CN109786492A - Photovoltaic module and its manufacturing method - Google Patents
Photovoltaic module and its manufacturing method Download PDFInfo
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- CN109786492A CN109786492A CN201910171480.0A CN201910171480A CN109786492A CN 109786492 A CN109786492 A CN 109786492A CN 201910171480 A CN201910171480 A CN 201910171480A CN 109786492 A CN109786492 A CN 109786492A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000000872 buffer Substances 0.000 claims abstract description 127
- 238000003466 welding Methods 0.000 claims abstract description 91
- 238000000034 method Methods 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 10
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 6
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 6
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 3
- 230000003447 ipsilateral effect Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 5
- 230000011218 segmentation Effects 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001548 drop coating Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Classifications
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- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The embodiment of the invention provides a kind of photovoltaic module and its manufacturing methods.Wherein the photovoltaic module includes several battery tandems, and the battery tandem includes several solar cells, welding and buffer layer.For connecting adjacent two solar cell so that above-mentioned several solar cells are linked to be string, buffer layer can be set to the edge intersected on the solar cell with welding and be located at the solar cell and be equipped between the surface and the welding of electrode welding.
Description
Technical field
The present invention relates to field of solar energy more particularly to a kind of photovoltaic module and its manufacturing methods.
Background technique
In traditional photovoltaic module, it is connected with each other between solar cell piece by welding, is connected to one end of welding too
One face electrode of positive cell piece, the other end are connected to the another side electrode of adjacent solar cell piece, to form battery concatenation.?
In above-mentioned conventional photovoltaic component, since welding needs to be pressed in cell piece edge, and connecing between welding and cell piece edge
A possibility that touching belongs to hard contact, this just brings certain cell piece damage.
Summary of the invention
The purpose of the present invention is to provide a kind of photovoltaic module and its manufacturing methods.
To achieve the above object, the embodiment of the present invention uses following technical scheme:
A kind of photovoltaic module, including several battery tandems, the battery tandem include:
Several solar cells；
Welding, for connecting adjacent two solar cell so that above-mentioned several solar cells are linked to be string；
Buffer layer, the edge intersected on the solar cell with welding are simultaneously located at the solar cell equipped with electrode
Between surface and the welding.
Wherein, the edge of adjacent two solar cell is mutually overlapping to form overlapping space between adjacent two solar cell,
The buffer layer is located in the overlapping space.
Wherein, the buffer layer includes being set to the positive front buffer layer of solar cell and the back set on back of solar cell
Face buffer layer, and the front buffer layer and the back side buffer layer are located at different sides edge.
Wherein, the buffer layer is fixed on the surface；Preferably, the buffer layer with a thickness of 200~400um.
Wherein, the buffer layer it is in long strip and extend along the edge or the buffer layer include n interval be arranged and
Buffer disc corresponding with welding position, n are the welding quantity of solar cell single side surface setting.
Wherein, size of the buffer layer on welding extending direction is greater than or equal to the overlapping space and extends in welding
Size on direction.
Wherein, the welding includes the first segment welded with solar cell front electrode and adjacent another solar cell
Rear electrode welding second segment and connection above-mentioned first segment and second segment changeover portion, the changeover portion is placed in
In the overlapping space, the width of the changeover portion is greater than the width of the first segment and/or the second segment；Preferably, institute
First segment and the second segment is stated to overlap in the overlapping space foreign minister.
Wherein, the buffer layer includes ethylene-vinyl acetate copolymer EVA and/or polyolefin elastomer.
On the other hand, a kind of photovoltaic module, including several battery tandems, the battery tandem include:
Several solar cells, the edge of adjacent two solar cell is mutually overlapping to be handed over being formed between adjacent two solar cell
Folded space；
Welding, for connecting adjacent two solar cell and by the overlapping space；
Buffer layer is set in the overlapping space and between adjacent two welding.
