CN208923167U - Solar battery foreboard - Google Patents
Solar battery foreboard Download PDFInfo
- Publication number
- CN208923167U CN208923167U CN201821561620.2U CN201821561620U CN208923167U CN 208923167 U CN208923167 U CN 208923167U CN 201821561620 U CN201821561620 U CN 201821561620U CN 208923167 U CN208923167 U CN 208923167U
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- Prior art keywords
- solar battery
- layer
- busbar
- grid line
- foreboard
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- 238000002955 isolation Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 abstract description 37
- 238000004519 manufacturing process Methods 0.000 abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 15
- 239000000463 material Substances 0.000 description 15
- 239000011889 copper foil Substances 0.000 description 13
- 229920002120 photoresistant polymer Polymers 0.000 description 12
- -1 polyethylene terephthalate Polymers 0.000 description 10
- 238000003475 lamination Methods 0.000 description 8
- 239000002131 composite material Substances 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 4
- 239000011112 polyethylene naphthalate Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 229920002397 thermoplastic olefin Polymers 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010329 laser etching Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- 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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- Photovoltaic Devices (AREA)
Abstract
The utility model provides a kind of solar battery foreboard.The solar battery foreboard includes the basal layer, the adhesion layer and the confluence layer.The adhesion layer is set to the surface of the basal layer side, and covers the basal layer.The confluence layer is set to the adhesion layer backwards to the surface of the basal layer, for collecting the charge of solar battery cathode.In the utility model, the charge of solar battery cathode is collected by the way that the confluence layer is arranged in the solar battery foreboard, realizes the series connection of solar battery sheet.Also, in the actual production process, it is only necessary to which the solar battery foreboard is fit together with solar battery sheet, the series connection of solar battery sheet can be completed, simplify the tandem process of solar battery sheet by simply fitting tandem process.
Description
Technical field
The utility model relates to photovoltaic technology field more particularly to a kind of solar battery foreboards.
Background technique
With the worsening shortages of global energy, also increasingly it is taken seriously for the utilization of solar energy.Photovoltaic group
The regional scope of part application is more and more wider, is related to multiple industries and field.
For single solar battery sheet due to being limited by own dimensions, output voltage is too low, tends not to meet and actually answer
With.Therefore, it is generated in technique in real time in photovoltaic products, needs to connect multiple solar battery sheets, actually answered with meeting
It is needed with voltage in the process.
Utility model content
Based on this, it is necessary to which, for the problem that single solar battery sheet output voltage is too small, providing one kind can be realized
The concatenated solar battery foreboard of solar battery sheet.
The utility model embodiment provides a kind of solar battery foreboard, comprising:
Basal layer；
Adhesion layer is set to the surface of the basal layer side, and covers the basal layer；And
Converge layer, is set to the adhesion layer backwards to the surface of the basal layer, for collecting solar battery cathode
Charge.
In some embodiments provided by the utility model, the confluence layer includes multiple bus structure units, and the remittance
Flow structure unit and the solar battery correspond.
In some embodiments provided by the utility model, the bus structure unit includes:
Busbar；And
A plurality of grid line is set to the side of the busbar, and vertical with the busbar connect.
In some embodiments provided by the utility model, the busbar is identical as the thickness of the grid line, is 30-50
μm；The width of the busbar is 1.5-4.5 ㎜, and the width of the grid line is 100-300 μm.
In some embodiments provided by the utility model, the solar battery foreboard further includes isolation structure, is set to
The confluence layer covers the busbar backwards to the surface of the adhesion layer.
In some embodiments provided by the utility model, the bus structure unit further includes at least one series terminal,
It is set to side of the busbar far from a plurality of grid line, and is connect with the busbar.
In some embodiments provided by the utility model, the solar battery foreboard further includes conductive enhancement layer, with institute
The setting of isolation structure same layer is stated, is set to the grid line backwards to the surface of the adhesion layer, and cover the grid line.
