CN110190146A - Solar battery string group and solar cell module - Google Patents
Solar battery string group and solar cell module Download PDFInfo
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- CN110190146A CN110190146A CN201910603841.4A CN201910603841A CN110190146A CN 110190146 A CN110190146 A CN 110190146A CN 201910603841 A CN201910603841 A CN 201910603841A CN 110190146 A CN110190146 A CN 110190146A
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- 239000004020 conductor Substances 0.000 claims description 15
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- 239000000463 material Substances 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
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- 229920000098 polyolefin Polymers 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
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Classifications
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The present invention provides a kind of solar battery string group and solar cell module, the solar battery string group includes: multiple solar battery strings, each solar battery string is connected by adjacent two column solar battery cell to be formed, and each column includes multiple solar battery cells；Busbar, the busbar be arranged in go here and there more the solar battery string both side ends will be serially connected between multiple solar battery strings；Multiple embedded by-pass switches, the number of the embedded by-pass switch is identical as the number of the solar battery string, and multiple embedded by-pass switches are overlapped in the busbar and are located at the middle position of two column of each solar battery string respectively to form bypass.
Description
Technical field
The present invention relates to solar energy generation technology field, it is related to a kind of solar battery string group and solar cell module.
Background technique
In solar cell module, lead to " hot spot effect " very in order to avoid cell piece is heated continuously under high current
To component is burnt out, bypass diode is generallyd use.When solar cell module is not blocked by shadow, the battery under sunlight irradiation
Piece normal power generation, bypass diode is in reverse blocking state at this time, and electric current does not pass through from diode；When percentage of batteries piece is negative
When shadow blocks, the cell piece that is blocked is in resistance characteristic, and forward voltage drop, diode current flow, part light occur in bypass diode both ends
Raw electric current passes through from diode, plays the role of electic protection.
Under normal conditions, bypass diode using Schottky diode and is encapsulated into inside solar junction box, however
Schottky diode junction temperature is high, and the sufficiently wide great talent that solar junction box is commonly designed is able to satisfy its cooling requirements, causes more
Material loss.In addition, Schottky diode antistatic effect is weak, and in terminal box production and installation process, environmental factor or anti-
Electrostatic improper measures be easy to cause Schottky diode electrostatic breakdown.Further, in cell piece components design, in order to make
Bypass diode and component cell piece in terminal box is series-parallel, needs to consume more solar energy busbar and insulating materials.
Summary of the invention
In view of this, the purpose of the present invention is to provide it is a kind of facilitate reduce solar cell module overall dimensions,
Facilitate the solar battery string group of damage caused by reducing because of the excessively high encapsulating material solar components of diode temperature.
The object of the invention is also to provide a kind of solar cell modules with above-mentioned solar battery string group.
In order to solve the above technical problems, the invention adopts the following technical scheme:
The solar battery string group of embodiment according to a first aspect of the present invention, comprising:
Multiple solar battery strings, each solar battery string is by adjacent two column solar battery cell series connection shape
At each column includes multiple solar battery cells；
Busbar, the busbar be arranged in go here and there more the solar battery string a side end with by multiple sun
It can mutually contact between battery strings；
Multiple embedded by-pass switches, the number phase of the number of the embedded by-pass switch and the solar battery string
Together, multiple embedded by-pass switches are overlapped in the busbar respectively and are located at each solar battery string
Two column middle positions at formed bypass.
Optionally, the embedded by-pass switch is MOS integrated circuit by-pass switch.
Preferably, the solar battery string group includes the three string solar battery strings, and the solar battery string
Group includes three embedded by-pass switches.
Optionally, DFN encapsulating structure is used between the embedded by-pass switch and the busbar.
Optionally, each solar energy string is connected in series by multiple half batteries, and multiple solar battery strings exist
Two rows are lined up on length direction, the busbar of two rows of solar battery strings is disposed adjacent.