Wherein, the welding includes the first segment welded with solar cell front electrode and adjacent another solar cell
Rear electrode welding second segment and connection above-mentioned first segment and second segment changeover portion, the changeover portion is placed in
In the overlapping space, the buffer layer is greater than the changeover portion on cell thickness direction in the size on cell thickness direction
Size.
A kind of manufacturing method of photovoltaic module, comprising:
Buffer layer is set at the edge of solar battery surface, the surface is equipped with electrode；
Multiple solar cells are connected into bunchiness by welding, make the buffer layer be located at the surface and the welding it
Between.
Wherein, the method also includes:
The edge of adjacent solar cell in above-mentioned multiple solar cells is mutually overlapping, between adjacent two solar cell
Form overlapping space.
Wherein, described to include: in the edge of solar battery surface setting buffer layer
The first solar cell to be split is provided, first solar battery surface is equipped with electrode；
Cut-off rule is formed in first solar battery surface；
In first solar battery surface, buffer layer is set；
First solar cell is divided at least two cell strips along the cut-off rule, the cell strip includes that edge should
The buffer layer of cell strip long side arrangement.
Wherein, the buffer layer includes being set to the positive front buffer layer of solar cell and the back set on back of solar cell
Face buffer layer, and the front buffer layer and the back side buffer layer are located at different sides edge, it is preferred that the buffer layer
With a thickness of 200~400um, it is preferred that size of the buffer layer on welding extending direction is greater than or equal to the overlapping sky
Between size on welding extending direction.
Wherein, the buffer layer is in long strip；Or the buffer layer includes the setting of n interval and corresponding with welding position
Buffer disc, n are the welding quantity of solar cell single side surface setting.
Wherein, first solar cell has opposite and parallel first edge and second edge, first sun
Battery surface is equipped with the first strip buffer layer of the neighbouring first edge and the second strip of the neighbouring second edge buffers
Layer, the cutting line is between the first strip buffer layer and the second strip buffer layer.
Wherein, the welding includes the first segment welded with solar cell front electrode and adjacent another solar cell
Rear electrode welding second segment and connection above-mentioned first segment and second segment changeover portion, the changeover portion is placed in
In the overlapping space, the width of the changeover portion is greater than the width of the first segment and/or the second segment.
On the other hand, a kind of manufacturing method of photovoltaic module, comprising:
Buffer layer is set at the edge of solar battery surface, the surface is equipped with electrode；
Multiple solar cells are connected into bunchiness by welding, wherein by adjacent solar cell in the multiple solar cell
Edge is mutually overlapping, to form the overlapping space passed through for welding between adjacent two solar cell, is located at the buffer layer
In the overlapping space and it is filled between adjacent two welding.
Wherein, the welding includes the first segment welded with solar cell front electrode and adjacent another solar cell
Rear electrode welding second segment and connection above-mentioned first segment and second segment changeover portion, the changeover portion is placed in
In the overlapping space, the buffer layer is greater than the changeover portion on cell thickness direction in the size on cell thickness direction
Size.
Buffer layer is arranged by solar battery surface in the embodiment of the present invention, can use the buffer layer and plays and alleviates sun electricity
The effect of hard contact between pond and welding, to reduce the sliver rate of photovoltaic module.
Detailed description of the invention
Figure 1A is that adjacent two solar cell provided in an embodiment of the present invention suitable for stacked component intersects overlapping state
Schematic diagram.
Figure 1B is the signal of the adjacent two solar cells connection status provided in an embodiment of the present invention suitable for general components
Figure.
Fig. 2 is the welding structural schematic diagram of adjacent two solar cell of connection provided in an embodiment of the present invention.
Fig. 3 is the top view of the solar cell before the segmentation that one embodiment of the invention provides.
Fig. 4 is the top view of the solar cell before the segmentation that one embodiment of the invention provides.
Fig. 5 is the top view of the solar cell before the segmentation that one embodiment of the invention provides.
Fig. 6 is the schematic cross-section that the solar cell that one embodiment of the invention provides intersects overlapping state.
Fig. 7 is the top view of the solar cell before the segmentation that one embodiment of the invention provides.
