CN206727080U - Back electrode, solar battery sheet and the half tone of cell piece - Google Patents
Back electrode, solar battery sheet and the half tone of cell piece Download PDFInfo
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- CN206727080U CN206727080U CN201720516460.9U CN201720516460U CN206727080U CN 206727080 U CN206727080 U CN 206727080U CN 201720516460 U CN201720516460 U CN 201720516460U CN 206727080 U CN206727080 U CN 206727080U
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- back electrode
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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
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Abstract
The utility model provides a kind of back electrode of cell piece, solar battery sheet and half tone, it is related to the manufacturing technology field of solar battery sheet, the back electrode of the cell piece, along the length direction of back electrode, two outer ends of back electrode are provided with and spread area, the width dimensions for spreading area are more than the width dimensions of back electrode middle part, when alleviating progress automatic welding using the back electrode, the position of welding and back electrode occurs to easily cause the technical problem of failure welding after offseting relatively, reach welding to occur to improve the technique effect of the welding quality of component after offseting relatively with back electrode.
Description
Technical field
The manufacturing technology field of solar battery sheet is the utility model is related to, more particularly, to a kind of back of the body of cell piece
Electrode, solar battery sheet and half tone.
Background technology
Environmental pollution and conventional fossil fuel are increasingly depleted, and in all sustainable energies, solar energy is undoubtedly
It is a kind of most cleaning, most universal and most potential alternative energy source.Photovoltaic power generation technology is most sustainable development desired characteristics
One of generation technology.At present, in all solar cells, silicon solar cell is to obtain a wide range of business promotion too
One of positive energy battery.
In current solar battery sheet, back electrode figure typically all uses the figure of rectangle.Utilizing solar-electricity
It is the positive electrode of back electrode and another cell piece that photovoltaic welding belt is welded on to a piece of cell piece during the piece assembling photovoltaic component of pond
On, it is connected in series so as to realize.After series connection, caused electric current is converged on back electrode after back of the body electric field is collected in cell piece, it
Exported by by welding.
At present in production technology, usually welding is welded on cell piece using automatic welding machine.Automatic welding machine exists
Positioning of taking pictures can be carried out during welding to cell piece, positioning is usually such cell piece middle part by the way of being aligned using center
The degree of accuracy of positioning is preferable, and the error at edge is relative can be big, therefore, often occurs welding after welding and has one relative to back electrode
Determine the shift phenomenon of angle, the offset at general edge can be more than the offset of middle part, and now, the welding of edge is normal
Back electrode can be deviateed and cause failure welding (such as rosin joint), so as to influence the power of component and reliability.
In view of this, it is special to propose the utility model.
Utility model content
First purpose of the present utility model is to provide a kind of back electrode of cell piece, to alleviate using of the prior art
When back electrode carries out automatic welding, the technology that failure welding occurs to easily cause after offseting relatively for the position of welding and back electrode is asked
Topic.
In order to realize above-mentioned purpose of the present utility model, spy uses following technical scheme：
A kind of back electrode of cell piece, along the length direction of back electrode, two outer ends of the back electrode, which are provided with, spreads area,
The width dimensions for spreading area are more than the width dimensions of the back electrode middle part.
Further, the area of spreading is trapezoidal back electrode section, and the trapezoidal back electrode section is close to cell piece edge side
Width dimensions be more than the trapezoidal width dimensions of the back electrode section away from cell piece edge side.
Further, the altitude range of the trapezoidal back electrode section is 5-20mm.
Further, the back electrode middle part is rectangle back electrode section；
The width dimensions of the rectangle back electrode section and the trapezoidal width of the back electrode section away from cell piece edge side
Size is identical；
Width dimensions of the trapezoidal back electrode section close to cell piece edge side are the width of the rectangle back electrode section
1.2-3 times of size.
Further, the back electrode is continuous structure back electrode；
Or, the back electrode is segmental structure back electrode.
Further, segments >=3 section of the segmental structure back electrode.
Compared with the prior art, the utility model has the advantages that：
Back electrode in the utility model is designed as being more than back electrode by will be close to the width dimensions of cell piece edge
The width dimensions of middle part, one will so be individually present at back electrode both ends and spread area, during welding, when welding and back of the body electricity
When pole has the relative skew of certain angle, the welding position of welding still can fall on the back electrode for spreading area, will not
Cause the failure welding problem such as rosin joint.
Further, since therefore, it can't simply be increased using the design structure for increasing width dimensions at the both ends of back electrode
The cost of too many back electrode.And when production designs back electrode, it only need to slightly reduce the length of back electrode, the area of back electrode
It can be just consistent substantially with original rectangular design, so as to avoid the increase of back electrode cost.
Second purpose of the present utility model is to provide solar battery sheet, welded using the solar battery sheet,
The welding quality of component can be improved after the relative skew of generation of welding and back electrode.
