CN209544366U - A kind of solar battery structure reducing battery efficiency loss - Google Patents
A kind of solar battery structure reducing battery efficiency loss Download PDFInfo
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- CN209544366U CN209544366U CN201921079762.XU CN201921079762U CN209544366U CN 209544366 U CN209544366 U CN 209544366U CN 201921079762 U CN201921079762 U CN 201921079762U CN 209544366 U CN209544366 U CN 209544366U
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- efficiency loss
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- 239000003292 glue Substances 0.000 claims abstract description 26
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 22
- 238000009413 insulation Methods 0.000 claims description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229920001870 copolymer plastic Polymers 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 229920002397 thermoplastic olefin Polymers 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 238000003754 machining Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 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
-
- 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
Abstract
The utility model discloses the solar battery structures that one kind can reduce battery efficiency loss, including glue film, the groove of multiple discrete settings is equipped in the glue film, support platform is equipped between the adjacent groove, the groove includes adjacent the first sub- groove and the second sub- groove, and the bottom surface of the first sub- groove is lower than the bottom surface of the described second sub- groove.The utility model provides the glue film for containing multiple grooves, and multiple sub- battery tilings are placed in glue film recess edge, conducting resinl is finally formed in the gap between adjacent subcell, completes the interconnection of adjacent subcell positive electrode and back electrode；Cell piece overlapping is reduced, to reduce battery efficiency loss, while preventing the excessive caused solar cell short circuit of conductive glue in interconnection process；It tiles and interconnects between solar subcells, no hanging phenomenon in cell piece part, it is possible to reduce cell piece crack risk increases component machining yield, improves component output power；Suitable for various solar batteries, and especially suitable for ultra-thin solar battery.
Description
Technical field
The utility model belongs to technical field of solar batteries, and in particular to one kind can reduce the sun of battery efficiency loss
It can battery structure.
Background technique
With the development of economy and society, a large amount of result in serious problem of environmental pollution using conventional fossil energy, develop
The common recognition of people is had become using clean energy resource.Since solar energy is inexhaustible, cleanliness without any pollution is most to manage in future
Think most sustainable renewable energy.Luminous energy is directly changed into electric energy by solar battery, is that one kind of Solar use is important
Mode.Conventional solar cell module be using welding welding by the way of, will be having a size of 156.75cm × 156.75cm or 125cm
The solar cell piece positive electrode and negative electrode of × 125cm equal-specification interconnect, and form the power generation list with a constant current, voltage output
Element apparatus.But this solder interconnections mode, it generally requires and is welded under the hot conditions greater than 200 DEG C.It is common at present
Welding be tin alloy cladding copper strips, the thermal expansion coefficient of copper is 7 times of crystalline silicon, after high-temperature soldering in cooling procedure, heat
The difference of the coefficient of expansion will lead to solar cell piece bending, and thinner solar cell piece is bent more serious, biggish bending
Solar cell internal stress is concentrated, solar cell fragment rate is caused to increase, while bending can also cause solar cell and welding
Between rosin joint.In addition, the increasing of solar battery chip size, the operating current of solar battery sheet is gradually with the progress of technique
Increase, since solar battery sheet is by the interconnection of brazing band, power loss and electric current on welding it is square proportional, therefore
Power loss on welding is increasing, has become very important important loss.
For these unfavorable factors for overcoming welding to interconnect, people's utility model imbrication interconnecting method that is, will routinely too
Positive energy battery is cut into the lesser sub- battery of several areas, then the positive electrode of sub- battery is laminated on to the back of previous sub- battery
On electrode, interconnected by conductive glue.The operating current of solar battery is reduced several times, therefore solar energy by this mode
Battery series connection power loss may be reduced significantly；The welding of high temperature welding is not needed simultaneously, avoids solar cell piece bending；
In addition, the cell piece more than 13% or more general components can be placed in same component area, therefore imbrication component is with higher defeated
Power out.But imbrication interconnection also has obvious problem, firstly, cell piece is in being cut into the lesser sub- cell process of area, meeting
Loss in efficiency is brought, especially to the damage of PN junction；Secondly as the mobility of conductive glue, usually has excessive phenomenon, leads
Electric glue, around another side, easily causes solar battery short circuit and component hot spot effect from glue surface, to photovoltaic plant safety
Bring hidden danger；Third, since front and back solar battery is superimposed with each other, it is hanging that overlapping edge has a part solar battery sheet, special
It is not for ultra-thin solar cell, this hanging crack that can cause solar battery sheet in mobile and lamination process or broken
It is broken, cause whole string solar battery to cancel.