The solar cell module of embodiment according to a second aspect of the present invention, be successively superimposed under upper photovoltaic glass,
Solar battery string group described in any of the above embodiments, backboard, the solar cell module further includes two terminal boxes, two institutes
The both sides of the edge that terminal box is separately positioned on the long side of the backboard are stated, the busbar, which is each passed through, is formed in the backboard
Through-hole is connected with the corresponding terminal box.
Optionally, the solar cell module further include: multiple cushion blocks, multiple cushion blocks are glue film cushion block or insulation
Cushion block, multiple cushion blocks are arranged in correspondingly respectively at the multiple embedded by-pass switch.
Optionally, the long side keeping parallelism of the long side of the terminal box and the solar cell module.
Optionally, the terminal box includes:
Box body is formed with chamber in the box body；
Box cover, the box cover are matched with the box body with the closed chamber；
Metallic conductor, the metallic conductor are arranged in the chamber, and confluence is formed on the metallic conductor
Limit hole, the busbar pass through the busbar limit hole and are connected with the metallic conductor；
Conducting wire, the conducting wire are connected with by power output to power circuit with the metallic conductor,
Wherein, the busbar limit hole extends along the longitudinal direction of the solar cell module.
Optionally, the solar cell module further includes frame bracket, and the frame is set in the photovoltaic glass, the sun
The outside of energy battery strings group and backboard.
Preferably, the frame is insulating frame, and the box body and the frame of the terminal box are integrally formed, described
Be formed with busbar perforation on frame, terminal box setting on said frame, the busbar from the backboard with it is described
It is pierced by between photovoltaic glass and passes through busbar perforation and be connected with the terminal box.
When the solar battery string is connected in series by multiple half batteries, correspondingly, the terminal box is located at described
The middle position of the long side both sides of the edge of solar cell module.
Above-mentioned technical proposal of the invention at least has the following beneficial effects:
1, solar battery string group according to an embodiment of the present invention, is sealed using by-pass switch by the way of component internal,
Facilitate the consumption of reduction solar components overall package material when assembling solar components using it；
2, for the component for using Split type connecting box, since by-pass switch insertion being arranged in busbar
In, without halfway junction box is arranged, therefore the quantity of Split type connecting box can be reduced to two from three, be more advantageous to
Save the machining period of Material Cost and component；
3, due to reducing halfway junction box, and terminal box only needs to consider to connect busbar, therefore effectively reduces back
The opening size of plate and the number of openings of back glass improve the insulation voltage endurance capability of solar components；
4, due to effectively reducing the opening size of backboard and the number of openings of back glass, be conducive to improve solar energy group
The mechanical load capability of part.
Detailed description of the invention
Fig. 1 is the explosive view of the solar cell module of the embodiment of the present invention；
Fig. 2 is the partial schematic diagram according to the solar energy string group of the embodiment of the present invention；
Fig. 3 is the position view for illustrating the terminal box in solar cell module according to an embodiment of the present invention；
Fig. 4 is the explosive view according to the terminal box in the solar cell module of the embodiment of the present invention；
Fig. 5 is the explosive view according to the solar cell module of another embodiment of the present invention；
Fig. 6 is for illustrating that the position of the terminal box in solar cell module according to another embodiment of the present invention is illustrated
Figure；
Fig. 7 a is the structural schematic diagram of terminal box and aluminium frame bracket in solar cell module shown in fig. 6；
Fig. 7 b is the structural schematic diagram at the reverse side visual angle of terminal box shown in Fig. 7 a and aluminium frame bracket.
Specific embodiment
Solar cell module 100 according to an embodiment of the present invention is specifically described in conjunction with attached drawing first below.
As shown in Figure 1, solar cell module 100 according to an embodiment of the present invention, (described herein from upper from top to bottom
It is to irradiate for direction of advance according to light under, that is to say, that light incident surface is top.Specifically, being located at the right side in Fig. 1
Downside is top, and upper left side is top) successively it is superimposed with photovoltaic glass 7, the solar battery string group, backboard 6.Too
Positive energy battery component 100 further includes two terminal boxes 8, and two terminal boxes 8 are separately positioned on the both sides of the edge of the long side of backboard 6,
Busbar 1, which is each passed through, to be formed in the through-hole of backboard 6 and is connected with corresponding terminal box 8.