Fig. 8 is that the solar cell that embodiment shown in Fig. 7 provides intersects the schematic cross-section of overlapping state (along cutting line direction
Interception).
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, right in the following with reference to the drawings and specific embodiments
The present invention is described in detail.
Here, it should also be noted that, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings only
Show the structure and/or processing step closely related with the solution of the present invention, and be omitted with relationship of the present invention less its
His details.
In addition, it should also be noted that, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.
As shown in Figure 1A, for suitable for adjacent two solar cell of stacked component intersection overlapping state.Photovoltaic module includes
Several battery tandems, usual battery tandem are linear.Battery tandem includes several solar cells 1 and is used for several sun electricity
Pond 1 connects the welding 2 of bunchiness (as connected), and the solar cell includes but is not limited to crystal silicon cell or hull cell.With string
For connection, adjacent two battery can realize connection by the n root welding parallel with battery surface main gate line (electrode), wherein n is
The main grid number of lines of solar cell single side surface setting.
In stacked component, for the effective area for increasing cell piece on component, improve power and component efficiency, it is adjacent too
Overlap mutually to form overlapping space between adjacent two solar cell at the edge in positive electricity pond.Intersect on solar cell 1 with welding 2
Edge be provided with buffer layer 12, the buffer layer 12 is placed in above-mentioned overlapping space in battery series welding, and makes
Buffer layer 12 is between 1 surface of welding 2 and solar cell, thus by avoiding directly contacting between welding and solar cell
Mode, to solve the problems, such as in existing component hard contact between welding and battery edge.
It as shown in Figure 1B, is the connection status of adjacent two solar cell suitable for general components.As can be seen that conventional group
There may be certain gap or close to zero clearance between adjacent two solar cell of part.In the assembly, it is set to battery side
Buffer layer at edge is equally applicable, also solves the problems, such as in existing component hard contact between welding and battery edge.
As shown in Fig. 2, every root bead band may include the first segment 21 and phase with the front main grid wire bonding of a solar cell
The connected second segment 22 of the back side main gate line of adjacent another solar cell and the changeover portion for connecting first segment 21 and second segment 22
23.The welding includes but is not limited to tin-coated copper strip or applies tin copper strips, the shape of welding and with no restriction.
In the specific embodiment of the invention, above-mentioned first segment 21 can select round wires welding or polygon welding, to reduce
The shading in cell piece front (i.e. light-receiving surface)；Above-mentioned second segment 22 can select flat welding, to cooperate the cell piece back side wider
Main gate line, reduce resistance simultaneously improve power.Different types of welding need to be used in view of first segment 21 and second segment 22, above-mentioned the
One section 21 and second segment 22 can be two sections of weldings independent of each other, in series welding, the first segment 21 can be welded in one
The second segment 22, is welded in the back side of another cell piece by the front of cell piece, and then by first segment 21 and second segment 22
End be attached.Wherein, in actual production, the first segment 21 is with the second segment 22 usually in the overlapping space
Foreign minister's overlap joint.
In stacked component, above-mentioned changeover portion 23 is placed in overlapping space, and the width of the changeover portion 23 can be greater than
The width of the first segment 21 and/or the second segment 22, so that changeover portion 23 is generally flat, to increase changeover portion
23 contact area in overlapping space between the object that is in contact further decreases the possibility of lamination position cells rupture.It should
Flat changeover portion 23 can be obtained by flattening conventional welding along certain orientation.
In above-mentioned photovoltaic module, solar cell can use the solar cell piece of stock size (being substantially square),
It can also be using battery unit obtained by dividing the cell piece of stock size.For convenience of description, herein by the sun before segmentation
Battery is defined as " the first solar cell ".
