CN110212045A - Crystalline Silicon PV Module - Google Patents
Crystalline Silicon PV Module Download PDFInfo
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- CN110212045A CN110212045A CN201910385251.9A CN201910385251A CN110212045A CN 110212045 A CN110212045 A CN 110212045A CN 201910385251 A CN201910385251 A CN 201910385251A CN 110212045 A CN110212045 A CN 110212045A
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- 229910021419 crystalline silicon Inorganic materials 0.000 title claims abstract description 36
- 239000002313 adhesive film Substances 0.000 claims abstract description 15
- 238000004806 packaging method and process Methods 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims description 36
- 239000011888 foil Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 20
- 238000010248 power generation Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000009766 low-temperature sintering Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- BKUKXOMYGPYFJJ-UHFFFAOYSA-N 2-ethylsulfanyl-1h-benzimidazole;hydrobromide Chemical class Br.C1=CC=C2NC(SCC)=NC2=C1 BKUKXOMYGPYFJJ-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920006124 polyolefin elastomer Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000003466 welding Methods 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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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
- H01L31/044—PV modules or arrays of single PV cells including bypass diodes
- H01L31/0443—PV modules or arrays of single PV cells including bypass diodes comprising bypass diodes integrated or directly associated with the devices, e.g. bypass diodes integrated or formed in or on the same substrate as the photovoltaic cells
-
- 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
- H01L31/048—Encapsulation of modules
- H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
-
- 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
A kind of Crystalline Silicon PV Module, it is related to technical field of photovoltaic power generation, including front panel, first packaging adhesive film, battery connection group, second packaging adhesive film, backplate and terminal box, battery connection group includes M battery strings of bypass diode and series connection, M battery strings are arranged side by side into M row, M is even number, M >=2, battery strings include multiple cell piece groups being serially connected, cell piece group includes the cell piece of two panels or two panels more parallel, cell piece rectangular and trapezoidal shapes, cell piece parallel with one another is arranged along first direction in cell piece group, first direction is parallel to the extending direction of battery strings, second direction is perpendicular to first direction, when cell piece is trapezoidal, first direction is the extending direction of two parallel edges of cell piece.The Crystalline Silicon PV Module can be effectively reduced influence of the hot spot effect to Crystalline Silicon PV Module.
Description
Technical field
The present invention relates to technical field of photovoltaic power generation, in particular to a kind of Crystalline Silicon PV Module.
Background technique
For the sake of describing conveniently, following Crystalline Silicon PV Module abbreviation photovoltaic module；Battery or cell piece refer both to crystal
Silicon photrouics.
Photovoltaic module, it is in practical applications, every in same photovoltaic module in order to reach higher photoelectric conversion efficiency
One piece of cell piece all needs have similar characteristic.When certain cell piece output characteristics are poor, will lead to its internal resistance increase,
Power consumption increases, cell piece fever, power output reduction, reduces the photovoltaic module service life, and cell piece and light can be burnt when serious
Component is lied prostrate, here it is so-called hot spot effects.In general, the variation of this battery piece performance is caused since cell piece is blocked
, this block is when altitude of the sun is lower, grown by the adjacent photovoltaic component shade or floor vegetation in solar irradiation direction,
Or caused by the shades such as photovoltaic module contamination.Limitation and photovoltaic module due to photovoltaic system occupied area are cleaned not in time,
Such block often is difficult to avoid that.
The shape of cell piece is typically round or the planar centrals symmetric shape such as rectangular in the prior art, cell piece area compared with
Greatly, therefore a battery strings occupy biggish width in photovoltaic module, and every cell piece concentrates on shorter length
It is interior.
When using influence of the technical measures to reduce hot spot effect for installing bypass diode additional, incorporated by reference to referring to Fig.1 with
Fig. 2, such as: the photovoltaic module of 60 cell pieces, common by 6 string battery strings, the 10 cell piece series connection of every string are arranged in 6 column
The battery chip arrays of 10 rows, with a bypass diode inverse parallel after the series connection of every two battery strings, photovoltaic module one shares three
Bypass diode.When photovoltaic module works normally, bypass diode is in reverse-biased off state, non-conductive；When certain battery strings
In have cell piece occur hot spot effect when, corresponding bypass diode forward conduction, thus limitation be added in fail battery on piece
Backward voltage and the electric current for flowing through fail battery piece achieve the purpose that inhibit hot spot effect.But this anti-hot spot effect of mode
As a result unsatisfactory, there are the following problems:
(1) please with specific reference to Fig. 1, to mitigate the influence mutually blocked between photovoltaic module array, photovoltaic system is usually taken
The mode that photovoltaic module is transversely mounted, in this way when altitude of the sun is lower, when perhaps being blocked by floor vegetation or photovoltaic module
When the dirt on surface focuses on photovoltaic module lower part, the cell piece blocked concentrates on a battery strings of photovoltaic module bottom end.
