CN109980035A - Photovoltaic module - Google Patents
Photovoltaic module Download PDFInfo
- Publication number
- CN109980035A CN109980035A CN201711335284.XA CN201711335284A CN109980035A CN 109980035 A CN109980035 A CN 109980035A CN 201711335284 A CN201711335284 A CN 201711335284A CN 109980035 A CN109980035 A CN 109980035A
- Authority
- CN
- China
- Prior art keywords
- busbar
- battery strings
- photovoltaic module
- lead
- back side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction 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
- H01L31/04—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
-
- 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
Landscapes
- 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 photovoltaic module, second busbar of battery strings made of being concatenated including several columns as cell piece, the first busbar of each battery strings starting point of connection and each battery strings end of connection, second busbar is located at the back side of the battery strings, and the back side of the battery strings is equipped with the back electrode connecting with the second busbar.First busbar or the second busbar by being arranged in the back sides of battery strings by the present invention, so that it directly can be connect and reduce the use of welding with the back electrode of back side, it has been greatly reduced the occupancy in space simultaneously, and the creepage distance between photovoltaic module metal edge frame is also increased, improve the reliability of photovoltaic module.
Description
Technical field
The present invention relates to photovoltaic power generation technology more particularly to a kind of photovoltaic modulies.
Background technique
Imbrication photovoltaic module is a kind of current more novel efficient photovoltaic module, and cell piece edge is cut into multiple length
The light-receiving surface of battery strip unit, each battery unit is equipped with intensive secondary grid line, then these battery unit edges are mutual
Overlapping connection, forms the mutual contact mode for being similar to tile type, since gap being not present between battery unit, can increase light
The effective illuminating area for lying prostrate component, can accommodate more batteries, and due to battery unit phase in same component version type
Mutually overlapping connection, eliminates the welding in conventional photovoltaic component, thus can substantially reduce by welding bring resistance loss.With biography
Uniting, photovoltaic module is the same, and imbrication photovoltaic module also needs the normal operation that power generation is ensured by bypass diode, due to taking
Disappeared battery unit surface welding and battery unit dense arrangement the reason of so that big by welding bring resistance loss
It is big to reduce, but since the access of bypass diode is needed using busbar, and there is still a need for logical between busbar and battery unit
It crosses a bit of welding to be connected, thus can bring the resistance loss of part, how reduce the use of welding as far as possible to subtract
Few resistance loss improves product reliability, is a very important research direction for high-efficiency photovoltaic component.
Summary of the invention
In view of this, the present invention provides a kind of photovoltaic module, the loss of resistance bring can be reduced, photovoltaic module is improved
Reliability.
Specifically, the present invention is achieved through the following technical solutions: providing a kind of photovoltaic module, including several columns by electricity
Battery strings made of pond piece concatenation, the first busbar of each battery strings starting point of connection and each battery strings end of connection the
Two busbars, second busbar are located at the back side of the battery strings, and the back side of the battery strings is equipped with and the second busbar
The back electrode of connection.
Further, first busbar is set to the back side of battery strings and is dielectrically separated from the back electrode of back side, and
First busbar is arranged in parallel with second busbar.
Further, first busbar is connected to the face side of the battery strings, and the first busbar by welding
Upper and lower two sides be equipped with insulating trip.
Further, first busbar is located at except the distributed areas of the battery strings, and by welding with it is each
The first cell piece of battery strings is electrically connected；Second busbar is located in the battery strings distributed areas, and with each electricity
The back electrode of the last bit cell piece back side of pond string is electrically connected.
Further, the photovoltaic module further includes the third confluence between the first busbar and the second busbar
Item, the third busbar are connected to each column battery strings back side and have concatenated the battery being located in same position in each column battery strings
The quantity of piece, the third busbar is at least two.
Further, the photovoltaic module further includes vertical with the first busbar, the second busbar and third busbar
Lead.
Further, the lead includes the first lead, the second lead and third lead, and described first draws
Item extends along the length direction of battery strings, and the both ends of the first lead extend outwardly beyond first busbar and the respectively
Two busbars.
Further, first lead and the second lead are separately connected with two third busbars, and with first
Busbar and the second busbar are in be dielectrically separated from.
Further, first lead intersects vertically with first busbar and the second busbar, and vertical
Intersection is provided with insulating trip so that the first lead and the first busbar, the second busbar to be dielectrically separated from.
Further, the several columns battery strings extend parallel to each other, and 3-10mm is equipped between two neighboring battery strings
Gap, first lead is in the gap between adjacent two column battery strings.
The present invention by the way that the first busbar or the second busbar to be arranged in the back sides of battery strings, make its can directly with back
The back electrode of surface side connects and reduces the use of welding, while being greatly reduced the occupancy in space, and also increase with
Creepage distance between photovoltaic module metal edge frame improves the reliability of photovoltaic module.