To sum up, the utility model provides a kind of solar battery foreboard.The solar battery foreboard includes the base
Bottom, the adhesion layer and the confluence layer.The adhesion layer is set to the surface of the basal layer side, and described in covering
Basal layer.The confluence layer is set to the adhesion layer backwards to the surface of the basal layer, for collecting solar battery cathode
Charge.In the utility model, by the way that the confluence layer is arranged in the solar battery foreboard, it is negative to collect solar battery
The charge of pole realizes the series connection of solar battery sheet.Also, in the actual production process, it is only necessary to simple fitting series connection work
The solar battery foreboard is fit together with solar battery sheet, the series connection of solar battery sheet can be completed by skill, letter
The tandem process of solar battery sheet is changed.
Detailed description of the invention
Fig. 1 is a kind of planar structure schematic diagram of solar battery foreboard provided by the embodiment of the utility model；
Fig. 2 is a kind of the schematic diagram of the section structure of solar cell foreboard provided by the embodiment of the utility model；
Fig. 3 is a kind of process flow diagram for making solar cell foreboard provided by the embodiment of the utility model；
Fig. 4 is a kind of process flow diagram for making confluence layer provided by the embodiment of the utility model；
Fig. 5 is the process flow diagram of another production solar cell foreboard provided by the embodiment of the utility model.
Drawing reference numeral explanation:
10 solar battery foreboards
100 basal layers
200 adhesion layers
300 confluence layers
310 bus structure units
311 busbars
312 grid lines
313 series terminals
400 isolation structures
500 conductive enhancement layers
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant
Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field
Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs
The limitation for the specific implementation opened.
Referring to Figure 1 and Fig. 2, the utility model embodiment provide a kind of solar battery foreboard 10, the solar energy
Battery foreboard 10 includes: basal layer 100, adhesion layer 200 and confluence layer 300.
In the present embodiment, the adhesion layer 200 is set to the surface of 100 side of basal layer, and covers the substrate
Layer 100.The confluence layer 300 is set to the adhesion layer 200 backwards to the surface of the basal layer 100, for collecting solar energy
The charge of battery cathode.
It is appreciated that the basal layer 100 is made of transparent film layer materials, it is general that polyester material is selected to make the base
Bottom 100.The polyester material is polyethylene terephthalate (Polyethylene Terephthalate, PET), gathers
Mutual-phenenyl two acid bromide two alcohol ester (Polybutylene Terephthalate, PBT), polypropylene terephthalate
(Polypropylene Terephthalate, PTT), polypropylene (Polypropylene, PP), polyethylene naphthalate
One of (Polyethylene Naphthalate, PEN) and polyamide (Polyamide, PA) or a variety of.In actual production
In technical process, can also processing be modified to the polyester material, make it have weather resistance (such as light shine, cold-hot
Property, weather resistance, corrosion resistance, resistance to bacteria etc.).
It is appreciated that the adhesion layer 200 uses tensile strength big and and the good thermoplastic resin material system of water resistance
At.In the present embodiment, the adhesion layer 200 uses thermoplastic polyolefin-like (Thermoplastic Polyolefin, TPO material
Material) production.The basal layer 100 is fit together with the adhesion layer 200 by heat lamination process, at the heated lamination
The heating temperature of reason is 100~110 DEG C, and heating time is 10~200min.
It is appreciated that the cathode of the solar battery foreboard 10 and solar battery sheet directly fits, pass through the remittance
Fluid layer 300 can directly collect the charge on the solar battery sheet cathode, be not required to again through silk-screen printing or wire drawing
Mode collect the charge on the solar battery sheet cathode, simplify the tandem process of solar battery sheet.
In some embodiments provided by the utility model, the confluence layer 300 includes multiple bus structure units 310, and
The bus structure unit 310 is corresponded with the solar battery.In the present embodiment, the bus structure for collect with
Corresponding solar battery sheet cathode charge.