Briefly, when the cell piece of the battery strings of photovoltaic module bottom end is blocked, and hot spot effect occurs, then photovoltaic module bottom end
Two battery strings are bypassed bypass diode, and the cell piece of entire photovoltaic module 1/3 is caused to be bypassed at this time, photovoltaic module it is defeated
Power decreases 1/3 out, this generating efficiency that will lead to entire photovoltaic module is greatly reduced；
(2) please with specific reference to Fig. 2, if by the way of longitudinally mounted, in this way when altitude of the sun is lower, or by ground
When face plant is blocked or when the dirt on photovoltaic module surface focuses on photovoltaic module lower part, the cell piece blocked is then distributed
In all battery strings.Briefly, battery strings all at this time may be bypassed bypass diode, and entire photovoltaic module will
Lose power output.
Summary of the invention
The purpose of the present invention is to provide a kind of Crystalline Silicon PV Modules, can be effectively reduced hot spot effect to crystalline silicon
The influence of photovoltaic module reduces the resistance loss of Crystalline Silicon PV Module, obtains higher generating efficiency.
The embodiment of the present invention is achieved in that
The embodiment of the present invention provides a kind of Crystalline Silicon PV Module, including the connection of front panel, the first packaging adhesive film, battery
Group, the second packaging adhesive film, backplate and terminal box；
The battery connection group includes bypass diode, and the battery connection group further includes M battery strings being connected in series,
M battery strings are arranged side by side into M row, and M is even number, M >=2；
The battery strings include multiple cell piece groups being serially connected, the cell piece group include two panels or two panels or more simultaneously
The cell piece of connection, cell piece parallel with one another is arranged along first direction in the cell piece group, and the cell piece group is in first party
Upward development length is greater than the development length of the cell piece group in a second direction；
The first direction is parallel to the extending direction of the battery strings, and the second direction is perpendicular to the first party
To；
The cell piece rectangular and trapezoidal shapes, when the cell piece is trapezoidal, the first direction is the cell piece
The extending direction of two parallel edges.
The Crystalline Silicon PV Module can be effectively reduced influence of the hot spot effect to Crystalline Silicon PV Module.
In preferred embodiments of the present invention, the electric current of the cell piece is preset an angular range along the second direction and is led
Out to connection conductor, the angular range is between 0 ° to 15 °.
In preferred embodiments of the present invention, the first electrode exit of the cell piece and the equal position of second electrode exit
In the back side of the cell piece, the battery connection group further includes the connection conductor positioned at the cell piece back side, the battery
The first electrode exit of piece is electrically connected with the connection conductor respectively with second electrode exit.
In preferred embodiments of the present invention, the first electrode exit and second electrode exit of the cell piece are common
Interdigitated is formed, the connection conductor is correspondingly arranged on interdigited electrode, the electrode leads to client of the cell piece and the connection
The interdigited electrode of conductor is electrically connected.
In preferred embodiments of the present invention, the first electrode exit and second electrode exit of the cell piece are distinguished
Positioned at the main light-receiving surface of the cell piece and the back side, the battery connection group further includes being located at the main light-receiving surface of the cell piece and back
The first electrode exit of the connection conductor in face, the cell piece is electrically connected with the connection conductor respectively with second electrode exit
It connects.
In preferred embodiments of the present invention, the connection conductor is flexible circuit board or metal foil.
The beneficial effect of the embodiment of the present invention includes:
Crystalline Silicon PV Module provided by the present invention, since each of battery connection group cell piece group is arranged to
More than two panels or two panels cell piece parallel with one another, cell piece parallel with one another is arranged along first direction in cell piece group.