Detailed description of the invention
Fig. 1 is the back side connection schematic diagram of the battery strings of photovoltaic module in an embodiment of the present invention.
Fig. 2 is the circuit connection diagram of photovoltaic module shown in FIG. 1.
Fig. 3 is the diagrammatic cross-section of photovoltaic module shown in FIG. 1.
Fig. 4 is the diagrammatic cross-section of photovoltaic module in another embodiment of the invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
It is only to be not intended to limit the invention merely for for the purpose of describing particular embodiments in terminology used in the present invention.
It is also intended in the present invention and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
As shown in Figure 1 to Figure 3, a kind of photovoltaic module is provided in an embodiment of the present invention comprising several columns are set side by side
First busbar 20 of the battery strings 10, connection 10 starting point of each column battery strings set connects the second of 10 end of each column battery strings
Busbar 30, the third busbar 40 between the first busbar 20 and the second busbar 30 and perpendicular to it is described first confluence
The lead of item 20.
The each column battery strings 10 include the strip cell piece 11 of several linearly mutual folded arrays, and adjacent
Two strip cell pieces 11 it is overlapping by long side, the first and last position of each column battery strings 10 is respectively equipped with the first 11 He of cell piece
Last bit cell piece 11, the first place cell piece 11 are connect with first busbar 20, the last bit cell piece 11 and described the
The connection of two busbars 30.The several columns battery strings 10 extend parallel to each other, and 3- is equipped between two neighboring battery strings 10
The gap 10mm 12.
First busbar 20, the second busbar 30 and third busbar 40 are arranged in parallel, wherein the first confluence
Item 20 is connected on the first cell piece 11 of each column battery strings 10 by welding 21, i.e., the first busbar 20 is located at battery strings
Outside 10 regions, first busbar 20 is connected there are at a distance from by the welding 21 between each column battery strings 10,
Second busbar 30 is then connected directly on the last bit cell piece 11 of each column battery strings 10, specifically, each column electricity
The back side of the last bit cell piece 11 of pond string 10 is equipped with the back electrode 13 being electrically connected with second busbar 30, and described second converges
Stream item 30 directly can connect and be hidden in the back side of last bit cell piece 11 with the back electrode 13, so, no longer need to the
Two busbars 30 are placed in outside 10 region of battery strings, reduce the space hold of the second busbar 30.The third busbar 40
It is arranged in parallel with second busbar 30, is connected to 10 back side of each column battery strings, and concatenated position in each column battery strings 10
In the cell piece 11 in same position, in a preferred embodiment of the present invention, the quantity of the third busbar 40 is two, is set
The purpose set be for by cell piece 11 be divided into quantity it is identical three string, and with first busbar 20, the second busbar 30
Bypass diode 60 is connected in parallel on to the both ends of every string jointly.
The lead includes the first lead 51, the second lead 52 and third lead 53, wherein described first draws
Shaping 51 intersects vertically with first busbar 20, the second busbar 30 and two third busbars 40, and first draws
The both ends of item 51 extend outwardly beyond first busbar 20 and the second busbar 30 respectively, but first lead 51
Only with one in two third busbars 40 electric connection, and another third busbar 40 then with second lead 52
It is electrically connected, in order to avoid the first lead 51 and the first busbar 20, the second busbar 30 are in contact when intersecting vertically,
Between first lead 51 and first busbar 20, the second busbar 30 by insulating trip 70 realize mutually every
From.First lead 51 extends along the length direction of each column battery strings 10, and the first lead 51 is located at adjacent two column
In gap 12 between battery strings 10.Second lead 52 is arranged in parallel with first lead 51, one end connection
To one in two third busbars 40.The third lead 53 is equipped with two, converges respectively with described first
Item 20 and the connection of the second busbar 30, that is to say, that the first lead 51 and the second lead 52 respectively with two thirds
Busbar 40 connects, and is dielectrically separated from setting, the second lead 52 and second with the first busbar 20 and the second busbar 30
Isolation insulated from each other is realized also by insulating trip 70 between busbar 30.
In an alternative embodiment of the invention, first busbar 20 may also be arranged on the back side of battery strings 10, such as Fig. 4 institute
Show, first busbar 20 can be turned down to the back side of battery strings 10 by fold welding 21, this embodiment is required first
Insulating trip 70 is set between busbar 20 and the back side of battery strings 10, so that the upper and lower two sides of the first busbar 20 are equipped with absolutely
Embolium 70.In the present embodiment, first busbar 20 and the second busbar 30 are arranged at the back side of battery strings 10, can be with
It is further to reduce space hold.