A kind of solar battery sheet, include the back electrode of at least two above-mentioned cell pieces.
Further, the bar number of the back electrode of the cell piece is 2-6 bars.
Further, along the length direction of the back electrode, the edge model of the outermost end of the back electrode apart from cell piece
Enclose for 5-30mm.
The solar battery sheet includes above-mentioned back electrode, therefore, has whole beneficial effects of above-mentioned back electrode.Utilize this
Solar battery sheet is welded, when the end of welding afterbody and back electrode has less angle skew, due to adding
The width dimensions at back electrode both ends, that is, add and spread area, therefore welding still can be welded on spreading for back electrode end
In area, so as to effectively prevent the generation of failure welding, and then improve component welding quality and the operation of component later stage can
By degree.
3rd purpose of the present utility model is to provide a kind of half tone, can be printed using the half tone and prepare above-mentioned solar energy
Cell piece.
A kind of half tone, the half tone are provided with the printing zone to match with the back electrode on above-mentioned solar battery sheet.
The solar battery sheet for including above-mentioned back electrode can be prepared using the half tone, its advantage is no longer entered herein
Row repeats.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the back electrode for the cell piece that the utility model embodiment one provides；
Fig. 2 is second of structural representation of the back electrode for the cell piece that the utility model embodiment one provides；
Fig. 3 is the third structural representation of the back electrode for the cell piece that the utility model embodiment one provides；
Fig. 4 is the 4th kind of structural representation of the back electrode for the cell piece that the utility model embodiment one provides；
Fig. 5 is a kind of structural representation for the solar battery sheet that the utility model embodiment two provides；
Fig. 6 is another structural representation for the solar battery sheet that the utility model embodiment two provides；
Fig. 7 is the structure for the half tone corresponding with solar battery sheet shown in Fig. 5 that the utility model embodiment three provides
Schematic diagram.
Icon：10- back electrodes；11- spreads area；The trapezoidal back electrode sections of 111-；112- rectangle back electrode sections；20- is too
Positive energy cell piece；30- half tones；31- half tone frameworks；32- silk screens.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on can understanding as the case may be
State concrete meaning of the term in the utility model.
Embodiment 1
The present embodiment is a kind of back electrode 10 of cell piece, along the length direction of back electrode 10, two outer ends of back electrode 10
Portion is provided with and spreads area 11, and the width dimensions for spreading area 11 are more than the width dimensions of the middle part of back electrode 10.
Back electrode 10 in the present embodiment is designed as being more than back electrode by will be close to the width dimensions of cell piece edge
The width dimensions of 10 middle parts, one will so be individually present at the both ends of back electrode 10 and spread area 11, during welding, work as welding
When the relative skew of certain angle be present with back electrode 10, the welding position of welding, which still can fall, is spreading the back of the body electricity in area 11
On pole 10, the failure weldings such as rosin joint will not be caused.
Further, since therefore, it can't simply be increased using the design structure for increasing width dimensions at the both ends of back electrode 10
Add the cost of too many back electrode 10.And the length of back electrode 10 only need to be slightly reduced, the area of back electrode 10 just substantially can be with
It is consistent with original rectangular design, so as to avoid the increase of the cost of back electrode 10.
As long as back electrode 10 is in broad-ruler of the width dimensions close to cell piece edge more than the middle part of back electrode 10
It is very little, thus it can spread area 11 for one close to each self-forming in two outer ends at cell piece edge in back electrode 10.This spreads area
11 shape can be configured as needed, as long as meeting the relative offset distance of welding and back electrode 10.Certainly, weld
The offset distance of band and back electrode 10 also should be the normal excursions distance during production, not consider then for improper skew
Inside.
As shown in figure 1, the shape for spreading area 11 can be a rectangular configuration.Spread area 11 and the middle part of back electrode 10
It is connected, rectangular configuration is greater than the width dimensions of the middle part of back electrode 10 in the size of the width of back electrode 10.Welding
When, due to the deviation of positioning precision, the both ends of back electrode 10 and welding can have certain angle, and therefore, welding can deviate the back of the body
Track where electrode 10.Area 11 is spreaded by one rectangular configuration of setting, when welding is in the middle part of back electrode 10 and the back of the body
After electrode 10 welds, even if the afterbody of welding in the presence of slight skew, can also be welded on spreading in area 11 for rectangular configuration, so as to
It ensure that welding quality.
Fig. 2 shows second of structure of back electrode 10.The difference of the structure of back electrode 10 and structure shown in Fig. 1 exists
In the area 11 of spreading in Fig. 2 is a sector structure.Because the skew between welding and back electrode 10 always has certain angle,
Area 11 is spreaded using rectangular configuration, the cost for spreading area 11 can be increased, therefore, area 11 can will be spreaded and be designed as along back electrode
The shape that 10 length direction is outwards gradually widened, in order to save the processing cost of back electrode 10.
