cell piece blocks, the area of the cell piece to stop working is reduced, farthest maintains photovoltaic module when blocking
Output power, and the utility model can also be used for the photovoltaic module of different main grid quantity, be also applied for conventional full wafer
The circuit designs such as component, half component, 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 above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be wanted with right
Subject to the protection scope asked.
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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| CN201920034574.9U CN209328911U (en) | 2019-01-09 | 2019-01-09 | A kind of photovoltaic module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109713066A (en) * | 2019-01-09 | 2019-05-03 | 泰州隆基乐叶光伏科技有限公司 | A kind of photovoltaic module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713066A (en) * | 2019-01-09 | 2019-05-03 | 泰州隆基乐叶光伏科技有限公司 | A kind of photovoltaic module |
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