As it can be seen that the present invention is connected by the back side setting of the last bit cell piece 11 in each column battery strings 10 with the second busbar 30
The electrode connect, so that the second busbar 30 can connect at the back side of last bit cell piece 11, to be hidden in the back of battery strings 10
Face utilizes the setting of third busbar 40, lead to reduce the occupancy in space, realizes two poles of battery strings 10 and bypass
The connection of pipe 60, since the connection of the second busbar 30 eliminates welding 21, the resistance band reduced in Process of Confluence carrys out power
Loss, and the second busbar 30 the battery strings back side is set after increase at a distance from photovoltaic module metal edge frame, that is, increase
Creepage distance between the two, also improves the reliability of photovoltaic module.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (10)
1. a kind of photovoltaic module, battery strings made of being concatenated including several columns as cell piece connect each battery strings starting point
First busbar and the second busbar of each battery strings end of connection, which is characterized in that second busbar is located at described
The back side of battery strings, the back side of the battery strings are equipped with the back electrode connecting with the second busbar.
2. photovoltaic module as described in claim 1, which is characterized in that first busbar is set to the back side of battery strings simultaneously
It is dielectrically separated from the back electrode of back side, and first busbar is arranged in parallel with second busbar.
3. photovoltaic module as claimed in claim 2, which is characterized in that first busbar is connected to the electricity by welding
The face side of pond string, and the upper and lower two sides of the first busbar are equipped with insulating trip.
4. photovoltaic module as described in claim 1, which is characterized in that first busbar is located at the distribution of the battery strings
Except region, and it is electrically connected by welding and the first cell piece of each battery strings；Second busbar is located at the electricity
Pond is gone here and there in distributed areas, and is electrically connected with the back electrode of the last bit cell piece back side of each battery strings.
5. the photovoltaic module as described in any one of Claims 1-4 item, which is characterized in that the photovoltaic module further includes
Third busbar between the first busbar and the second busbar, the third busbar are connected to each column battery strings back side
And the cell piece being located in same position in each column battery strings has been concatenated, the quantity of the third busbar is at least two.
6. photovoltaic module as claimed in claim 5, which is characterized in that the photovoltaic module further includes and the first busbar,
Two busbars and the vertical lead of third busbar.
7. photovoltaic module as claimed in claim 6, which is characterized in that the lead includes the first lead, the second extraction
Item and third lead, first lead along battery strings length direction extend, and the both ends of the first lead respectively to
First busbar and the second busbar are extended beyond outside.
8. photovoltaic module as claimed in claim 7, which is characterized in that first lead and the second lead and two
Three busbars are separately connected, and are in be dielectrically separated from the first busbar and the second busbar.
9. photovoltaic module as claimed in claim 8, which is characterized in that first lead and first busbar and the
Two busbars intersect vertically, and are provided with insulating trip at the place of intersecting vertically to converge the first lead and the first busbar, second
Stream item is dielectrically separated from.
10. photovoltaic module as claimed in claim 9, which is characterized in that the several columns battery strings extend parallel to each other, and phase
The gap of 3-10mm, gap of first lead between adjacent two column battery strings are equipped between adjacent two battery strings
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711335284.XA CN109980035A (en) | 2017-12-14 | 2017-12-14 | Photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711335284.XA CN109980035A (en) | 2017-12-14 | 2017-12-14 | Photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109980035A true CN109980035A (en) | 2019-07-05 |
Family
ID=67070999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711335284.XA Pending CN109980035A (en) | 2017-12-14 | 2017-12-14 | Photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109980035A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111430470A (en) * | 2020-04-22 | 2020-07-17 | 环晟光伏(江苏)有限公司 | Foldable bus bar, circuit connection structure and tile folding assembly |
| CN112531058A (en) * | 2019-09-18 | 2021-03-19 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
| CN113659036A (en) * | 2021-08-05 | 2021-11-16 | 中节能太阳能科技（镇江）有限公司 | Photovoltaic module's section mode and connection structure thereof |
| CN114649435A (en) * | 2022-03-29 | 2022-06-21 | 武宇涛 | Photovoltaic module and preparation process thereof |
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| CN206584939U (en) * | 2015-01-29 | 2017-10-24 | 太阳能公司 | The high density solar energy module of string with band |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531058A (en) * | 2019-09-18 | 2021-03-19 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
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| CN113659036A (en) * | 2021-08-05 | 2021-11-16 | 中节能太阳能科技（镇江）有限公司 | Photovoltaic module's section mode and connection structure thereof |
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| CN114649435A (en) * | 2022-03-29 | 2022-06-21 | 武宇涛 | Photovoltaic module and preparation process thereof |
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Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Applicant after: Atlas sunshine Power Group Co.,Ltd. Applicant after: Changshu Artes Sunshine Power Technology Co.,Ltd. Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Applicant before: CSI SOLAR POWER GROUP Co.,Ltd. Applicant before: Changshu Artes Sunshine Power Technology Co.,Ltd. |