In some embodiments provided by the utility model, the bus structure unit 310 includes busbar 311 and a plurality of grid
Line 312.The a plurality of grid line 312 is set to the side of the busbar 311, and vertical with the busbar 311 connect.
It is appreciated that the busbar 311 extends along the length direction of the solar battery sheet, 312 edge of grid line
Perpendicular to the directional spreding of busbar 311.It, can be with when the grid line 312 is along directional spreding perpendicular to the busbar 311
The length for reducing each grid line 312, reduces the resistance of each grid line 312 accordingly, to be conducive to increase
Electric current output, the performance of the solar battery sheet after improving encapsulation.
In some embodiments provided by the utility model, the busbar 311 is identical as the thickness of the grid line 312,
It is 30-50 μm；The width of the busbar 311 is 1.5-4.5 ㎜, and the width of the grid line 312 is 100-300 μm.This implementation
In example, the busbar 311, the grid line 312 and the series terminal are formed by a photoetching process, are conducive to simplify
The process flow of the solar battery foreboard 10.The busbar 311, with a thickness of 30-50 μm, both may be used with the grid line 312
To increase the cross-sectional area of the busbar 311 and the grid line 312, to reduce the busbar 311 and the grid line 312
Resistance will not also influence the performance of solar battery because thickness is too big.The width of the busbar 311 be 1.5-4.5 ㎜ with
And the width of the grid line 312 be 100-300 μm when, it is ensured that the solar energy foreboard light transmittance with higher, simultaneously
Guarantee that the resistance of the busbar 311 and the grid line 312 will not be excessive, the busbar 311 and described can also be prevented
Grid line 312 breaks, so that the performance that rear solar battery is made described in guaranteeing is in optimum range.In addition, 312 He of grid line
The busbar 311 is generally easily obtained using copper, magnesium alloy etc., electric conductivity is good and the lower metal production of price.
In some embodiments provided by the utility model, the bus structure unit 310 further includes at least one series connection end
Son 313, the series terminal 313 are set to side of the busbar 311 far from a plurality of grid line 312, and with the remittance
Item 311 is flowed to connect.
It is appreciated that the series terminal 313 is mainly used for as pad, in subsequent solar battery sheet series connection work
In skill, the anode of the cathode of corresponding solar battery sheet and next solar battery sheet is connected by laser welding
It connects.In addition, the series terminal 313 can also be set to the same side of the busbar 311 with the grid line 312.
In the present embodiment, the confluence layer 300 is formed by heat lamination process and laser etching process, forms institute
The process for stating confluence layer 300 specifically includes: firstly, by heat lamination process, the copper foil with a thickness of 30-50 μm being combined to institute
Side of the adhesion layer 200 backwards to the basal layer 100 is stated, composite copper foil is formed.One layer is coated on the surface of the composite copper foil
Photoresist.Secondly, covered on the photoresist with the mask plate that matches of confluence layer 300, then using yellow light into
Row irradiation solidifies the photoresist with confluence 300 corresponding part of layer.Again, it after completing photoresist solidification process, adopts
There is no cured photoresist with the washed with saline solution of alkalinity, makes that the part copper foil being etched away is needed to expose.Finally, using
Hydrochloric acid and hydrogen peroxide mixed solution perform etching the composite copper foil, do not have the part of photoresist can be molten by acid in etching process
Liquid etches away, and part copper foil corresponding with the busbar 311, the grid line 312 and the series terminal 313 then can
It remains, forms the confluence layer 300 including the busbar 311, the grid line 312 and the series terminal 313.
Refer to Fig. 2, in some embodiments provided by the utility model, the solar battery foreboard 10 further includes isolation
Structure 400, the isolation structure 400 are set to the confluence layer 300 backwards to the surface of the adhesion layer 200, and described in covering
Busbar 311.In the present embodiment, two adjacent solar batteries are dielectrically separated from by the isolation structure 400, are prevented
Short circuit only occurs between two adjacent solar battery sheets.In the present embodiment, using isolation junction described in non-conductive printing ink to manufacture
It is the production for completing the isolation structure 400 by dry process when structure 400, is conducive to simplify manufacturing process, shortens technique week
Phase, while the advantages that also have both environmental protection.In addition, the isolation structure 400 can also use other nonconducting film material systems
At.