As depicted in figs. 1 and 2, solar battery string group according to an embodiment of the present invention, comprising: multiple solar batteries
String, busbar 1 and multiple embedded by-pass switches 2.
Wherein, each solar battery string is formed by the series connection of adjacent two column solar battery cell 3, and each column includes more
A solar battery cell 3.Solar battery string group in solar cell module 100 shown in fig. 1 has 6 column too
Positive energy battery unit 3, that is to say, that bunchiness shares 3 solar battery strings two-by-two, and each column are formed with 10 solar batteries
Unit 3.
Busbar 1 be arranged in go here and there more the solar battery string both side ends (upper end in Fig. 1, but the present invention it is unlimited
In this) will mutually contact between multiple solar battery strings.
The number of embedded by-pass switch 2 is identical as the number of the solar battery string, multiple embedded by-pass switches 2
It is overlapped in busbar 1 respectively, and each embedded by-pass switch 2 is located at two column of each solar battery string
Middle position (as shown in Figure 2) is to form bypass.
In some embodiments of the invention, as shown in Figure 1, the solar battery string group includes the three string solar energy
Battery strings, correspondingly, the solar battery string group include three embedded by-pass switches 2.
Preferably, which is the bypass of MOS (Metal-Oxide-Semiconductor) integrated circuit
Switch.
As embedded by-pass switch 2, MOS integrated circuit by-pass switch is consistent with traditional bypass diode application principle,
I.e. when solar cell module is blocked by shadow, battery strings where bypassing the cell piece that is blocked play protection solar battery
The effect of component.But different, MOS integrated circuit by-pass switch inside solar junction box is acted on from traditional bypass diode
Because thickness is small, contact laminating is into solar battery sheet component internal.The MOS integrated circuit by-pass switch is by charge pump, ginseng
Examine comparator, MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) driving circuit, ring
The circuits such as shape oscillator, capacitor composition, its main feature is that junction temperature is low, small power consumption.
The working principle of the MOS integrated circuit by-pass switch are as follows: when solar components work normally, metal-oxide-semiconductor is disconnected,
Parasitic diode on metal-oxide-semiconductor does not have electric current to pass through；It is blocked if being generated on component, the voltage generated between battery strings is reverse-biased, photoproduction
Electric current passes through from parasitic diode, and the forward bias of diode pumps activating charge at this time, gives capacitor charging；Work as capacitance voltage
It increases to when presetting high level, charge pump stops working, while metal-oxide-semiconductor controller is led using the controlling electric energy metal-oxide-semiconductor of capacitor
It is logical, at this point, component photogenerated current by some by the source electrode of metal-oxide-semiconductor to drain electrode, play the role of protection and block cell piece；
When the voltage drop of capacitor is as low as low value is preset, metal-oxide-semiconductor controller disconnects metal-oxide-semiconductor, and parasitic diode gives electricity again at this time
Capacity charge circuits sequentially down until blocking disappearance.
Preferably, MOS integrated circuit by-pass switch uses traditional DFN (Double Flat No-lead, dual flat
Leadless packages) encapsulating structure be packaged together with busbar 1, the encapsulating structure is by epoxy resin layer, conductive basal disc, conduction
Pad is constituted.The drain electrode of conductive basal disc and MOSFET connect, and the grid of MOSFET is connect with conductive welding disk, to meet positive guide
It is logical, the requirement reversely ended.The integral thickness of the packaged type can control within 1mm, and conventional single glass component package material
Overall thickness is 0.7-0.8mm, solar double-glass assemblies encapsulating material (EVA adhesive film or PO glue film) after expecting (EVA adhesive film) and battery strings lamination
And overall thickness is 1mm after battery strings lamination, wherein EVA adhesive film is polyethylene-polyvinyl acetate copolymer abbreviation, PO
(polyolefin) glue film is polyolefin adhesive film.So can be encapsulated into inside photovoltaic module.
