CN110112244A - Solar cell piece, solar battery string and solar module - Google Patents
Solar cell piece, solar battery string and solar module Download PDFInfo
- Publication number
- CN110112244A CN110112244A CN201910319349.4A CN201910319349A CN110112244A CN 110112244 A CN110112244 A CN 110112244A CN 201910319349 A CN201910319349 A CN 201910319349A CN 110112244 A CN110112244 A CN 110112244A
- Authority
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- China
- Prior art keywords
- solar cell
- welding
- slot
- cell piece
- solar
- 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 62
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 239000012634 fragment Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 235000008216 herbs Nutrition 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000013083 solar photovoltaic technology Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 210000002268 wool Anatomy 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
- H01L31/05—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
- H01L31/0508—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 the interconnection means having a particular shape
-
- 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
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Sustainable Energy (AREA)
- Photovoltaic Devices (AREA)
Abstract
This application discloses a kind of solar cell piece, solar battery string and solar modules, wherein solar cell piece, including substrate, at least described substrate have multiple weldings to walk through slot for being arranged side by side on an overlapped side end face.Above scheme, when the solar cell piece carries out imbricate interconnection, welding is through welding and walks through slot, and positive surface member corresponding with adjacent solar cell piece and back side component connect and to form battery strings respectively at its both ends, walked in through slot since welding is located at welding, then the lap-joint of two solar cell pieces, namely be overlapped position at it is very close to each other, therefore it solves in laminating technology, crack or broken problem occurs in solar cell piece.
Description
Technical field
The present invention relates generally to solar photovoltaic technology fields, and in particular to a kind of solar cell piece, solar cell
String and solar module.
Background technique
With the rapid development of photovoltaic industry, the demand of novel product is continuously increased.Client is for photovoltaic at this stage
Component efficiency requires constantly to be promoted, and cancels solar cell piece piece spacing in photovoltaic module, be overlapped between solar cell piece gradually at
For trend.As shown in Figure 1-3, one end of welding 2 is connected on 1 cathode of solar cell piece, and is welded in conventional photovoltaic component
The other end with 2 is connected on the anode of adjacent solar cell piece 1, after the lamination welding of solar cell piece 1, two panels solar cell piece
Exist between 1 because welding 2 thickness due to the gap that is formed.Due between the presence of two panels solar cell piece lap position in lamination process
Gap, the pressure F in laminating machine cause overlapping crack rate, fragment rate to increase.
Summary of the invention
In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of solar cell piece, solar battery string and too
There is crack or broken problem for reducing solar cell piece in positive battery component.
In a first aspect, the present invention provides a kind of solar cell piece, including substrate, at least described substrate is for overlapped side
Being arranged side by side on end face has multiple weldings to walk through slot.
Further, it is rectangular channel, diamond shape slot, dovetail groove, arc groove or horn mouth slot that the welding, which walks through slot,.
Further, it is 0.3mm-2mm that the welding, which walks the depth of through slot,.
Further, it is 0.8mm-3mm that the welding, which walks the maximum width of through slot,.
Second aspect, the present invention provide a kind of solar battery string, including at least two above-mentioned solar cell pieces, it is described too
Positive cell piece is arranged in imbricate；
It further include the welding that through slot is walked across the welding, one end of the welding and the underlying sun electricity
The positive surface member of pond piece is electrically connected, and the other end is electrically connected with the back side component for the solar cell piece being located above, the weldering
The depth that band walks through slot is greater than the overlapping widths of the two adjacent solar cell pieces.
Further, the positive surface member is positive at least one of face electrode, front pad and front gate line.
Further, the back side component is at least one of rear electrode, backside pads and back side grid line
Further, the maximum width that the welding walks through slot is greater than the width of the welding.
Further, the overlapping widths are 0.1mm-1.5mm.
The third aspect, the present invention provide a kind of solar module, include multiple above-mentioned solar battery strings.
Above scheme, when the solar cell piece carries out imbricate interconnection, welding is through welding and walks through slot, and its both ends
Positive surface member corresponding with adjacent solar cell piece and back side component connect and to form battery strings respectively, since welding is located at welding
Walk in through slot, then the lap-joint of two solar cell pieces, namely be overlapped position at it is very close to each other, therefore solve lamination work
In skill, there is crack or broken problem in solar cell piece.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram of photovoltaic module in the prior art；
Fig. 2 is the exploded view of solar cell piece interconnection in the prior art；
Fig. 3 is the schematic diagram of solar cell piece laminating technology in the prior art；
Fig. 4 is the top view of solar cell piece provided in an embodiment of the present invention；
Fig. 5 be another embodiment of the present invention provides solar cell piece top view；
Fig. 6 is the top view for the solar cell piece that further embodiment of this invention provides；
Fig. 7 is the perspective view of solar battery string provided in an embodiment of the present invention.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 4, Figure 5, solar cell piece 1 provided by the invention, including substrate, those skilled in the art can manage
Solution, substrate here, which refers to, forms silicon base by making herbs into wool, diffusion, etching, the deposition processes such as passivating film and antireflective coating
Component, at least substrate have multiple weldings to walk through slot 4 for being arranged side by side on an overlapped side end face.It is as referred to herein to be used to take
The side connect refers in carrying out stacked tile type connection, in the side for being overlapped (overlapping) position.