First, bypass diode is in reverse-biased off state, Crystalline Silicon PV Module when Crystalline Silicon PV Module works normally
Power normally exports；When due to blocking, such as due to the blocking of front-seat Crystalline Silicon PV Module in Crystalline Silicon PV Module array,
It is only most lower in the case where Crystalline Silicon PV Module is laterally disposed when situations such as dirt blocks, growing plants is blocked occurs
Hot spot effect occurs for the battery strings of a string of face or a few strings, and corresponding bypass diode conducting, bypasses this string or several strings are sent out
The battery strings of raw hot spot effect, since battery strings one share M string, if the bypass two in parallel of the series connection group of every two strings battery strings
If pole pipe, the accounting of Crystalline Silicon PV Module actual power loss is 2/M.Due under same output power, the present invention
M it is bigger than the M of the prior art, so actual power loss accounting be less than the prior art；In the case where equally blocking,
If Crystalline Silicon PV Module be it is placed longitudinally, there is cell piece to be blocked in all battery strings, due to each in cell piece group
The parallel relationship of cell piece, each group in parallel is elongated shape, then hot spot has only blocked the one small of each cell piece group
Part, therefore the electric current output of Crystalline Silicon PV Module is only limited, entire Crystalline Silicon PV Module still keeps certain function
Rate output；Since the distinctive series-parallel design principle of the present invention can make to be bypassed in the case where identical hot spot effect occurs
Cell piece quantity reduce, so as to be effectively reduced influence of the hot spot effect to Crystalline Silicon PV Module, therefore the crystal
Silicon photovoltaic module can be effectively reduced influence of the hot spot effect to Crystalline Silicon PV Module.Second, the present invention is due to using multi-disc
Then concatenated technical measures after cell piece is in parallel, so in the case where identical Crystalline Silicon PV Module exports electric current, it is single
Block cell piece area is smaller, therefore the mechanical strength of cell piece is higher, and cell piece stress is small, is conducive to improve crystalline silicon photovoltaic group
The reliability of part；Simultaneously because cell piece area is small, battery can be manufactured using relatively thin silicon wafer, not only improve reduction silicon materials
Consumption, and help to improve the photoelectric conversion efficiency of Crystalline Silicon PV Module.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the schematic diagram that photovoltaic module long side is blocked in the prior art；
Fig. 2 is the schematic diagram that photovoltaic module short side is blocked in the prior art；
Fig. 3 is the plane figure schematic diagram of photovoltaic module provided in an embodiment of the present invention；
Fig. 4 is the electrical schematic diagram of battery connection group provided in an embodiment of the present invention；
Fig. 5 is one of the structural schematic diagram of photovoltaic module provided in an embodiment of the present invention；
Fig. 6 is the second structural representation of photovoltaic module provided in an embodiment of the present invention；
Fig. 7 is one of the structural schematic diagram of cell piece provided in Fig. 5, Fig. 6；
Fig. 8 is the third structural representation of photovoltaic module provided in an embodiment of the present invention；
Fig. 9 is the second structural representation of the cell piece provided in Fig. 8.
Icon: 100- battery connection group；110- battery strings；112- cell piece group；114- cell piece；116- first electrode is drawn
Outlet；118- second electrode exit；120- bypass diode；130- connection conductor；140- insulating layer；200- photovoltaic module；
210- front panel；220- backplate；The first packaging adhesive film of 230-；The second packaging adhesive film of 240-；250- terminal box.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component parts of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or position of the instructions such as "horizontal", "inner", "outside", " vertical ", " length direction ", " width direction ", " transverse direction ", " longitudinal direction "
Relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when the orientation or position usually put
Relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " the
One ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In addition, the terms such as " transverse direction ", " longitudinal direction ", "horizontal", "vertical", " vertical ", " length direction ", " width direction " are simultaneously
It does not indicate to require component abswolute level or pendency, but can be slightly tilted.As " length direction " and " width direction " is only
It is not to indicate that both structures are had to completely vertically, but can be slightly tilted and even be bent for referring to its relative direction.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Incorporated by reference to referring to Fig. 3 to Fig. 5, a kind of Crystalline Silicon PV Module is present embodiments provided, for the sake of describing conveniently,
Following Crystalline Silicon PV Module abbreviation photovoltaic module 200.The photovoltaic module 200 include front panel 210, the first packaging adhesive film 230,
Battery connection group 100, the second packaging adhesive film 240, backplate 220 and terminal box 250；
Wherein, battery connection group 100 includes bypass diode 120, further includes the M battery strings 110 being connected in series, and M is a
Battery strings 110 are arranged side by side into M row, and M is even number, M >=2；
Wherein, battery strings 110 include multiple cell piece groups 112 being serially connected, and cell piece group 112 includes two panels or two panels
The above cell piece 114 parallel with one another, cell piece 114 parallel with one another is arranged along first direction in cell piece group 112, cell piece
The development length of group 112 in a first direction is greater than the development length of cell piece group 112 in a second direction；Wherein, first party
To the extending direction for being parallel to battery strings 110, second direction is perpendicular to first direction；
114 rectangular and trapezoidal shapes of cell piece, when cell piece 114 is trapezoidal, first direction is 114 liang of parallel edges of cell piece
Extending direction.
