CN110473934A - A kind of photovoltaic module and preparation method thereof - Google Patents
A kind of photovoltaic module and preparation method thereof Download PDFInfo
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- CN110473934A CN110473934A CN201910882834.2A CN201910882834A CN110473934A CN 110473934 A CN110473934 A CN 110473934A CN 201910882834 A CN201910882834 A CN 201910882834A CN 110473934 A CN110473934 A CN 110473934A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 230000002441 reversible effect Effects 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims description 30
- 239000004020 conductor Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 230000015556 catabolic process Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 17
- 238000003491 array Methods 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000004446 light reflex Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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
- H01L31/04—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 adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
-
- 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 invention discloses a kind of photovoltaic modulies and preparation method thereof.In the photovoltaic module in same stacks of cells, it is electrically connected between first tie point of two the first battery strings groups and the second tie point of two the second battery strings groups by wire jumper, wire jumper includes the first sub-portion and the second sub-portion interconnected, the different same diodes of sub-portion reverse parallel connection that arbitrarily there is the first battery strings group of public point and the second battery strings group to pass through wire jumper respectively；Wherein, corresponding two diodes of each stacks of cells are set in same terminal box.Technical solution provided in an embodiment of the present invention, under the premise of guaranteeing that diode is not breakdown, the quantity of cell piece increases in each battery strings group, and then avoids the problem of diode easily led to when increasing cell piece quantity in photovoltaic module is reversed breakdown appearance.
Description
Technical field
The present embodiments relate to field of photovoltaic power generation more particularly to a kind of photovoltaic module and preparation method thereof.
Background technique
With the continuous development of photovoltaic power generation technology, photovoltaic module is gradually applied to the every field of social life, standby
Favored by user.
Fig. 1 is the circuit diagram of photovoltaic module in the prior art.As shown in Figure 1, photovoltaic module packet in the prior art
12 battery strings 1 are included, every two battery strings 1 constitute cascaded structure 2, and every two cascaded structure 2 constitutes parallel-connection structure 3, each parallel connection
It connects between structure 3.Further, every two constitutes the same diode 4 of 2 reverse parallel connection of cascaded structure of parallel-connection structure 3, each
5 quantity of cell piece that diode 4 is protected is 5 quantity of cell piece in cascaded structure 2, i.e. total cell piece 5 in two battery strings 1
Quantity, therefore, the quantity of cell piece 5 is caused total in photovoltaic module by 4 reverse withstand voltage energy power limit of diode in battery strings 1
5 quantity of cell piece can not increase, and influence the promotion of photovoltaic module performance.
Summary of the invention
The present invention provides a kind of photovoltaic module and preparation method thereof, to guarantee that diode will not be reversed the premise of breakdown
Under, increase cell piece quantity in photovoltaic module, and then promote the performance of photovoltaic module.
In a first aspect, the embodiment of the invention provides a kind of photovoltaic modulies, including at least one stacks of cells, the electricity
Cell stack includes the first battery unit and the second battery unit being connected in parallel；
First battery unit includes two the first battery strings groups being connected in series, and the first battery strings group includes extremely
Few first battery strings, when the quantity of at least one first battery strings is greater than or equal to 2, first battery strings are simultaneously
Connection；
Second battery unit includes two the second battery strings groups being connected in series, and the second battery strings group includes extremely
Few second battery strings, when the quantity of at least one second battery strings is greater than or equal to 2, second battery strings are simultaneously
Connection；
Battery strings in each battery strings group include the cell piece that quantity is equal and is connected in series；
In the same stacks of cells, the first tie point of two the first battery strings groups of the series connection with it is described
It is electrically connected between second tie point of two the second battery strings groups being connected in series by wire jumper, the wire jumper includes being connected with each other
The first sub-portion and the second sub-portion, any the first battery strings group with public point and the second battery strings group difference
Pass through the different same diodes of sub-portion reverse parallel connection of the wire jumper；
Corresponding two diodes of each stacks of cells are set in same terminal box.
Second aspect, the embodiment of the invention also provides a kind of preparation methods of photovoltaic module, comprising:
The main circuit of the photovoltaic module is formed, the main circuit includes at least one stacks of cells, the battery list
Tuple includes the first battery unit and the second battery unit being connected in parallel；First battery unit includes two be connected in series
A first battery strings group, the first battery strings group include at least one first battery strings, at least one described first battery strings
Quantity when being greater than or equal to 2, the first battery strings group is in parallel；Second battery unit includes be connected in series two the
Two battery strings groups, the second battery strings group include at least one second battery strings, the number of at least one second battery strings
When amount is greater than or equal to 2, second battery is series-parallel；Battery strings in each battery strings group include that quantity is equal and series connection connects
The cell piece connect；
At least one wire jumper is formed, the wire jumper is electrically connected two first of series connection described in the stacks of cells
Second tie point of two the second battery strings groups of the first tie point and series connection of battery strings group；The wire jumper includes
First sub-portion and the second sub-portion interconnected；
Multiple diodes are electrically connected with the main circuit and the wire jumper, each diode with arbitrarily have
The different sub-portions that the first battery strings group of public point and the second battery strings group pass through the corresponding wire jumper respectively are anti-
To parallel connection, wherein corresponding two diodes of each stacks of cells are set in same terminal box.