As shown in figure 3, the first solar battery surface 10 can be printed with main gate line 15 and be connected with the main gate line 15 thin
Grid line (not shown).Several parallel cutting lines 17 are drawn on the first solar battery surface 10, cutting line quantity depends on institute
The cell strip quantity that need to divide.By taking 1 cuts 3 as an example, before it is split, it can be arranged on first solar battery surface 10 in advance
3 parallel buffer layers, buffering layer number are consistent with the cell strip quantity that single first solar cell piece is divided.Wherein, it buffers
Layer can select the material lower than welding hardness, such as: ethylene-vinyl acetate copolymer EVA or polyolefin elastomer etc..
Form the technique of buffer layer for example are as follows: firstly, one layer of padded coaming solvent is applied in battery surface by drop coating or spin coating mode,
Then, solvent is removed by roasting mode, to leave unpolymerized padded coaming in battery surface to form buffer layer.Certainly,
Solid buffer layer can also be used and be fixed on the specific position of solar battery surface.In embodiments of the present invention, buffer layer
Thickness can be 200~400um, to take into account buffering effect and material cost.
First solar cell piece has opposite and parallel first edge 11 and second edge 13, and the surface 10 is equipped with neighbour
The second strip buffer layer 12b of first strip buffer layer 12a of the nearly first edge 11 and the neighbouring second edge 13, institute
Cutting line 17 is stated between the first strip buffer layer 12a and the second strip buffer layer 12b, first strip is slow
It rushes and is additionally provided with the intermediate strip buffer layer 12c that neighbouring cutting line 17 is arranged between layer 12a and the second strip buffer layer 12b.
So set, the specific gravity for being stacked two by cut edge can be reduced, and improved as far as possible by a non-cutting edge and all
The specific gravity that cut edge edge is stacked, so as to improve the fragment rate of component entirety.
As shown in figure 4, obtaining the schematic diagram of two half for a piece of first solar cell is cut in half.For such
Cell piece design applies one layer of padded coaming in cell piece lamination region by screen printing mode, and width can be 0.8mm, then
Solvent is removed by 80~100 DEG C of roasting modes of low temperature, leaves unpolymerized padded coaming about 300um.
In Fig. 3 and Fig. 4, buffer layer is in long strip and extends along the side of the first solar cell, but this mode
In the presence of the waste of padded coaming to a certain extent.For this purpose, discontinuous layer buffer design as shown in Figure 5 can be used, wherein
The multiple row discontinuous buffer layer vertical with main gate line is formed on battery surface 10, each column buffer layer may include that n interval is set
It sets and the size of buffer disc 12d corresponding with welding position, buffer disc 12d in main gate line width direction can be greater than or wait
In the width of the welding, to avoid the direct contact of the changeover portion and battery surface that are located in overlapping space.
Cooperation is referring to Fig.1 shown in A and Fig. 6, and in battery tandem, the first adjacent battery 1a and the second battery 1b intersect
Folded, buffer layer 12 is located at welding 2 and solar cell is equipped between the surface of electrode.Adjacent the first battery 1a and the second battery 1b
Overlap mutually, buffer layer 12 is located at welding 2 and solar cell is equipped between the surface of electrode.Wherein, for the same solar cell
For, buffer layer may include buffering set on the positive front buffer layer of solar cell and set on the back side of back of solar cell
Layer, and the front buffer layer and the back side buffer layer are located at different sides edge.Certainly, as another feasible side
Can above-mentioned buffer layer 12 only be arranged in the side marginal surface of solar cell in case.
Buffer layer 12 can be greater than or equal to overlapping space on welding extending direction in the size on welding extending direction
Size, so that it is guaranteed that the buffering effect to the welding being located in overlapping space, certain buffer layer can be transparent material, thus
It does not shut out the light.
Referring to shown in Fig. 7 and Fig. 8, in an alternative embodiment of the invention, single-row buffer layer may include multiple interval settings
And the buffer part 12e that is filled between adjacent two welding 2.Wherein, size of the buffer part 12e on cell thickness direction
Size of the changeover portion on cell thickness direction can be greater than, so that being formed between two neighboring buffer part 12e for transition
The channel that section passes through, to alleviate the hard contact of changeover portion and cell piece surface.