It should be understood that
First, photovoltaic module 200 is stacked by sequence arranged below, front panel 210, the first packaging adhesive film 230, battery
Connection group 100, the second packaging adhesive film 240 and backplate 220.Each layer being stacked is through hot pressing forming layer casting die, from lamination
Part draws lead-out wire, then completes encapsulation process after installing the frame of terminal box 250 and photovoltaic module 200 additional.
It should be understood that front panel 210 is light-permeable material.The main light-receiving surface of the cell piece 114 of battery connection group 100 is directed towards
What front panel 210 was arranged, in order to better light.Backplate 220 is transparent material or light-proof material, battery connection group
The back side of 100 cell piece 114 or secondary light-receiving surface are directed towards the setting of backplate 220, in order to preferably receive and utilize light
According to.
The series connection group and bypass diode 120 that second, the n-th row and n+1 row's battery strings 110 are formed form inverse parallel.Wherein,
N is odd number, M-1 >=n >=1.
Third, the battery connection group 100 include M battery strings 110, and M battery strings 110 are arranged in M is arranged side by side into, battery
It is serially connected between string 110, forms battery connection group 100.
4th, cell piece group 112 includes two panels or two panels or more cell piece 114 parallel with one another, exemplary, can be phase
Mutually two cell pieces 114, three, 114, five cell pieces 114 of cell piece of cell piece 114, four etc. in parallel.In the present embodiment
It is to keep cell piece group 112 enough that cell piece group 112, which is arranged to two panels or two panels or more cell piece 114 parallel with one another,
It is long, entire battery strings 110 are avoided in the case where partial occlusion to reduce the influence that local shades are blocked to cell piece group 112
Or even entire battery connection group 100 loses power output.
5th, the shape size of battery connection group 100 is with no restrictions.In the present embodiment, cell piece 114 can be in square
Shape is included in addition chamfering, oblique angle, camber line on the basis of rectangle, is also possible to trapezoidal and is added on the basis of trapezoidal
Angle, oblique angle, camber line.The development length of cell piece group 112 in a first direction is greater than the prolonging in a second direction of cell piece group 112
Elongation, cell piece 114 parallel with one another is arranged along first direction in cell piece group 112.Wherein, first direction is parallel to battery
The extending direction of string 110, second direction is perpendicular to first direction.When cell piece 114 is trapezoidal, first direction is two parallel edges
Extending direction.Specifically, the parallel form of cell piece 114 parallel with one another in the cell piece group 112 can be found in shown in Fig. 4.
Also, it is to be understood that in battery strings 110 number of cell piece group 112 identical can be also possible to it is different.
To sum up, battery connection group 100 of the invention due to each cell piece group 112 be arranged to two panels or two panels with
Upper cell piece 114 parallel with one another, cell piece 114 parallel with one another is arranged along first direction in cell piece group 112.First,
When photovoltaic module 200 works normally, bypass diode 120 is in reverse-biased off state, and 200 power of photovoltaic module is normal
Output；When due to blocking, such as due to the blocking of front-seat photovoltaic module 200 in 200 array of photovoltaic module, dirt blocks, grows
Plant situations such as blocking when occurring, in the case where photovoltaic module 200 is laterally disposed, only nethermost a string or a few strings
Hot spot effect occurs in battery strings 110, corresponding bypass diode 120 is connected, and bypasses this string or hot spot effect occurs for a few strings
The battery strings 110 answered, since the shared M of battery strings 110 1 goes here and there, if every two strings battery strings 110 bypass diode 120 in parallel
If, the accounting of 200 actual power of photovoltaic module loss is 2/M.Since under same output power, M ratio of the invention is existing
There is the M of technology big, so the accounting of actual power loss is less than the prior art；Under some circumstances, if photovoltaic module 200 is
It is placed longitudinally, there is percentage of batteries piece 114 to be blocked in all battery strings 110, due to each cell piece in cell piece group 112
114 parallel relationship, then hot spot only limits the electric current output of photovoltaic module 200, and entire photovoltaic module 200 still keeps certain
Power output.Since the distinctive series-parallel design principle of the present invention can make other in the case where identical hot spot effect occurs
The quantity for the cell piece 114 that road is fallen is reduced, so as to be effectively reduced influence of the hot spot effect to photovoltaic module 200, therefore should
Photovoltaic module 200 can be effectively reduced influence of the hot spot effect to photovoltaic module 200.Second, the present invention is due to using multi-disc electricity
114 parallel connection of pond piece and then concatenated technical measures, so in the case where identical photovoltaic module 200 exports electric current, cell piece
114 areas are smaller, therefore the mechanical strength of cell piece 114 is higher, and the stress of photovoltaic module 200 is small, and the probability that sliver occurs is low,
Be conducive to improve the reliability of photovoltaic module 200；Simultaneously because 114 area of cell piece is small, can be manufactured using relatively thin silicon wafer
Battery, not only improving reduces silicon materials consumption, and helps to improve the photoelectric conversion efficiency of photovoltaic module 200.