Technical solution provided in an embodiment of the present invention passes through the first electricity of two series connections in each stacks of cells
A wire jumper is electrically connected between first tie point of pond string group and the second tie point of the second battery strings group of two series connections,
Wherein, wire jumper includes the first sub-portion and the second sub-portion interconnected, and is arbitrarily with public by the different sub-portions of wire jumper
The the first battery strings group and the same diode of the second battery strings group reverse parallel connection of endpoint so that diode only with one
First battery strings group and a second battery strings group are in parallel, compared to the prior art in each diode and two the first battery strings
The quantity of the mode of group and two the second battery strings group parallel connections, the battery strings group of diodes in parallel is reduced, and is guaranteeing diode not
Under the premise of breakdown, the quantity of cell piece increases in each battery strings group, and then avoids and increase cell piece in photovoltaic module
The problem of diode is reversed breakdown appearance is easily led to when quantity.In addition, having identical number of batteries in compared to the prior art
The photovoltaic module of piece, the single string of batteries piece quantity of each diode reverse parallel connection is more in photovoltaic module provided in an embodiment of the present invention
Few, hot spot temperature is lower.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the circuit diagram of photovoltaic module in the prior art；
Fig. 2 is a kind of circuit diagram of photovoltaic module provided in an embodiment of the present invention；
Fig. 3 is the circuit diagram of another photovoltaic module provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of photovoltaic module in Fig. 3；
Fig. 5 is the schematic diagram of the section structure of the dotted line AB along Fig. 4；
Fig. 6 is a kind of cross section structure schematic diagram of wire jumper provided in an embodiment of the present invention；
Fig. 7 is a kind of flow diagram of the preparation method of photovoltaic module provided in an embodiment of the present invention.
Description of symbols
1- battery strings；
2- cascaded structure；
3- parallel-connection structure；
4- diode；
5- cell piece；
100- stacks of cells；
The first battery unit of 110-；
The second battery unit of 120-；
111- the first battery strings group；
121- the second battery strings group；
The first battery strings of 101-；
The second battery strings of 102-；
201- cell piece；
300- wire jumper；
The first sub-portion of 310-；
The second sub-portion of 320-；
200- diode；
The first tie point of O-；
The second tie point of P-；
400- insulating layer；
10- battery chip arrays；
301- center conductor；
302- peripheral insulating layers；
500-L type lead-out wire；
The first side 501-；
The second side 502-.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, specific embodiment, knot to a kind of photovoltaic module proposed according to the present invention and preparation method thereof
Structure, feature and its effect, detailed description is as follows.
The embodiment of the invention provides a kind of photovoltaic modulies, including at least one stacks of cells, the stacks of cells
Including the first battery unit and the second battery unit being connected in parallel；
First battery unit includes two the first battery strings groups being connected in series, and the first battery strings group includes extremely
Few first battery strings, when the quantity of at least one first battery strings is greater than or equal to 2, first battery strings are simultaneously
Connection；
Second battery unit includes two the second battery strings groups being connected in series, and the second battery strings group includes extremely
Few second battery strings, when the quantity of at least one second battery strings is greater than or equal to 2, second battery strings are simultaneously
Connection；
Battery strings in each battery strings group include the cell piece that quantity is equal and is connected in series；
In the same stacks of cells, the first tie point of two the first battery strings groups of the series connection with it is described
It is electrically connected between second tie point of two the second battery strings groups being connected in series by wire jumper, the wire jumper includes being connected with each other
The first sub-portion and the second sub-portion, any the first battery strings group with public point and the second battery strings group difference
Pass through the different same diodes of sub-portion reverse parallel connection of the wire jumper；
Corresponding two diodes of each stacks of cells are set in same terminal box.
Technical solution provided in an embodiment of the present invention passes through the first electricity of two series connections in each stacks of cells
A wire jumper is electrically connected between first tie point of pond string group and the second tie point of the second battery strings group of two series connections,
Wherein, wire jumper includes the first sub-portion and the second sub-portion interconnected, and is arbitrarily with public by the different sub-portions of wire jumper
The the first battery strings group and the same diode of the second battery strings group reverse parallel connection of endpoint so that diode only with one
First battery strings group and a second battery strings group are in parallel, compared to the prior art in each diode and two the first battery strings
The quantity of the mode of group and two the second battery strings group parallel connections, the battery strings group of diodes in parallel is reduced, and is guaranteeing diode not
Under the premise of breakdown, the quantity of cell piece increases in each battery strings group, and then avoids and increase cell piece in photovoltaic module
The problem of diode is reversed breakdown appearance is easily led to when quantity.