It, can also be in the two sides of solar battery string group in solar cell module 100 according to an embodiment of the present invention
Packaging adhesive film 4, such as EVA adhesive film or PO glue film is respectively set in surface.
Further, cause between component backboard and glass that there are stress collection to prevent at by-pass switch 2 EVA thickness partially thin
In, there are abrasion or the quick-fried glass of pressure to component backboard, as shown in Fig. 2, solar cell module 100 can also include multiple cushion blocks
17, multiple cushion blocks 17 are cross-over block (specifically, such as can be EVA adhesive film cushion block or PO glue film cushion block), multiple cushion blocks 17
It is arranged in correspondingly 2 at multiple embedded by-pass switches respectively.
Preferably, as shown in figure 3, the long side keeping parallelism of the long side of terminal box 8 and solar cell module 100, this has
Help reduce the dosage of cable 13.
As shown in figure 4, the design of terminal box 8 of the invention using none-disk terminal diode, terminal box 8 includes: box body 12, box
Lid 15, metallic conductor 11, conducting wire 13.
Chamber is formed in box body 12.Box cover 15 is matched with box body 12 with the closed chamber.Wherein, box cover 15 is preferred
Using embedded design, the size of terminal box 8 is favorably controlled.
Metallic conductor 11 is arranged in the chamber, and busbar limit hole 16 is formed on metallic conductor 11.In group
When filling solar cell module 100, busbar 1 passes through busbar limit hole 16 and is connected with metallic conductor 11.Conducting wire 13 and gold
Belong to electric conductor 11 to be connected with by power output to power circuit.
According to the present invention, none-disk terminal diode in terminal box 8 can make it omit the physical space of bypass diode and dissipate
Heat space, terminal box 8 can be done smaller under the premise of meeting creepage distance.This can also directly reduce the whole of photovoltaic module
Body size.
As shown in figure 4, busbar limit hole 16 extends along the longitudinal direction of solar cell module 100.In Fig. 1, by
It is consistent with 100 direction of solar cell module in the length direction of terminal box 8, it may also be said to, busbar limit hole 16 is along connecing
The length direction of wire box 8 extends.In the case, be conducive to terminal box 8 further to reduce under the premise of meeting creepage distance
Size.
As shown in Figure 1, solar cell module 100 can also include frame 10, frame 10 can be aluminium chassis, frame 10
It is set in the outside of photovoltaic glass 7, solar battery string group and backboard 6.
In some embodiments, frame 10 can be insulating frame, and the box body 12 and frame 10 of terminal box 8 are integrally formed.
As shown in Fig. 6-Fig. 7 b, could be formed on frame 10 busbar perforation 20, terminal box 8 ' can be set on frame 10, into
When row assembling, busbar 1 can be pierced by between backboard 6 and photovoltaic glass 7 and pass through busbar perforation 20 and 8 phase of terminal box
Even.Thereby, it is possible to further decrease the opening size of backboard 6.
The design of solar battery string group according to an embodiment of the present invention, embedded by-pass switch 2 can be applied to half
In solar cell module type.As shown in figure 5, each solar energy string is connected in series by multiple half batteries, Duo Gesuo
It states solar battery string and lines up two rows in the longitudinal direction, the busbar 1 of two rows of solar battery strings is disposed adjacent.Also
It is to say, as shown in figure 5, the busbar 1 is located at the middle position of two rows of solar battery strings, correspondingly, terminal box 8 is located at
The middle position of the long side both sides of the edge of solar cell module.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of solar battery string group characterized by comprising
Multiple solar battery strings, each solar battery string are formed by the series connection of adjacent two column solar battery cell (3),
Each column includes multiple solar battery cells (3)；
Busbar (1), the busbar (1) be arranged in go here and there more the solar battery string both side ends with will it is multiple it is described too
It is positive to be serially connected between battery strings；
Multiple embedded by-pass switches (2), the number of the embedded by-pass switch (2) and the number of the solar battery string
Identical, multiple embedded by-pass switches (2) are overlapped in the busbar (1) respectively and are located at each sun
It can be bypassed at two middle positions arranged of battery strings with being formed.