It should be understood that the various influences of corresponding generation are only limited to cell piece group 112 when hot spot effect occurs under above situation
Two panels or two panels more than cell piece 114 parallel with one another along position arranged in parallel shown in Fig. 4 when, can just generate above-mentioned influence.
Since the above-mentioned mode that is arranged in parallel is preferably selection, above-mentioned parallel way is used in the present embodiment.
In the present embodiment, the electric current of cell piece 114 is preset an angular range in a second direction and is exported to connection conductor
130, angular range is between 0 ° to 15 °.It should be understood that connection conductor 130 is not belonging to the structure of cell piece 114, it is for electricity
The conductor that interconnection or cell piece 114 and bypass diode 120 interconnect between pond piece 114.
Please in conjunction with referring to Fig. 5, Fig. 6 and Fig. 7, the first electrode exit 116 and second electrode exit of cell piece 114
118 are respectively positioned on the back side of cell piece 114, and battery connection group 100 further includes the connection conductor 130 positioned at 114 back side of cell piece, electricity
The first electrode exit 116 of pond piece 114 and second electrode exit 118 respectively with connect conductor 130 and be electrically connected.
It is exemplary, please in conjunction with referring to Fig. 9, the first electrode exit 116 and second electrode exit of cell piece 114
118 are collectively formed interdigitated, and connection conductor 130 is correspondingly arranged on interdigited electrode, the electrode leads to client of cell piece 114 and connection
The interdigited electrode of conductor 130 is electrically connected.
It should be noted that first, first electrode exit 116 and second electrode exit 118 are positive and negative electrode extraction
End, in the present embodiment, first electrode exit 116 then can be for positive exit, corresponding second electrode exit 118
Cathode exit；First electrode exit 116 or cathode exit, corresponding second electrode exit 118 is then at this time
For positive exit.
Second, connection conductor 130 can be flexible circuit board, be also possible to metal foil conductor, the electrode of cell piece 114 draws
It can be connected to by welding or low-temperature sintering electrocondution slurry between outlet and connection conductor 130.
It is exemplary, it is equipped with insulating layer 140 between cell piece 114 and connection conductor 130, the first electrode of cell piece 114 is drawn
Outlet 116 is electrically connected by the via hole on insulating layer 140 with conductor 130 is connect respectively with second electrode exit 118.
It should be noted that insulating layer 140 is provided between cell piece 114 and connection conductor 130, conductor 130 is connected
It can be metal foil conductor, the parallel connection of battery is connected all by realizing with the metal foil conductor at 114 back side of cell piece, cell piece
114 surfaces are equipped with dotted first electrode exit 116 and second electrode exit 118, in the present embodiment, dotted first
Electrode leads to client 116 and second electrode exit 118 respectively with connect between conductor 130 formed by low-temperature sintering electrocondution slurry it is logical
Road.
Please in conjunction with reference Fig. 8, the first electrode exit 116 and second electrode exit 118 of cell piece 114 distinguish position
In the main light-receiving surface of cell piece 114 and the back side, battery connection group 100 further include be located at the main light-receiving surface of cell piece 114 with
The connection conductor 130 at the back side, first electrode exit 116 and the second electrode exit 118 of cell piece 114 are led with connection respectively
Body 130 is electrically connected.
It should be noted that position of the embodiment of the present invention to first electrode exit 116 and second electrode exit 118
It is not particularly limited, as long as can guarantee normal series-parallel connection relationship.Exemplary, first electrode exit 116 can
It is set as positive electrode exit or negative electrode exit, then second electrode exit 118 will be correspondingly arranged the electrode leads to client that is negative
Or positive electrode exit.