It is the core concept of the application above, following will be combined with the drawings in the embodiments of the present invention, to the embodiment of the present invention
In technical solution be clearly and completely described, it is clear that described embodiments are only a part of the embodiments of the present invention,
Instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative labor
Under the premise of dynamic, every other embodiment obtained be shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, but the present invention can be with
Implemented using other than the one described here other embodiments, those skilled in the art can be without prejudice in the present invention
Similar popularization is done in the case where culvert, therefore the present invention is not limited by the specific embodiments disclosed below.
Secondly, combination schematic diagram of the present invention is described in detail, when describing the embodiments of the present invention, for purposes of illustration only, table
The schematic diagram of showing device device architecture not makees partial enlargement according to general proportion, and the schematic diagram is example,
This should not limit the scope of protection of the invention.In addition, the three-dimensional space of length, width and height should be included in actual fabrication
Size.
Fig. 2 is a kind of circuit diagram of photovoltaic module provided in an embodiment of the present invention.Fig. 3 is that the embodiment of the present invention provides
Another photovoltaic module circuit diagram.As shown in Figures 2 and 3, photovoltaic module includes at least one stacks of cells
100, stacks of cells 100 includes the first battery unit 110 and the second battery unit 120 being connected in parallel, the first battery unit
110 include two the first battery strings groups 111 being connected in series, and the first battery strings group 111 includes at least one first battery strings
101, when the quantity of at least one the first battery strings 101 is greater than or equal to 2, the first battery strings 101 are in parallel, the second battery unit
120 include concatenated two the second battery strings groups 121, and the second battery strings group 121 includes at least one second battery strings 102, until
When the quantity of few second battery strings 102 is greater than or equal to 2, the second battery strings 102 are in parallel, and the battery strings in battery strings group are equal
Cell piece 201 equal including quantity and being connected in series.In same stacks of cells 100, the first battery of two series connections
Pass through wire jumper between first tie point O of string group 111 and the second tie point P of the second battery strings group 121 of two series connections
300 electrical connections, wire jumper 300 include the first sub-portion 310 interconnected and the second sub-portion 320, any the with public point
One battery strings group 111 and the second battery strings group 121 pass through the same diode 200 of different sub-portion reverse parallel connections of wire jumper 300 respectively,
Wherein, 100 corresponding two diodes 200 of each stacks of cells are set in same terminal box.
Wherein, diode 200 can be avoided the first battery strings group 111 or the second battery strings group 121 in parallel therewith and be hidden
Hot spot effect is generated when gear.Also, by the first battery unit 110 and the second battery unit 120 in each stacks of cells 100
Reason in parallel is: when all cell pieces 201 are connected, the output voltage at photovoltaic module both ends is larger, such setting energy
Enough so that the output voltage of photovoltaic module reduces half.
It should be noted that wire jumper 300 is used to be electrically connected the first tie point O and the second tie point P, with other conductive structures
Insulation.The present embodiment specifically limit wire jumper 300 and other conductive structures insulation mode, illustratively, wire jumper 300 and other
Insulating layer can be set between conductive structure, alternatively, wire jumper 300 includes peripheral insulating layers.
It should also be noted that, the present embodiment is only illustrated by taking the structure of Fig. 2 and Fig. 3 as an example and non-limiting, in this reality
It applies in the other embodiments of example, photovoltaic module can also meet the structure of above-mentioned condition for other.
In the present embodiment, first sub-portion 310 and the second sub-portion 320 can be an integral molding structure in wire jumper 300, can also
Discrete structure is thought, preferably, the two is an integral molding structure, in order to prepare.
In addition, 100 corresponding two diodes 200 of each stacks of cells are set to the setting in same terminal box,
Be conducive to simplify photovoltaic module structure.It is understood that can be by 100 corresponding two diodes 200 of each stacks of cells
It is respectively arranged in a terminal box, the corresponding all diodes 200 of each stacks of cells 100 can also be set to same connect
In wire box, the present embodiment is not especially limited this.
Technical solution provided in this embodiment passes through the first electricity of two series connections in each stacks of cells 100
It is electrically connected between first tie point O of pond string group 111 and the second tie point P of the second battery strings group 121 of two series connections
One wire jumper 300, wherein wire jumper 300 includes the first sub-portion 310 interconnected and the second sub-portion 320, and passes through wire jumper 300
Different sub-portions be that any the first battery strings group 111 with public point and the second battery strings group 121 are reversed simultaneously
In conjunction with a diode 200 so that diode 200 only with a first battery strings group 111 and a second battery strings group 121 simultaneously
Connection, compared to the prior art in each diode 200 and two the first battery strings groups 111 and two the second battery strings groups 121 simultaneously
The quantity of the mode of connection, the battery strings group in parallel of diode 200 is reduced, under the premise of guaranteeing that diode 200 is not breakdown, often
The quantity of cell piece 201 increases in a battery strings group, and then avoids and easily lead to when increasing by 210 quantity of cell piece in photovoltaic module
The problem of the being reversed breakdown appearance of diode 200.
Further, with continued reference to Fig. 3, the quantity of at least one stacks of cells 100 is greater than or equal to 2, adjacent cell
It connects between unit group 100.