Correspondingly, the embodiment of the invention provides the methods for manufacturing the above photovoltaic module.
As first embodiment, this method may include step S1 and S2, in which:
S1: buffer layer is set at the edge of solar battery surface, the surface is equipped with electrode.
S2: multiple solar cells are connected into bunchiness by welding, the buffer layer is made to be located at the surface and the welding
Between.
As second embodiment, stacked component, is then based on the content of first embodiment above, the side in order to obtain
Method further includes step S3:
The edge of adjacent solar cell in above-mentioned multiple solar cells is mutually overlapping, between adjacent two solar cell
Form overlapping space.
It is needed to improve component efficiency by the area for reducing monolithic battery to conventional ruler as 3rd embodiment
Very little battery is split, and is then based on the above second embodiment, and step S1 can be specifically included:
S101: providing the first solar cell to be split, and first solar battery surface is equipped with electrode.
S102: cut-off rule is formed in first solar battery surface.
S103: buffer layer is set in first solar battery surface.
S104: first solar cell is divided at least two cell strips, the cell strip packet along the cut-off rule
Include the buffer layer along cell strip long side arrangement.
Wherein, first solar cell has opposite and parallel first edge and second edge, first sun
Battery surface is equipped with the first strip buffer layer of the neighbouring first edge and the second strip of the neighbouring second edge buffers
Layer, the cutting line is between the first strip buffer layer and the second strip buffer layer.Which can be with maximum limit
Degree ground reduces the ratio for overlapping mutually two cutting edges in component.
As fourth embodiment, a kind of manufacturing method of photovoltaic module includes step S1 and S3, in which:
S1: buffer layer is set at the edge of solar battery surface, the surface is equipped with electrode；
S3: connecting bunchiness by welding for multiple solar cells, wherein by sun electricity adjacent in the multiple solar cell
The edge in pond is mutually overlapping, to form the overlapping space passed through for welding between adjacent two solar cell, makes the buffer layer
In the overlapping space and it is filled between adjacent two welding.
In specifically embodiment, the welding include the first segment welded with solar cell front electrode, with it is adjacent
Another solar cell rear electrode welding second segment and connection above-mentioned first segment and second segment changeover portion, it is described
Changeover portion is placed in the overlapping space, and size of the buffer layer on cell thickness direction is greater than the changeover portion and exists
Size on cell thickness direction.
Buffer layer is arranged by solar battery surface in the embodiment of the present invention, can use the buffer layer and plays and alleviates sun electricity
The effect of hard contact between pond and welding, to reduce the sliver rate of photovoltaic module.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to preferred embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that, it can modify to technical solution of the present invention
Or equivalent replacement, without departing from the spirit and scope of the technical solution of the present invention.
Claims (19)
1. a kind of photovoltaic module, including several battery tandems, it is characterised in that: the battery tandem includes:
Several solar cells；
Welding, for connecting adjacent two solar cell so that above-mentioned several solar cells are linked to be string；
Buffer layer, the edge intersected on the solar cell with welding are simultaneously located at the surface that the solar cell is equipped with electrode
Between the welding.
2. photovoltaic module as described in claim 1, it is characterised in that: the edge of adjacent two solar cell is mutually overlapping in phase
Overlapping space is formed between adjacent two solar cells, the buffer layer is located in the overlapping space.
3. photovoltaic module as described in claim 1, it is characterised in that: the buffer layer includes positive just set on solar cell
Face buffer layer and back side buffer layer set on back of solar cell, and the front buffer layer and the back side buffer layer are located at
Different sides edge.
4. photovoltaic module as described in claim 1, it is characterised in that: the buffer layer is fixed on the surface；Preferably, institute
State buffer layer with a thickness of 200~400um.
5. photovoltaic module as described in claim 1, it is characterised in that: the buffer layer is in long strip and prolongs along the edge
It stretches or the buffer layer includes n interval setting and buffer disc corresponding with welding position, n is that solar cell single side surface is set
The welding quantity set.