Welding can be set in the side of substrate and walk through slot 4, welding can also be respectively provided in the opposite two sides of substrate and worn
Row through slot 4.
Wherein, Fig. 4 shows three solar cell pieces 1 arranged side by side, which is side setting
Welding walks through slot 4.
Fig. 5 shows three solar cell pieces 1 arranged side by side, which is that opposite two sides are equal
Through slot 4 is walked provided with welding.
The opposite two sides of solar cell piece 1 are respectively provided with welding and walk through slot 4, so that the solar cell piece forms symmetrical knot
Structure can not have to consider its placement direction, be conducive to improve working efficiency when being interconnected.In addition, being set using bilateral
It sets welding and walks through slot 4 and open up welding compared to unilateral side and walk through slot 4, in the case where guaranteeing to pass through for welding, bilateral is set
The depth that the welding set walks through slot 4 can be shallower, and to walk the depth that through slot 4 opens up more shallow for welding, right in grooving process
The damage of solar cell piece is smaller, can reduce and occur the risks such as crack, fragment when opening up welding and walking through slot 4.
Above scheme, when the solar cell piece 1 carries out imbricate interconnection, welding is through welding and walks through slot 4, and its two
Positive surface member corresponding with adjacent solar cell piece and back side component connect and to form battery strings respectively at end, since welding is located at weldering
Band is walked in through slot, then the lap-joint of two solar cell pieces, namely at the position being overlapped it is very close to each other, therefore solve and be laminated
In technique, there is crack or broken problem in solar cell piece.
As a kind of implementation, size >=125mm of the solar cell piece is full wafer cell piece through half,
One third, a quarter, sub- cell piece made of the cutting of 1/5th or six/first-class, main grid line number >=2 thereon.
Further, it is rectangular channel, diamond shape slot, dovetail groove, arc groove or horn mouth slot that welding, which walks through slot,.Wherein, Fig. 5
It is horn mouth slot that the welding shown, which walks through slot 4,.Welding is walked through slot 4 and can be formed when solar cell piece produces, can also be with
It cuts to be formed by slicer after solar cell piece production.It is arc groove that welding shown in Fig. 6, which walks through slot 4, arc groove
Camber line can be minor arc, semi arch or major arc, preferably minor arc and semi arch, using arc groove compared to above-mentioned other structures
Slot, when being slotted, it is only necessary to once cut (such as rectangular channel needs to cut three times, i.e., each side needs to carry out one respectively
Secondary laser cutting), damage of the cross-notching to solar cell piece can be reduced, crack, the risk of fragment caused by slotting are reduced.Its
In, it is illustrated only in Fig. 6 and arc groove is set in the side of solar cell piece 1, what it can also be opposite in solar cell piece 1 certainly
Two sides are respectively provided with arc groove.
Further, it is 0.3mm-2mm that welding, which walks the depth of through slot 4, to meet two solar cell pieces with enough
In the case where overlapping widths, there are also the un-overlapped parts of partial groove section to be covered, and is pierced by welding therefrom smoothly.This paper institute
The depth of finger is the visual angle with Fig. 4, along arrow H downwardly direction.
Further, the maximum width that welding walks through slot 4 is 0.8mm-3mm, so that welding can be smoothly from weldering
Band is walked through slot 4 and is pierced by.
Second aspect, as shown in fig. 7, the present invention provides a kind of solar battery string, including at least two above-mentioned sun electricity
Pond piece 1, the solar cell piece 1 are arranged in imbricate；It further include the welding 2 that through slot 4 is walked across welding, one end of welding 2
It is electrically connected with the positive surface member of underlying solar cell piece 1, the back side structure of the other end and the solar cell piece 1 being located above
Part electrical connection, the depth that welding walks through slot 4 are greater than the overlapping widths of two adjacent solar cell pieces 1.
The solar battery string embodiment, using the solar cell piece 1 of above-described embodiment, effect referring to above-described embodiment,
Which is not described herein again.
Further, positive surface member is positive at least one of face electrode, front pad and front gate line.Generally, just
Cathode of the surface member as solar cell piece 1.
Further, the back side component is at least one of rear electrode, backside pads and back side grid line.Generally
Ground, anode of the back side component as solar cell piece 1.
Front as referred to herein is one side of the solar cell piece 1 using the Shi Yingxiang sun, and the back side is back to the one of the sun
Face.
Further, welding walk through slot 4 maximum width be greater than welding width, so as to welding 2 can be convenient from
Welding is walked in through slot 4 and is pierced by.
Further, overlapping widths 0.1mm-1.5mm may be implemented preferably to connect, and not using this overlapping widths
Can because the adjacent covered area of solar cell piece 1 is excessive cause efficiency to reduce the problem of.