In some embodiments provided by the utility model, the solar battery foreboard 10 further includes conductive enhancement layer 500,
It is arranged with 400 same layer of isolation structure, is set to the grid line 312 backwards to the surface of the adhesion layer 200, and described in covering
Grid line 312.In actual process, the conductive enhancement layer 500 is generally made of silver.It is appreciated that charge shape in the conductor
When mobile at electric current, actually only moved in conductive surface, therefore good in one layer of electric conductivity of the upper plating of grid line 312
Good silver, can enhance the electric conductivity of the grid line 312, reduce the internal resistance and resistivity of the grid line 312.Silver has and is not easy simultaneously
The advantages that aoxidizing, be corrosion-resistant, therefore can protect the grid line 312 in subsequent manufacturing processes from aoxidizing or/and corroding.
In some embodiments provided by the utility model, the conductive enhancement layer 500 with a thickness of 10-25 μm.When described
Conductive enhancement layer 500 with a thickness of 10-25 μm when, the conductive capability of the grid line 312 both can be enhanced, will not also expend too many
The production conductive layer raw material, saved cost of manufacture.
Conceived based on same utility model, refers to Fig. 3, the utility model embodiment additionally provides a kind of solar battery
The production method of foreboard, comprising:
Step S110 forms adhesion layer 200 on the surface of 100 side of basal layer, and the adhesion layer 200 covers
The basal layer 100；
Step S120 forms confluence layer 300 backwards to the surface of the basal layer 100 in the adhesion layer 200.
The basal layer 100 is made of transparent film layer materials, general that polyester material is selected to make the basal layer 100.
The polyester material is one of PET, PBT, PTT, PP, PEN and PA or a variety of.In actual production technical process, can also
Processing is modified to the polyester material, makes it have weather resistance (such as light shine, cold-resistant hot, weather resistance, corrosion resistant
Corrosion, resistance to bacteria etc.).
It is appreciated that the adhesion layer 200 uses tensile strength big and and the good thermoplastic resin material system of water resistance
At.In the present embodiment, the adhesion layer 200 is made of TPO material.The basal layer 100 is with the adhesion layer 200 by adding
Hot lamination process fits together, and the heating temperature of heated lamination processing is 100~110 DEG C, and heating time is 10~
200min。
Refer to Fig. 4, in some embodiments provided by the utility model, the step 120 includes:
Copper foil is combined to the adhesion layer 200 backwards to the table of the basal layer 100 by heat pressing process by step S121
Face；
Step S122 forms multiple bus structure units 310 by etching technics, wherein each bus structure list
Member 310 includes a busbar 311, multiple grid lines 312 and at least one series terminal 313, the grid line 312 and the string
Connection terminal 313 is respectively arranged at the two sides of the busbar 311, connect with the busbar 311, and the grid line 312
It is mutually perpendicular to the busbar 311.
It is appreciated that the busbar 311 extends along the length direction of the solar battery sheet, 312 edge of grid line
Perpendicular to the directional spreding of busbar 311.It, can be with when the grid line 312 is along directional spreding perpendicular to the busbar 311
The length for reducing each grid line 312, reduces the resistance of each grid line 312 accordingly, to be conducive to increase
Electric current output, the performance of the solar battery sheet after improving encapsulation.