Optionally, connection conductor 130 can be metal foil or flexible circuit board.First electrode exit 116 and the second electricity
Pole exit 118 is provided projectingly on cell piece 114, so, electrical connection can be established by metal foil, and can root
According to the area and thickness for needing flexible setting metal foil, to meet corresponding current-carrying requirement, the safety of electrical connection and steady is improved
It is qualitative.
In addition, in the present embodiment, the first packaging adhesive film 230 and the second packaging adhesive film 240 all can be EVA adhesive films
(Ethylene Vinyl Acetate, Chinese name: polyethylene-polyvinyl acetate copolymer) or POE glue film
Any one in (Polyolefin Elastomer, Chinese name: ethylene-octene copolymer).Which kind of specifically sealed using
Fill glue film, those skilled in the art can according to the actual situation depending on, in the present embodiment with no restrictions.
In the present embodiment, after connecting between n-th row's battery strings 110 and (n+1)th row's battery strings 110 with bypass diode
120 inverse parallels, the bypass diode 120 can be PN junction diode or Schottky diode, and those skilled in the art can basis
Depending on actual conditions, in the present embodiment with no restrictions.
The foregoing is merely alternative embodiments of the invention, are not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of Crystalline Silicon PV Module, including front panel, the first packaging adhesive film, battery connection group, the second packaging adhesive film, the back side
Plate and terminal box, which is characterized in that the battery connection group includes bypass diode, and the battery connection group further includes series connection
M battery strings of connection, the M battery strings are arranged side by side into M row, and M is even number, and M >=2, the battery strings include multiple phases
Mutual concatenated cell piece group, the cell piece group includes the cell piece of two panels or two panels more parallel, phase in the cell piece group
Mutually cell piece in parallel is arranged along first direction, and the development length of the cell piece group in a first direction is greater than the cell piece
The development length of group in a second direction, the first direction are parallel to the extending direction of the battery strings, the second direction
Perpendicular to the first direction, the cell piece rectangular and trapezoidal shapes, when the cell piece is trapezoidal, the first direction is
The extending direction of two parallel edges of cell piece.
2. Crystalline Silicon PV Module according to claim 1, which is characterized in that the electric current of the cell piece is along described second
Direction is preset an angular range and is exported to connection conductor, and the angular range is between 0 ° to 15 °.
3. Crystalline Silicon PV Module according to claim 1, which is characterized in that the first electrode exit of the cell piece
The back side of the cell piece is respectively positioned on second electrode exit, the battery connection group further includes being located at the cell piece back side
Connection conductor, the first electrode exit of the cell piece is electrically connected with the connection conductor respectively with second electrode exit
It connects.
4. Crystalline Silicon PV Module according to claim 3, which is characterized in that the first electrode exit of the cell piece
Interdigitated is collectively formed with second electrode exit, the connection conductor is correspondingly arranged on interdigited electrode, the cell piece
Electrode leads to client is electrically connected with the interdigited electrode of the connection conductor.
5. Crystalline Silicon PV Module according to claim 1, which is characterized in that the first electrode exit of the cell piece
Main light-receiving surface and the back side of the cell piece are located at second electrode exit, the battery connection group further includes being located at institute
State the connection conductor at the main light-receiving surface of cell piece and the back side, the first electrode exit and second electrode exit point of the cell piece
It is not electrically connected with the connection conductor.
6. Crystalline Silicon PV Module according to claim 4, which is characterized in that the connection conductor be flexible circuit board or
Metal foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910385251.9A CN110212045A (en) | 2019-05-09 | 2019-05-09 | Crystalline Silicon PV Module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910385251.9A CN110212045A (en) | 2019-05-09 | 2019-05-09 | Crystalline Silicon PV Module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110212045A true CN110212045A (en) | 2019-09-06 |
Family
ID=67785778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910385251.9A Withdrawn CN110212045A (en) | 2019-05-09 | 2019-05-09 | Crystalline Silicon PV Module |
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| Country | Link |
|---|---|
| CN (1) | CN110212045A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023036288A1 (en) * | 2021-09-13 | 2023-03-16 | 中能创光电科技(常州)有限公司 | Flexible photovoltaic cell assembly and manufacturing method therefor |
-
2019
- 2019-05-09 CN CN201910385251.9A patent/CN110212045A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023036288A1 (en) * | 2021-09-13 | 2023-03-16 | 中能创光电科技(常州)有限公司 | Flexible photovoltaic cell assembly and manufacturing method therefor |
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