6. photovoltaic module as claimed in claim 2, it is characterised in that: size of the buffer layer on welding extending direction is big
In or equal to size of the overlapping space on welding extending direction.
7. photovoltaic module as claimed in claim 2, it is characterised in that: the welding includes to weld with solar cell front electrode
First segment, the second segment that welds with the rear electrode of adjacent another solar cell and connect above-mentioned first segment and second
The changeover portion of section, the changeover portion is placed in the overlapping space, the width of the changeover portion be greater than the first segment and/
Or the width of the second segment；Preferably, the first segment and the second segment are overlapped in the overlapping space foreign minister.
8. photovoltaic module as described in claim 1, it is characterised in that: the buffer layer includes ethylene-vinyl acetate copolymer
EVA and/or polyolefin elastomer.
9. a kind of photovoltaic module, including several battery tandems, it is characterised in that: the battery tandem includes:
Several solar cells, the edge of adjacent two solar cell are mutually overlapping to form overlapping sky between adjacent two solar cell
Between；
Welding, for connecting adjacent two solar cell and by the overlapping space；
Buffer layer is set in the overlapping space and between adjacent two welding.
10. photovoltaic module as claimed in claim 9, it is characterised in that: the welding includes to weld with solar cell front electrode
The first segment that connects, the second segment welded with the rear electrode of adjacent another solar cell and it connect above-mentioned first segment and the
Two sections of changeover portion, the changeover portion are placed in the overlapping space, ruler of the buffer layer on cell thickness direction
It is very little to be greater than size of the changeover portion on cell thickness direction.
11. a kind of manufacturing method of photovoltaic module characterized by comprising
Buffer layer is set at the edge of solar battery surface, the surface is equipped with electrode；
Multiple solar cells are connected into bunchiness by welding, make the buffer layer between the surface and the welding.
12. method as claimed in claim 11, it is characterised in that: the method also includes:
The edge of adjacent solar cell in above-mentioned multiple solar cells is mutually overlapping, to be formed between adjacent two solar cell
Overlapping space.
13. method as claimed in claim 11, it is characterised in that: buffer layer packet is arranged in the edge in solar battery surface
It includes:
The first solar cell to be split is provided, first solar battery surface is equipped with electrode；
Cut-off rule is formed in first solar battery surface；
In first solar battery surface, buffer layer is set；
First solar cell is divided at least two cell strips along the cut-off rule, the cell strip includes along the battery
The buffer layer of long side arrangement.
14. method as claimed in claim 11, it is characterised in that: the buffer layer includes being set to the positive front of solar cell
Buffer layer and back side buffer layer set on back of solar cell, and the front buffer layer and the back side buffer layer are located at not
Ipsilateral penumbra, it is preferred that the buffer layer with a thickness of 200~400um, it is preferred that the buffer layer is in welding extending direction
On size be greater than or equal to size of the overlapping space on welding extending direction.
15. method as claimed in claim 11, it is characterised in that: the buffer layer is in long strip；Or the buffer layer includes n
A interval setting and buffer disc corresponding with welding position, n are the welding quantity of solar cell single side surface setting.
16. method as claimed in claim 13, it is characterised in that: first solar cell has opposite and parallel first
Edge and second edge, first solar battery surface are equipped with the first strip buffer layer of the neighbouring first edge and neighbouring
Second strip buffer layer of the second edge, the cutting line is located at the first strip buffer layer and second strip is slow
It rushes between layer.
17. method as claimed in claim 12, it is characterised in that: the welding includes to weld with solar cell front electrode
First segment, the second segment welded with the rear electrode of adjacent another solar cell and it connect above-mentioned first segment and second segment
Changeover portion, the changeover portion is placed in the overlapping space, the width of the changeover portion be greater than the first segment and/or
The width of the second segment.
18. a kind of manufacturing method of photovoltaic module characterized by comprising
Buffer layer is set at the edge of solar battery surface, the surface is equipped with electrode；
Multiple solar cells are connected into bunchiness by welding, wherein by the edge of adjacent solar cell in the multiple solar cell
It is mutually overlapping, to form the overlapping space passed through for welding between adjacent two solar cell, it is located at the buffer layer described
In overlapping space and it is filled between adjacent two welding.