In some embodiments provided by the utility model, the busbar 311 is identical as the thickness of the grid line 312,
It is 30-50 μm；The width of the busbar 311 is 1.5-4.5 ㎜, and the width of the grid line 312 is 100-300 μm.This implementation
In example, the busbar 311, the grid line 312 and the series terminal 313 are formed by a photoetching process, are conducive to
Simplify the process flow of the solar battery foreboard 10.The busbar 311 with the grid line 312 with a thickness of 30-50 μm,
Both the cross-sectional area of the busbar 311 and the grid line 312 can have been increased, to reduce the busbar 311 and the grid line
312 resistance will not also influence the performance of solar cell module because thickness is too big.The width of the busbar 311 is
When the width of 1.5-4.5 ㎜ and the grid line 312 is 100-300 μm, it is ensured that the solar energy foreboard is with higher
Light transmittance, while the resistance of the busbar 311 and the grid line 312 will not be excessive, can also prevent the busbar 311
Break with the grid line 312, so that the performance that rear solar battery is made described in guaranteeing is in optimum range.In addition, the grid
Line 312 and the busbar 311 generally use copper, magnesium alloy etc. easily to obtain, electric conductivity is good and the lower made of metal of price
Make.
In the present embodiment, the confluence layer 300 is formed by heat lamination process and laser etching process, forms institute
The process for stating confluence layer 300 specifically includes:
By heat lamination process, the copper foil with a thickness of 30-50 μm is combined to the adhesion layer 200 backwards to the substrate
The side of layer 100 forms composite copper foil；
A layer photoresist is coated on the surface of the composite copper foil；
The mask plate to match with the confluence layer 300 is covered on the photoresist, is then shone using yellow light
It penetrates, the photoresist with confluence 300 corresponding part of layer is solidified；
After completing photoresist solidification process, the washed with saline solution using alkalinity does not have cured photoresist, makes to need to be carved
The part copper foil of eating away exposes；
The composite copper foil is performed etching using hydrochloric acid and hydrogen peroxide mixed solution, does not have photoresist in etching process
Part can be etched away by acid solution, and corresponding with the busbar 311, the grid line 312 and the series terminal 313
Part copper foil can then remain, and form the remittance including the busbar 311, the grid line 312 and the series terminal 313
Fluid layer 300.
Refer to Fig. 5, in some embodiments provided by the utility model, the production method further include:
Step S130, forms isolation structure 400, and the isolation structure 400 is located at the confluence layer 300 and sticks backwards to described
The side of layer 200, and cover the busbar 311.
In the present embodiment, two adjacent solar batteries are dielectrically separated from by the isolation structure 400, are prevented
Short circuit occurs between two adjacent solar battery sheets.In the present embodiment, using isolation structure described in non-conductive printing ink to manufacture
It is the production for completing the isolation structure 400 by dry process when 400, is conducive to simplify manufacturing process, shortens technique week
Phase, while the advantages that also have both environmental protection.In addition, the isolation structure 400 can also use other nonconducting film material systems
At.
In some embodiments provided by the utility model, the production method further include:
Step S140 forms conductive enhancement layer 500, the conductive enhancement layer 500 and the isolation junction by electroplating technology
The setting of 400 same layer of structure positioned at the confluence layer 300 backwards to the surface of the adhesion layer 200, and covers the grid line 312.
In some embodiments provided by the utility model, the solar battery foreboard 10 further includes conductive enhancement layer 500,
It is arranged with 400 same layer of isolation structure, is set to the grid line 312 backwards to the surface of the adhesion layer 200, and described in covering
Grid line 312.In actual process, the conductive enhancement layer 500 is generally made of silver.It is appreciated that charge shape in the conductor
When mobile at electric current, actually only moved in conductive surface, therefore good in one layer of electric conductivity of the upper plating of grid line 312
Good silver, can enhance the electric conductivity of the grid line 312, reduce the internal resistance and resistivity of the grid line 312.Silver has and is not easy simultaneously
The advantages that aoxidizing, be corrosion-resistant, therefore can protect the grid line 312 in subsequent manufacturing processes from aoxidizing or/and corroding.
In some embodiments provided by the utility model, the conductive enhancement layer 500 with a thickness of 10-25 μm.When described
Conductive enhancement layer 500 with a thickness of 10-25 μm when, the conductive capability of the grid line 312 both can be enhanced, will not also expend too many
The production conductive layer raw material, saved cost of manufacture.