It is understood that in the other embodiments of the present embodiment, it can also be simultaneously between adjacent cell group 100
Connection, the present embodiment are not especially limited this, are only illustrated for connecting between adjacent cell group 100 herein.
Optionally, cell piece 201 can be the half piece as made of the cutting of full wafer cell piece or one third piece electricity
Pond piece.
On this basis, as shown in Fig. 2, the number of at least one the first battery strings 101 and at least one the second battery strings 102
Amount all can be 3.Illustratively, with continued reference to Fig. 2, the quantity of at least one stacks of cells 100 can be 1.
Optionally, as shown in figure 3, the quantity of at least one the first battery strings 101 and at least one the second battery strings 102 is equal
It can be 1.Illustratively, with continued reference to Fig. 3, the quantity of at least one stacks of cells 100 can be 3.
It should be noted that using cutting after part full wafer cell piece as cell piece 201 by the way of can reach drop
The beneficial effect of low entire photovoltaic module internal resistance energy consumption.
It should also be noted that, photovoltaic electric resistance structure shown in Fig. 2 and Fig. 3 has been all made of the normal of photovoltaic module in the prior art
Width, i.e., the width of 6 battery strings are advised, and then the characteristic size of photovoltaic module will not be significantly increased, convenient for layout, avoids and sets
Difficulty is counted to increase.
Optionally, the quantity of cell piece 201 described in the first battery strings 101 and the second battery strings 102 is greater than or equal to 12
Piece.
It should be noted that conventional diode is at best able to the cell piece quantity of protection by its reverse withstand voltage energy power limit
No more than 24, for photovoltaic module in the prior art shown in Fig. 1, the backward voltage of each diode is equal to the two of its parallel connection
The total voltage of string series-connected battery string, therefore most 12 of the quantity of cell piece, the electricity in photovoltaic module shown in Fig. 1 in each battery strings
Pond piece quantity is no more than 144.And in photovoltaic module provided in this embodiment, the backward voltage of each diode is equal to it
The total voltage of a battery strings group in parallel, since same battery strings group is in parallel, the total voltage of battery strings group is equal to a battery
The voltage of string, the i.e. backward voltage of diode be equal to a battery strings voltage, at this point, in each battery strings cell piece quantity
It at most can be 24, i.e., be up to 12 schemes, light provided in this embodiment relative to cell piece quantity in Fig. 1 battery strings
The quantity for lying prostrate cell piece in each battery strings in component, which can increase, to be twice, and then in the case where battery strings quantity is equal, photovoltaic
The total quantity of cell piece can increase one times in component.Based on above-mentioned analysis, the first battery strings and the second electricity are arranged in the present embodiment
The quantity of cell piece is all larger than most cell piece quantity that battery strings in the prior art may include in the string of pond, i.e., and 12, to protect
Under the premise of demonstrate,proving photovoltaic module normal work, increase the quantity of cell piece in photovoltaic module, obtains more excellent compared to the prior art
Good device performance.And the quantity that cell piece in the first battery strings and the second battery strings is arranged simultaneously can be equal to electricity in the prior art
Most cell piece quantity that pond string may include, i.e., 12, the cell piece quantity of each diodes in parallel can much smaller than it at this time
The cell piece quantity at most carried, middle diode need to carry 12 cell pieces using maximum reverse pressure resistance compared to the prior art,
In technical solution provided in this embodiment influenced to cause diode behavior to fluctuate by fabrication error so that diode reverse breakdown
Probability is effectively reduced.
Optionally, Fig. 4 is the structural schematic diagram of photovoltaic module in Fig. 3.As shown in figure 4, the cell piece 201 in photovoltaic module
It arranges in matrix, wire jumper 300 extends along matrix column direction Y.Fig. 5 is the schematic diagram of the section structure of the dotted line AB along Fig. 4.Such as figure
Shown in 5, on the vertical direction Z of 10 place plane of cell piece matrix, wire jumper 300 and 10 part of cell piece matrix are overlapping, at least
Insulating layer 400 is provided in overlapping region between wire jumper 300 and cell piece matrix 10.
It should be noted that wire jumper 300 is usually the conductor formed using conductive material, when it is deposited with battery chip arrays 10
When overlapping, it is easy to wire jumper 300 for realizing the interconnecting strip (not illustrating) being electrically connected between cell piece and overlaps, if the two is direct
Contact will lead to electrical connection, and then influence the normal work of photovoltaic module.Therefore, between wire jumper 300 and battery chip arrays 10
Insulating layer 400 is set, to guarantee that wire jumper 300 and the insulation of interconnecting strip (not shown), insulating layer 400 are at least set to the two crossover region
Domain.It is understood that insulating layer 400 can also be set in peripheral region simultaneously, as shown in figure 5, this reality for convenient for preparation
It applies example and this is not especially limited, as long as not influencing the normal work of photovoltaic module.
Illustratively, insulating layer 400 can be reflective membrane.
It should be noted that reflective membrane in addition to insulating effect can also other light reflexs, be conducive to photovoltaic module device
The promotion of part performance.