The third structure of back electrode 10 is illustrated in figure 3, it is trapezoidal back electrode section 111 to spread area 11, trapezoidal back electrode
111 width dimensions close to cell piece edge side of section are more than trapezoidal width of the back electrode section 111 away from cell piece edge side
Size.
Wherein, the trapezium structure of trapezoidal back electrode section 111 is isosceles trapezoid, short transverse and the back electrode 10 of isosceles trapezoid
Length direction it is consistent.Using isosceles trapezoid, certain welding space can be reserved in the both sides of back electrode 10.
Area 11 of spreading in the structure of back electrode 10 uses trapezium structure, and trapezium structure spreads area 11 with shown in Fig. 2
Sector spreads all advantages in area 11, and is easy to fabricate.
The altitude range of trapezoidal back electrode section 111 is 5-20mm.
The height of trapezoidal back electrode section 111 refers to the size of length direction of the trapezoidal back electrode section 111 along back electrode 10.Ladder
The long manufacturing cost that can increase back electrode 10 of height of shape back electrode section 111, the height dimension of trapezoidal back electrode section 111 are too small
Do not reach the welding effect after welding skew again, therefore, counted according to actual production, when the height of trapezoidal back electrode section 111 is
During 5-20mm, the welding of more than 98% skew can be made have good welding with back electrode 10 while manufacturing cost is reduced
Effect.
With continued reference to Fig. 3, the middle part of back electrode 10 is rectangle back electrode section 112；The broad-ruler of rectangle back electrode section 112
It is very little identical with width dimensions of the trapezoidal back electrode section 111 away from cell piece edge side；Trapezoidal back electrode section 111 is close to cell piece
The width dimensions of edge side are 1.2-3 times of the width dimensions of rectangle back electrode section 112.
The middle part of back electrode 10 is rectangle back electrode section 112, is easy to fabricate, and be easy to manufacture corresponding half tone.
The width dimensions of rectangle back electrode section 112 and trapezoidal broad-ruler of the back electrode section 111 away from cell piece edge side
It is very little identical.Identical size is set to ensure the connecting of rectangle back electrode section 112 and trapezoidal back electrode section 111.It is if trapezoidal
Width dimensions of the back electrode section 111 away from cell piece edge side are larger, can increase the processing cost of trapezoidal back electrode section 111；
If width dimensions of the trapezoidal back electrode section 111 away from cell piece edge side are too small, it is possible to cause welding to occur after welding empty
The problems such as weldering.
Width dimensions of the trapezoidal back electrode 10 close to cell piece edge side are the width dimensions of rectangle back electrode 10
1.2-3 again.When width dimensions of the trapezoidal back electrode 10 close to cell piece edge side are less than the width dimensions of rectangle back electrode 10
1.2 times when, do not reach anti-bias effect；When width dimensions of the trapezoidal back electrode 10 close to cell piece edge side are carried on the back more than rectangle
At 3 times of the width dimensions of electrode 10, the manufacturing cost of trapezoidal back electrode section 111 can be increased again.
The back electrode 10 of cell piece as Figure 1-3, wherein, back electrode 10 is continuous structure back electrode 10.Except this it
Outside, back electrode 10 can be other structure types.
As shown in figure 4, back electrode 10 is segmental structure back electrode 10.
Segmental structure back electrode 10 is set, the processing cost of back electrode 10 can be reduced.
The segments of segmental structure back electrode 10 could be arranged to multistage, it is preferable that the segmentation of segmental structure back electrode 10
>=3 sections of number.
The center section of segmental structure back electrode 10 remains as rectangle back electrode section 112, and trapezoidal back electrode section 111 is thrown away and set
It is placed in two outer ends of whole back electrode 10.
The segments of segmental structure back electrode 10 should not be excessive, is advisable with 3-8 sections.In the present embodiment, segmental structure back of the body electricity
The segments of pole 10 is 6 sections.
Embodiment 2
As shown in figure 5, a kind of solar battery sheet 20 of the present embodiment, including the battery that at least two embodiments 1 provide
The back electrode 10 of piece.
The solar battery sheet 20 includes the back electrode 10 in embodiment one, therefore, has the whole of above-mentioned back electrode 10
Beneficial effect.Welded using the solar battery sheet 20, when the end of welding afterbody and back electrode 10 has less angle
During degree skew, due to adding the width dimensions at the both ends of back electrode 10, that is, add and spread area 11, therefore welding still can be by
Spreading in area 11 for the end of back electrode 10 is welded on, so as to effectively prevent the generation of failure welding, and then improves component
Welding quality and the reliability of component later stage operation.