The third aspect, the present invention provide a kind of solar module, include multiple above-mentioned solar battery strings.Specifically
Ground, the solar module may include frame, and multiple above-mentioned solar battery strings are arranged side by side in frame.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature any
Other technical solutions of combination and formation.Such as features described above and (but being not limited to) disclosed herein have similar functions
Technical characteristic is replaced mutually and the technical solution that is formed.
Claims (10)
1. a kind of solar cell piece, including substrate, which is characterized in that at least described substrate on an overlapped side end face side by side
It is provided with multiple weldings and walks through slot.
2. solar cell piece according to claim 1, which is characterized in that it is rectangular channel, diamond shape that the welding, which walks through slot,
Slot, dovetail groove, arc groove or horn mouth slot.
3. solar cell piece according to claim 1 or 2, which is characterized in that the depth that the welding walks through slot is
0.3mm-2mm。
4. solar cell piece according to claim 3, which is characterized in that the maximum width that the welding walks through slot is
0.8mm-3mm。
5. a kind of solar battery string, which is characterized in that including at least two described in any item solar cells of claim 1-4
Piece, the solar cell piece are arranged in imbricate；
It further include the welding that through slot is walked across the welding, one end of the welding and the underlying solar cell piece
The electrical connection of positive surface member, the other end is electrically connected with the back side component for the solar cell piece being located above, and the welding is worn
The depth of row through slot is greater than the overlapping widths of the two adjacent solar cell pieces.
6. solar battery string according to claim 5, which is characterized in that the positive surface member is positive face electrode, face bonding
At least one of disk and front gate line.
7. solar battery string according to claim 5 or 6, which is characterized in that the back side component is rear electrode, the back side
At least one of pad and back side grid line.
8. solar battery string according to claim 5 or 6, which is characterized in that the welding walks the maximum width of through slot
Greater than the width of the welding.
9. solar battery string according to claim 5 or 6, which is characterized in that the overlapping widths are 0.1mm-1.5mm.
10. a kind of solar module, which is characterized in that include any solar battery string of multiple claim 5-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910319349.4A CN110112244A (en) | 2019-04-19 | 2019-04-19 | Solar cell piece, solar battery string and solar module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910319349.4A CN110112244A (en) | 2019-04-19 | 2019-04-19 | Solar cell piece, solar battery string and solar module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110112244A true CN110112244A (en) | 2019-08-09 |
Family
ID=67486014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910319349.4A Pending CN110112244A (en) | 2019-04-19 | 2019-04-19 | Solar cell piece, solar battery string and solar module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110112244A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600563A (en) * | 2019-09-10 | 2019-12-20 | 天合光能股份有限公司 | Cut half battery piece and cut half photovoltaic module |
| CN111029432A (en) * | 2019-12-31 | 2020-04-17 | 晶澳（扬州）太阳能科技有限公司 | Solar cell string, solar cell assembly and manufacturing method of solar cell string |
| WO2021072906A1 (en) * | 2019-10-16 | 2021-04-22 | 浙江晶科能源有限公司 | Photovoltaic assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004281799A (en) * | 2003-03-17 | 2004-10-07 | Kyocera Corp | Solar cell module |
| CN106374016A (en) * | 2016-12-03 | 2017-02-01 | 苏州佳普硕自动化科技有限公司 | Welding belt welding, transmission and holding device for solar cell series welding machine, and series welding machine |
| WO2018155752A1 (en) * | 2017-02-22 | 2018-08-30 | 주식회사 탑선 | Solar cell module |
| CN209896085U (en) * | 2019-04-19 | 2020-01-03 | 泰州隆基乐叶光伏科技有限公司 | Solar cell, solar cell string and solar cell module |
-
2019
- 2019-04-19 CN CN201910319349.4A patent/CN110112244A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004281799A (en) * | 2003-03-17 | 2004-10-07 | Kyocera Corp | Solar cell module |
| CN106374016A (en) * | 2016-12-03 | 2017-02-01 | 苏州佳普硕自动化科技有限公司 | Welding belt welding, transmission and holding device for solar cell series welding machine, and series welding machine |
| WO2018155752A1 (en) * | 2017-02-22 | 2018-08-30 | 주식회사 탑선 | Solar cell module |
| CN209896085U (en) * | 2019-04-19 | 2020-01-03 | 泰州隆基乐叶光伏科技有限公司 | Solar cell, solar cell string and solar cell module |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600563A (en) * | 2019-09-10 | 2019-12-20 | 天合光能股份有限公司 | Cut half battery piece and cut half photovoltaic module |
| WO2021072906A1 (en) * | 2019-10-16 | 2021-04-22 | 浙江晶科能源有限公司 | Photovoltaic assembly |
| CN111029432A (en) * | 2019-12-31 | 2020-04-17 | 晶澳（扬州）太阳能科技有限公司 | Solar cell string, solar cell assembly and manufacturing method of solar cell string |
| CN111029432B (en) * | 2019-12-31 | 2022-03-18 | 晶澳（扬州）太阳能科技有限公司 | Solar cell string, solar cell assembly and manufacturing method of solar cell string |
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