Illustratively, with continued reference to Fig. 5, along the line direction X of cell piece matrix 10, the width and wire jumper 300 of insulating layer 400
Width difference be greater than or equal to 5mm.Referring to fig. 4, along cell piece matrix column direction Y, the length of insulating layer 400 is greater than battery
The length of piece matrix, and less than the distance between the first tie point O and the second tie point P.
It should be noted that avoid fabrication error from leading to the physical location and predeterminated position of wire jumper 300 and insulating layer 400
There are deviation, cause to misplace between the two, the width of setting insulating layer 400 is greater than the width of wire jumper 300, and insulating layer is arranged
The shift length of 400 width, twice of fabrication error at least bigger than the width of wire jumper 300 is illustratively missed according to common process
The difference of the width of the width and wire jumper 300 of difference setting insulating layer 400 is equal to or is equal to 5mm.
Similarly, the length that insulating layer 400 is arranged is greater than the length of battery chip arrays, and in order to avoid the influence of insulating layer 400
Wire jumper 300 is electrically connected with the first tie point O's and the second tie point P, and the length of insulating layer 400 is arranged less than the first tie point
Length between O and the second tie point P.
In addition, under the premise of can play insulating effect, the more Bao Yuehao that insulating layer 400 is arranged splits to avoid lamination
Piece.
Illustratively, adjacent cell piece 201 is connected by interconnecting strip electricity (not shown) in battery strings, in battery chip arrays institute
In the vertical direction of plane, wire jumper 300 and interconnecting strip (not shown) no overlap.
It should be noted that molding interconnecting strip (not shown) has certain height, it is raised in cell piece array surface
On, to avoid the lamination of wire jumper 300, insulating layer 400 and interconnecting strip (not shown) from further increasing local height, and then occur
The problem of being laminated sliver, setting wire jumper 300 and interconnecting strip (not shown) no overlap.
Optionally, L-type is electrically connected with continued reference to Fig. 4, the first sub-portion 310 of wire jumper 300 and the tie point of the second sub-portion 320
Lead-out wire 500, the first side 501 and the wire jumper 300 of L-type lead-out wire 500 are fitted and connected, and the second side 502 of L-type lead-out wire 500 is hung down
The directly plane where battery chip arrays, any the first battery strings group 111 with public point and the second battery strings group 112 difference
Pass through the same diode 200 of different sub-portions and 500 reverse parallel connection of L-type lead-out wire of wire jumper 300.
It should be noted that L-type lead-out wire 500 is the dielectric that wire jumper 300 is electrically connected with corresponding two diodes 200,
Such setting simple process is easily implemented, and can reduce connecting line quantity, and the structure for being conducive to photovoltaic module simplifies.In addition, L
Second side 502 of type lead-out wire 500 can be directly electrically connected with diode 200, no longer needed to that connecting wire additionally is arranged, be conducive to
Simplify Joining Technology.
It should also be noted that, the present embodiment only passes through L-type lead-out wire 500 with wire jumper 300 and corresponding two diodes 200
It is illustrated for electrical connection and non-limiting, any structure that can be realized wire jumper 300 and corresponding two diodes 200 electrical connection
In the protection scope of the present embodiment.
Optionally, Fig. 6 is a kind of cross section structure schematic diagram of wire jumper provided in an embodiment of the present invention.As shown in fig. 6, wire jumper
300 may include center conductor 301 and the peripheral insulating layers 302 for being wrapped in 301 outside of center conductor.
It should be noted that when wire jumper 300 and other conductor structures with the structure contact, 302 energy of peripheral insulating layers
Insulating effect is enough played, without additional setting insulating layer, is conducive to the simplification of photovoltaic module structure and technique.
Illustratively, the Thickness of wire jumper 300 may range from 0.05~0.15mm, the width value model of wire jumper 300
Enclosing can be 1~5mm.
It should be noted that the excessive integral thickness that will affect photovoltaic module of the thickness of wire jumper 300, the thickness of wire jumper 300
It is too small to will affect its electrical property, in addition, wide its space occupied that will lead to of the width of wire jumper 300 is larger, increase wire jumper 300
The probability being electrically connected with cell piece matrix, the width of wire jumper 300 is too small may to will affect wire jumper 300 and the first tie point and second
The electrical property connection performance of tie point, accordingly, the present embodiment be preferably arranged wire jumper 300 Thickness range be 0.05~
0.15mm, the width value range of wire jumper 300 are 1~5mm.
It is worth noting that, the photovoltaic module in compared to the prior art, using technical side provided by the embodiments of the present application
In the photovoltaic module that case is formed, the single string of batteries piece quantity of each diode reverse parallel connection is reduced, with diode reverse parallel connection
The total power consumption of all cell pieces reduces, when single battery piece is blocked, other power of cell piece reaction on the cell piece
It reduces, and then effectively reduces the hot spot temperature of photovoltaic module.