To sum up, the utility model provides a kind of solar battery foreboard.The solar battery foreboard 10 includes described
Basal layer 100, the adhesion layer 200 and the confluence layer 300.The adhesion layer 200 is set to 100 side of basal layer
Surface, and cover the basal layer 100.The confluence layer 300 is set to the adhesion layer 200 backwards to the basal layer 100
Surface, for collecting the charge of solar battery cathode.In the utility model, by the solar battery foreboard 10
The charge that the confluence layer 300 collects solar battery cathode is set, realizes the series connection of solar battery sheet.Also, in reality
In production process, it is only necessary to which the solar battery foreboard is fitted in by simply fitting tandem process with solar battery sheet
Together, the series connection that solar battery sheet can be completed simplifies the tandem process of solar battery sheet.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (8)
1. a kind of solar battery foreboard characterized by comprising
Basal layer (100)；
Adhesion layer (200) is set to the surface of the basal layer (100) side, and covers the basal layer (100)；And
Converge layer (300), the surface of the adhesion layer (200) backwards to the basal layer (100) is set to, for collecting solar energy
The charge of battery cathode.
2. solar battery foreboard as described in claim 1, which is characterized in that the confluence layer (300) includes multiple confluences
Structural unit (310), and the bus structure unit (310) and the solar battery correspond.
3. solar battery foreboard as claimed in claim 2, which is characterized in that the bus structure unit (310) includes:
Busbar (311)；And
A plurality of grid line (312) is set to the side of the busbar (311), and vertical with the busbar (311) connect.
4. solar battery foreboard as claimed in claim 3, which is characterized in that the busbar (311) and the grid line
(312) thickness is identical, is 30-50 μm；The width of the busbar (311) is 1.5-4.5 ㎜, the grid line (312)
Width is 100-300 μm.
5. solar battery foreboard as claimed in claim 3, which is characterized in that the bus structure unit (310) further includes
At least one series terminal (313), be set to the busbar (311) far from a plurality of grid line (312) side, and with institute
State busbar (311) connection.
6. solar battery foreboard as claimed in claim 3, which is characterized in that further include isolation structure (400), be set to institute
Confluence layer (300) is stated backwards to the surface of the adhesion layer (200), and covers the busbar (311).
7. solar battery foreboard as claimed in claim 6, which is characterized in that it further include conductive enhancement layer (500), and it is described
The setting of isolation structure (400) same layer is set to the surface of the grid line (312) backwards to the adhesion layer (200), and described in covering
Grid line (312).
8. solar battery foreboard as claimed in claim 7, which is characterized in that the conductive enhancement layer (500) with a thickness of
10-25μm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821561620.2U CN208923167U (en) | 2018-09-20 | 2018-09-20 | Solar battery foreboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821561620.2U CN208923167U (en) | 2018-09-20 | 2018-09-20 | Solar battery foreboard |
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| Publication Number | Publication Date |
|---|---|
| CN208923167U true CN208923167U (en) | 2019-05-31 |
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ID=66706879
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|---|---|---|---|
| CN201821561620.2U Expired - Fee Related CN208923167U (en) | 2018-09-20 | 2018-09-20 | Solar battery foreboard |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212052A (en) * | 2019-07-23 | 2019-09-06 | 绵阳金能移动能源有限公司 | Block water foreboard and its processing method of integrated solar cell interconnection |
-
2018
- 2018-09-20 CN CN201821561620.2U patent/CN208923167U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212052A (en) * | 2019-07-23 | 2019-09-06 | 绵阳金能移动能源有限公司 | Block water foreboard and its processing method of integrated solar cell interconnection |
| CN110212052B (en) * | 2019-07-23 | 2024-04-30 | 绵阳皓华光电科技有限公司 | Water-blocking front plate for interconnecting integrated solar cells and processing method thereof |
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