Wherein, the quantity of back electrode 10 could be arranged to a plurality of.Preferably, the bar number of the back electrode 10 of cell piece is 2-6
Bar.
Along the length direction of back electrode 10, the outermost end of back electrode 10 is 5-30mm apart from the edge extent of cell piece.
When the outermost end of back electrode 10 is less than 5mm apart from the edge of cell piece, in welding because the tin that overflows easily causes
Short circuit；When the outermost end of back electrode 10 is more than 30mm apart from the edge of cell piece, it can influence to carry on the back the collection of electric current in electric field, and then
Influence the power of component.
When using a plurality of back electrode 10, it is be arranged in parallel between the back electrode 10 of a plurality of cell piece.
Fig. 6 shows another structure of solar battery sheet 20.The back of the body in the solar battery sheet 20 of structure shown in Fig. 6
Electrode 10 is using segmental structure back electrode 10.
Embodiment 3
As shown in fig. 7, the present embodiment is a kind of half tone 30, the half tone 30 is provided with and the solar cell in embodiment two
The printing zone that back electrode 10 on piece 20 matches.The solar cell in embodiment two can be printed out using the half tone 30
The back electrode 10 of piece 20.
Above-mentioned half tone 30 includes half tone framework 31 and the silk screen 32 being fixed in half tone framework 31, and silk screen 32 is provided with and reality
Apply the figure that the back electrode 10 on the solar battery sheet 20 in example two matches.Wherein, half tone framework 31 is fixed hollow
Aluminium frame, fixed solid metal frame or movable framework, silk screen 32 predominantly using polyethylene filament as the Teduolong wire net of base material or
Woven wire using stainless steel wire as base material.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
- A kind of 1. back electrode of cell piece, it is characterised in that along the length direction of back electrode (10), the two of the back electrode (10) Outer end, which is provided with, spreads area (11), and the width dimensions for spreading area (11) are more than the width of the back electrode (10) middle part Size.
- 2. the back electrode of cell piece according to claim 1, it is characterised in that the area (11) of spreading is trapezoidal back electrode Section (111), width dimensions of the trapezoidal back electrode section (111) close to cell piece edge side are more than the trapezoidal back electrode section (111) width dimensions away from cell piece edge side.
- 3. the back electrode of cell piece according to claim 2, it is characterised in that the height of the trapezoidal back electrode section (111) Degree scope is 5-20mm.
- 4. the back electrode of cell piece according to claim 3, it is characterised in that back electrode (10) middle part is square Shape back electrode section (112)；The width dimensions of the rectangle back electrode section (112) are with the trapezoidal back electrode section (111) away from cell piece edge side Width dimensions it is identical；Width dimensions of the trapezoidal back electrode section (111) close to cell piece edge side are the rectangle back electrode sections (112) 1.2-3 times of width dimensions.
- 5. the back electrode of the cell piece according to claim any one of 1-4, it is characterised in that the back electrode (10) is Continuous structure back electrode；Or, the back electrode (10) is segmental structure back electrode.
- 6. the back electrode of cell piece according to claim 5, it is characterised in that the segments of the segmental structure back electrode >= 3 sections.
- 7. a kind of solar battery sheet, it is characterised in that including the cell piece described at least two claim any one of 1-6 Back electrode (10).
- 8. solar battery sheet according to claim 7, it is characterised in that the bar number of the back electrode (10) is 2-6 Bar.
- 9. solar battery sheet according to claim 7, it is characterised in that along the length direction of the back electrode (10), The outermost end of the back electrode (10) is 5-30mm apart from the edge extent of cell piece.
- A kind of 10. half tone, it is characterised in that the half tone (30) be provided with described in any one of claim 7-9 too The printing zone that back electrode (10) on positive energy cell piece matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720516460.9U CN206727080U (en) | 2017-05-10 | 2017-05-10 | Back electrode, solar battery sheet and the half tone of cell piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720516460.9U CN206727080U (en) | 2017-05-10 | 2017-05-10 | Back electrode, solar battery sheet and the half tone of cell piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206727080U true CN206727080U (en) | 2017-12-08 |
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ID=60510415
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720516460.9U Active CN206727080U (en) | 2017-05-10 | 2017-05-10 | Back electrode, solar battery sheet and the half tone of cell piece |
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| Country | Link |
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| CN (1) | CN206727080U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110718598A (en) * | 2019-10-29 | 2020-01-21 | 无锡尚德太阳能电力有限公司 | Battery piece capable of preventing back electrodes at front end and back end from shifting after welding |
-
2017
- 2017-05-10 CN CN201720516460.9U patent/CN206727080U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110718598A (en) * | 2019-10-29 | 2020-01-21 | 无锡尚德太阳能电力有限公司 | Battery piece capable of preventing back electrodes at front end and back end from shifting after welding |
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