Fig. 7 is a kind of flow diagram of the preparation method of photovoltaic module provided in an embodiment of the present invention.As shown in fig. 7,
The preparation method of photovoltaic module specifically includes as follows:
Step 11, the main circuit for forming photovoltaic module, main circuit includes at least one stacks of cells, stacks of cells packet
Include the first battery unit and the second battery unit being connected in parallel；First battery unit includes two the first batteries being connected in series
String group, the first battery strings group include at least one first battery strings, and the quantity of at least one the first battery strings is greater than or equal to 2
When, the first battery strings group is in parallel；Second battery unit includes two the second battery strings groups being connected in series, the second battery strings group packet
At least one second battery strings is included, when the quantity of at least one the second battery strings is greater than or equal to 2, the second battery is series-parallel；Electricity
Battery strings in the string group of pond include the cell piece that quantity is equal and is connected in series.
Specifically, each cell piece is placed in predetermined position on transparent protective substrate, adopted according to default connection relationship
Belong to each cell pieces of same battery strings with interconnecting strip electrical connection, then using busbar realize parallel connection between corresponding battery strings,
Parallel connection between series connection between corresponding battery strings group, and corresponding battery unit.
Step 12 forms at least one wire jumper, and wire jumper is electrically connected the first battery of two series connections in stacks of cells
Second tie point of the first tie point of string group and the second battery strings group of two series connections, wire jumper include interconnected the
One sub-portion and the second sub-portion.
Illustratively, the cell piece in photovoltaic module can arrange in matrix, and wire jumper extends along matrix column direction, along square
The vertical direction of plane where battle array, wire jumper and matrix part are overlapping, are formed before at least one wire jumper, further includes: on matrix
Form insulating layer, overlapping region of the insulating layer at least formed on wire jumper and matrix.
Alternatively, optional, wire jumper includes center conductor and the peripheral insulating layers that are wrapped on the outside of center conductor, is formed at least
Before one wire jumper, further includes: wrap up peripheral insulating layers, on the outside of center conductor to form wire jumper.
It should be noted that the present embodiment is between wire jumper and cell piece matrix only to be arranged insulating layer, and by wire jumper
Structure setting be center conducting wire on the outside of package peripheral insulating layers for, to realize wire jumper and battery chip arrays insulation mode into
Row explanation, it is any to can be realized the mode to insulate between wire jumper and cell piece matrix in the protection scope of the present embodiment.
Multiple diodes are electrically connected by step 13 with main circuit and wire jumper, and each diode is and arbitrarily with public
The the first battery strings group and the second battery strings group of endpoint pass through the different sub-portion reverse parallel connections of corresponding wire jumper respectively, wherein each
Corresponding two diodes of stacks of cells are set in same terminal box.
Optionally, multiple diodes are electrically connected with main circuit and wire jumper, each diode is and arbitrarily with public
The the first battery strings group and the second battery strings group of endpoint pass through the different sub-portion reverse parallel connections of wire jumper respectively, comprising: jump at every
The tie point of line is electrically connected a L-type lead-out wire, and the first side and the wire jumper of L-type lead-out wire are fitted and connected, the second side of L-type lead-out wire
Perpendicular to plane, the common end of any first battery strings group and the second battery strings group in stacks of cells where cell piece matrix
It puts and connects a diode between corresponding second side, any the first battery strings group and the second battery strings component with public point
Not by the different sub-portions and the same diode of L-type lead-out wire reverse parallel connection of wire jumper.
It is worth noting that, in the preparation method of above-mentioned photovoltaic module provided in this embodiment, the structure of main circuit and existing
There is main circuit structure in technology identical, mature main circuit structure can be continued to use, without being redesigned, has reached simplification and set
The beneficial effect of meter.In addition, not two parallel connections and tool only can be realized by connecting a wire jumper on the basis of main circuit structure
There is the design of the same diode of battery strings reverse parallel connection of public point, structure is simple, and technique is easily realized.
Technical solution provided in this embodiment by forming main circuit, and forms each first tie point in connection main circuit
With the wire jumper of corresponding second tie point, wherein wire jumper includes the first sub-portion and the second sub-portion interconnected, and passes through wire jumper
Different sub-portions are any the first battery strings group with public point and the second battery strings group reverse parallel connection same two
Pole pipe so that diode is only in parallel with a first battery strings group and a second battery strings group, compared to the prior art in it is every
A diode mode in parallel with two the first battery strings groups and two the second battery strings groups, the battery strings group of diodes in parallel
Quantity is reduced, and under the premise of guaranteeing that diode is not breakdown, the quantity of cell piece increases in each battery strings group, and then avoids
The problem of diode easily led to when increasing cell piece quantity in photovoltaic module is reversed breakdown appearance.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts, be combined with each other and substitutes without departing from protection scope of the present invention.Therefore, although by above embodiments to this
Invention is described in further detail, but the present invention is not limited to the above embodiments only, is not departing from present inventive concept
In the case of, it can also include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (18)
1. a kind of photovoltaic module, including at least one stacks of cells, which is characterized in that the stacks of cells includes in parallel connects
The first battery unit and the second battery unit connect；
First battery unit includes two the first battery strings groups being connected in series, and the first battery strings group includes at least one
A first battery strings, when the quantity of at least one first battery strings is greater than or equal to 2, first battery is series-parallel；
Second battery unit includes two the second battery strings groups being connected in series, and the second battery strings group includes at least one
A second battery strings, when the quantity of at least one second battery strings is greater than or equal to 2, second battery is series-parallel；
Battery strings in each battery strings group include the cell piece that quantity is equal and is connected in series；
In the same stacks of cells, the first tie point of two the first battery strings groups of the series connection is connected with described
By wire jumper electrical connection between second tie point of two the second battery strings groups of connection, the wire jumper includes interconnected the
One sub-portion and the second sub-portion, any the first battery strings group with public point and the second battery strings group pass through respectively
The different same diodes of sub-portion reverse parallel connection of the wire jumper；
Corresponding two diodes of each stacks of cells are set in same terminal box.