19. method as claimed in claim 18, it is characterised in that: the welding includes to weld with solar cell front electrode
First segment, the second segment welded with the rear electrode of adjacent another solar cell and it connect above-mentioned first segment and second segment
Changeover portion, the changeover portion is placed in the overlapping space, and size of the buffer layer on cell thickness direction is big
In size of the changeover portion on cell thickness direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171480.0A CN109786492A (en) | 2019-03-07 | 2019-03-07 | Photovoltaic module and its manufacturing method |
| PCT/CN2020/075813 WO2020177530A1 (en) | 2019-03-07 | 2020-02-19 | Photovoltaic assembly and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171480.0A CN109786492A (en) | 2019-03-07 | 2019-03-07 | Photovoltaic module and its manufacturing method |
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|---|---|
| CN109786492A true CN109786492A (en) | 2019-05-21 |
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ID=66487618
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| CN201910171480.0A Pending CN109786492A (en) | 2019-03-07 | 2019-03-07 | Photovoltaic module and its manufacturing method |
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| CN (1) | CN109786492A (en) |
Cited By (17)
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| CN110649118A (en) * | 2019-09-02 | 2020-01-03 | 中节能太阳能科技（镇江）有限公司 | Piece-splicing photovoltaic module |
| JP7483382B2 (en) | 2020-01-15 | 2024-05-15 | 株式会社カネカ | Solar Cell Module |
| JP2021111736A (en) * | 2020-01-15 | 2021-08-02 | 株式会社カネカ | Solar cell module |
| WO2021232723A1 (en) * | 2020-05-19 | 2021-11-25 | 泰州隆基乐叶光伏科技有限公司 | Back contact solar cell assembly |
| EP4047670A4 (en) * | 2020-06-24 | 2023-06-21 | Jingao Solar Co., Ltd. | Battery string, battery assembly, and fabrication apparatus and fabrication method for battery string |
| WO2021258576A1 (en) * | 2020-06-24 | 2021-12-30 | 晶澳太阳能有限公司 | Battery string, battery assembly, and fabrication apparatus and fabrication method for battery string |
| CN114078984A (en) * | 2020-08-11 | 2022-02-22 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
| CN112216757A (en) * | 2020-08-28 | 2021-01-12 | 晶澳（扬州）太阳能科技有限公司 | Series structure and series method of solar cells and cell module |
| CN114497253A (en) * | 2020-10-26 | 2022-05-13 | 苏州阿特斯阳光电力科技有限公司 | Alignment method for interconnection structural member of photovoltaic module and photovoltaic module |
| CN113178503A (en) * | 2021-04-23 | 2021-07-27 | 通威太阳能（合肥）有限公司 | Photovoltaic cell piece, welding strip fixing method, finished product assembly and preparation method thereof |
| CN113659031A (en) * | 2021-07-01 | 2021-11-16 | 合肥晶澳太阳能科技有限公司 | Solar cell string, photovoltaic module and preparation method thereof |
| CN114581446A (en) * | 2022-05-06 | 2022-06-03 | 浙江双元科技股份有限公司 | Battery core abnormity detection method and system of laminated battery |
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Address after: No. 199, Lushan Road, Suzhou hi tech Zone, Suzhou City, Jiangsu Province Applicant after: CSI Cells Co.,Ltd. Applicant after: Changshu Artes Sunshine Power Technology Co.,Ltd. Applicant after: Atlas sunshine Power Group Co.,Ltd. Address before: No. 199, Lushan Road, Suzhou hi tech Zone, Suzhou City, Jiangsu Province Applicant before: CSI Cells Co.,Ltd. Applicant before: Changshu Artes Sunshine Power Technology Co.,Ltd. Applicant before: CSI SOLAR POWER GROUP Co.,Ltd. |