2. solar battery string group according to claim 1, which is characterized in that the embedded by-pass switch (2) is MOS
Integrated circuit by-pass switch.
3. solar battery string group according to claim 1, which is characterized in that the embedded by-pass switch (2) and institute
It states between busbar (1) using DFN encapsulating structure.
4. solar battery string group according to claim 1, which is characterized in that each solar energy string is by multiple half
Battery is connected in series, and multiple solar battery strings line up two rows in the longitudinal direction, two rows of solar battery strings
Busbar (1) is disposed adjacent.
5. a kind of solar cell module, which is characterized in that the solar cell module is successively superimposed with photovoltaic from top to bottom
The described in any item solar battery string groups of glass (7), such as Claims 1-4, backboard (6), the solar cell module is also
Including two terminal boxes (8), two terminal boxes (8) are separately positioned on the both sides of the edge of the long side of the backboard (6), are located at
The busbar (1) of two of the module edge, which is each passed through, to be formed in the through-hole of the backboard (6) and described connects with corresponding
Wire box (8) is connected.
6. solar cell module according to claim 5, which is characterized in that the solar cell module further include:
Multiple cushion blocks (17), multiple cushion blocks (17) are glue film cushion block or cross-over block, and multiple cushion blocks (17) difference one are a pair of
It is arranged in answering at the multiple embedded by-pass switch (2).
7. solar cell module according to claim 5, which is characterized in that the terminal box (8) includes:
Box body (12), the box body (12) is interior to be formed with chamber；
Box cover (15), the box cover (15) match with the box body (12) with the closed chamber；
Metallic conductor (11), the metallic conductor (11) are arranged in the chamber, shape on the metallic conductor (11)
At having busbar limit hole (16), the busbar (1) passes through the busbar limit hole (16) and the metallic conductor
(11) it is connected；
Conducting wire, the conducting wire are connected with by power output to power circuit with the metallic conductor (11),
Wherein, the busbar limit hole (16) extends along the longitudinal direction of the solar cell module.
8. solar cell module according to claim 7, which is characterized in that the solar cell module further includes frame
Frame (10), the frame (10) are set in the outside of the photovoltaic glass (7), solar battery string group and backboard (6).
9. solar cell module according to claim 8, which is characterized in that the frame is insulating frame, described to connect
The box body (12) of wire box (8) and the frame (10) are integrally formed, and busbar perforation is formed on the frame (10)
(20), terminal box (8 ') is arranged on the frame (10), and the busbar (1) is from the backboard (6) and the photovoltaic glass
(7) it is pierced by between and passes through busbar perforation (20) and be connected with the terminal box (8).
10. solar cell module according to claim 5, which is characterized in that the solar battery string group is right
It is required that solar battery string group described in 4, the terminal box (8) is located at the long side both sides of the edge of the solar cell module
Middle position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603841.4A CN110190146A (en) | 2019-07-05 | 2019-07-05 | Solar battery string group and solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603841.4A CN110190146A (en) | 2019-07-05 | 2019-07-05 | Solar battery string group and solar cell module |
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| Publication Number | Publication Date |
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| CN110190146A true CN110190146A (en) | 2019-08-30 |
Family
ID=67725139
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910603841.4A Pending CN110190146A (en) | 2019-07-05 | 2019-07-05 | Solar battery string group and solar cell module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114006582A (en) * | 2021-11-19 | 2022-02-01 | 常州时创能源股份有限公司 | Series connection method of photovoltaic modules |
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