2. photovoltaic module according to claim 1, which is characterized in that the quantity of at least one stacks of cells is greater than
Or it is equal to 2, it connects between the adjacent stacks of cells.
3. photovoltaic module according to claim 1 or 2, which is characterized in that the cell piece is to be cut by full wafer cell piece
Made of half piece or one third piece cell piece.
4. photovoltaic module according to claim 1 or 2, which is characterized in that at least one described first battery strings and described
The quantity of at least one the second battery strings is 1 string or 3 strings.
5. photovoltaic module according to claim 1, which is characterized in that in first battery strings and second battery strings
The quantity of the cell piece is greater than or equal to 12.
6. photovoltaic module according to claim 1, which is characterized in that the cell piece in the photovoltaic module is in matrix
Arrangement, the wire jumper extend along the matrix column direction.
7. photovoltaic module according to claim 6, which is characterized in where the matrix in the vertical direction of plane, institute
It states wire jumper and the matrix part is overlapping, be at least provided with insulating layer between the wire jumper and the matrix in overlapping region.
8. photovoltaic module according to claim 7, which is characterized in that the insulating layer is reflective membrane.
9. photovoltaic module according to claim 7, which is characterized in that along the line direction of the matrix, the insulating layer
The difference of the width of width and the wire jumper is greater than or equal to 5mm.
10. photovoltaic module according to claim 7, which is characterized in that along the matrix column direction, the insulating layer
Length is greater than the length of the matrix, and is less than the distance between first tie point and second tie point.
11. photovoltaic module according to claim 7, which is characterized in that the adjacent cell piece passes through in the battery strings
Interconnecting strip electrical connection；In the vertical direction of the plane, the wire jumper and the interconnecting strip no overlap.
12. photovoltaic module according to claim 7, which is characterized in that the company of first sub-portion and second sub-portion
Contact is electrically connected L-type lead-out wire, and the first side and the wire jumper of the L-type lead-out wire be fitted and connected, and the of the L-type lead-out wire
Two sides are perpendicular to the plane；
Any the first battery strings group with public point and the second battery strings group pass through the wire jumper not respectively
With sub-portion and the same diode of L-type lead-out wire reverse parallel connection.
13. photovoltaic module according to claim 1, which is characterized in that the wire jumper includes center conductor and is wrapped in institute
State the peripheral insulating layers on the outside of center conductor.
14. photovoltaic module according to claim 1, which is characterized in that the Thickness range of the wire jumper be 0.05~
0.15mm, the width value range of the wire jumper are 1~5mm.
15. a kind of preparation method of photovoltaic module characterized by comprising
The main circuit of the photovoltaic module is formed, the main circuit includes at least one stacks of cells, the stacks of cells
Including the first battery unit and the second battery unit being connected in parallel；First battery unit includes be connected in series two the
One battery strings group, the first battery strings group include at least one first battery strings, the number of at least one first battery strings
When amount is greater than or equal to 2, the first battery strings group is in parallel；Second battery unit includes two second electricity being connected in series
Pond string group, the second battery strings group include at least one second battery strings, and the quantity of at least one second battery strings is big
When 2, second battery is series-parallel；Battery strings in each battery strings group include quantity it is equal and be connected in series
Cell piece；
At least one wire jumper is formed, the wire jumper is electrically connected two the first batteries of series connection described in the stacks of cells
Second tie point of two the second battery strings groups of the first tie point and series connection of string group；The wire jumper includes mutual
The first sub-portion and the second sub-portion of connection；
Multiple diodes are electrically connected with the main circuit and the wire jumper, each diode is and arbitrarily with public
The first battery strings group of endpoint and the second battery strings group pass through the different sub-portions of the corresponding wire jumper reversely simultaneously respectively
Connection, wherein corresponding two diodes of each stacks of cells are set in same terminal box.
16. preparation method according to claim 15, which is characterized in that the cell piece in the photovoltaic module is in square
Battle array arrangement, the wire jumper extend along the matrix column direction；Along the vertical direction of plane where the matrix, the wire jumper with
The matrix part is overlapping；
Before at least one wire jumper of the formation, further includes:
Insulating layer, overlapping region of the insulating layer at least formed on the wire jumper and the matrix are formed on the matrix.
17. preparation method according to claim 16, which is characterized in that it is described by multiple diodes and the main circuit with
And wire jumper electrical connection, each diode with any the first battery strings group with public point and described the
Two battery strings groups pass through the different sub-portion reverse parallel connections of the wire jumper respectively, comprising:
A L-type lead-out wire, the first side of the L-type lead-out wire and the jump are electrically connected in the tie point of the every wire jumper
Line is fitted and connected, and the second side of the L-type lead-out wire is perpendicular to the plane；
In stacks of cells the public point of any first battery strings group and the second battery strings group and corresponding second side it
Between connect a diode, any the first battery strings group with public point and the second battery strings group pass through institute respectively
State wire jumper different sub-portions and the same diode of L-type lead-out wire reverse parallel connection.
18. preparation method according to claim 15, which is characterized in that during the wire jumper includes center conductor and is wrapped in
Peripheral insulating layers on the outside of heart conducting wire；
Before at least one wire jumper of the formation, further includes:
Peripheral insulating layers are wrapped up, on the outside of center conductor to form the wire jumper.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882834.2A CN110473934A (en) | 2019-09-18 | 2019-09-18 | A kind of photovoltaic module and preparation method thereof |
| CN201911228965.5A CN112542527B (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module and preparation method thereof |
| CN201922150839.4U CN211480059U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN202211325284.2A CN115985988A (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201922150837.5U CN211480057U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201922154352.3U CN210926041U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201911228996.0A CN112531058B (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201911230077.7A CN112542528B (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201922150840.7U CN211480060U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
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| CN201910882834.2A CN110473934A (en) | 2019-09-18 | 2019-09-18 | A kind of photovoltaic module and preparation method thereof |
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| CN201911228996.0A Active CN112531058B (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201922150839.4U Active CN211480059U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201922154352.3U Active CN210926041U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201911230077.7A Active CN112542528B (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201922150840.7U Active CN211480060U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN202211325284.2A Pending CN115985988A (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201911228965.5A Active CN112542527B (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module and preparation method thereof |
| CN201922150837.5U Active CN211480057U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
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| CN201922150839.4U Active CN211480059U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201922154352.3U Active CN210926041U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201911230077.7A Active CN112542528B (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201922150840.7U Active CN211480060U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN202211325284.2A Pending CN115985988A (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
| CN201911228965.5A Active CN112542527B (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module and preparation method thereof |
| CN201922150837.5U Active CN211480057U (en) | 2019-09-18 | 2019-12-04 | Photovoltaic module |
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| CN115132877B (en) * | 2021-03-24 | 2024-03-22 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module, battery string and manufacturing method thereof |
| CN112803888B (en) * | 2021-04-14 | 2021-08-13 | 浙江晶科能源有限公司 | Photovoltaic module |
| CN215646721U (en) * | 2021-06-29 | 2022-01-25 | 泰州隆基乐叶光伏科技有限公司 | Photovoltaic module |
| CN115548154A (en) | 2021-06-30 | 2022-12-30 | 浙江晶科能源有限公司 | Photovoltaic module |
| AU2022235523B1 (en) | 2022-05-31 | 2023-11-16 | Jinko Solar (Haining) Co., Ltd. | Photovoltaic module |
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| US9059351B2 (en) * | 2008-11-04 | 2015-06-16 | Apollo Precision (Fujian) Limited | Integrated diode assemblies for photovoltaic modules |
| CN103311349A (en) * | 2012-03-15 | 2013-09-18 | 常熟阿特斯阳光力科技有限公司 | Solar cell assembly |
| CN202585481U (en) * | 2012-03-15 | 2012-12-05 | 常熟阿特斯阳光力科技有限公司 | Solar cell assembly |
| US10269998B2 (en) * | 2012-06-04 | 2019-04-23 | Sharp Kabushiki Kaisha | Solar battery module, and method of manufacturing solar battery module |
| US20140352773A1 (en) * | 2013-05-31 | 2014-12-04 | Neo Solar Power Corp. | Solar cell |
| GB2515837A (en) * | 2013-07-05 | 2015-01-07 | Rec Solar Pte Ltd | Solar cell assembly |
| US20160226438A1 (en) * | 2015-01-29 | 2016-08-04 | Solaria Corporation | Solar module with diode device for shading |
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| CN109962677A (en) * | 2017-12-14 | 2019-07-02 | 阿特斯阳光电力集团有限公司 | Photovoltaic module |
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2019
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| CN112531058B (en) | 2022-09-02 |
| CN211480057U (en) | 2020-09-11 |
| CN210926041U (en) | 2020-07-03 |
| CN112542528A (en) | 2021-03-23 |
| CN211480060U (en) | 2020-09-11 |
| CN112531058A (en) | 2021-03-19 |
| CN211480059U (en) | 2020-09-11 |
| CN115985988A (en) | 2023-04-18 |
| CN112542528B (en) | 2022-08-02 |
| CN112542527A (en) | 2021-03-23 |
| CN112542527B (en) | 2022-12-06 |
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Application publication date: 20191119 |