Therefore, the new solar battery structure of one kind how is provided to reduce battery efficiency loss, increase solar battery
Yield rate becomes those skilled in the art's important technological problems urgently to be resolved.
Utility model content
The utility model aim is to provide a kind of solar battery structure that can reduce battery efficiency loss, for solving
Cell damage is be easy to cause when cutting cell piece in the prior art, and when interconnection be easy to cause battery short circuit, mobile and laminating packaging
It is easy to produce cell piece crack or broken problem in the process.
To achieve the above object, the technical scheme adopted by the utility model is
A kind of solar battery structure reducing battery efficiency loss, comprising:
Glue film is equipped with the groove of multiple discrete settings in the glue film, is equipped with support platform, institute between the adjacent groove
Stating groove includes adjacent the first sub- groove and the second sub- groove, and the bottom surface of the first sub- groove is lower than the described second sub- groove
Bottom surface；
Multiple sub- batteries are respectively placed in each groove, and the side of the sub- battery has insulating layer, the son
The upper surface of battery is equipped with positive electrode, and the lower surface of the sub- battery is equipped with back electrode, the positive electrode and the back electrode point
The opposite sides face of the sub- battery is not abutted, back electrode described in the positive face of the sub- battery is equipped with the first insulation step,
Positive electrode described in the back side face of the sub- battery is equipped with the second insulation step, wherein the back electrode is located at first son
In groove, the back side of the sub- battery is contacted with the bottom surface of the described second sub- groove, the bottom surface of the second insulation step and institute
Support platform contact is stated, there is gap between the adjacent sub- battery；
Conducting resinl is set in the gap, the positive electrode of each sub- battery and the adjacent sub- battery
Pass through the conductive glue connection between the back electrode.
Optionally, the sub- battery from front toward the back side successively include front transparent conductive film, p-type doping it is hydrogenated amorphous
Silicon layer, the intrinsic hydrogenated amorphous silicon layer in front, crystal silicon layer, the intrinsic hydrogenated amorphous silicon layer in the back side, n-type doping hydrogenated amorphous silicon layer and
Backing transparent conductive film.
Optionally, the first insulation step at least extends to the crystal silicon layer or intrinsic amorphous silicon front, institute down
It states the second insulation step and at least up extends to the crystal silicon layer or the intrinsic amorphous silicon back side.
Optionally, the sub- battery includes that the crystalline silicon of the face N incident light, the face P incident light and the face N, the face P while incident light is different
At least one of matter junction battery.
Optionally, the material of the insulating layer includes at least one of silica, amorphous silicon and silicon nitride.
Optionally, the thickness range of the insulating layer is 0.01-10 μm.
Optionally, the width of the described first sub- groove is greater than the width of the back electrode, the bottom surface of the first sub- groove
Vertical range between the bottom surface of the described second sub- groove is greater than the thickness of the back electrode, the width of the second sub- groove
Less than or equal to the sub- battery the back side not by the width of the back electrode covering part, the bottom surface of the second sub- groove with
Vertical range between the supporting bable tops is greater than or equal to the depth of the second insulation step.
Optionally, the material of the glue film includes ethylene-vinyl acetate copolymer, ethylene-octene copolymer and thermoplastic poly
At least one of alkene.
Optionally, the width range in the gap is 1-10mm.
The advantageous effects of the utility model are: the glue film for containing multiple grooves are provided, by multiple sub- battery tiling pendulum
It is placed on glue film recess edge, finally forms conducting resinl in the gap between adjacent subcell, completes adjacent subcell positive electrode
With the interconnection of back electrode；Cell piece overlapping is reduced, to reduce battery efficiency loss, while preventing conductive glue in interconnection process
The short circuit of solar cell caused by excessive；It tiles and interconnects between solar subcells, no hanging phenomenon in cell piece part, it is possible to reduce
Cell piece crack risk increases component machining yield, improves component output power；Suitable for various solar batteries, and it is special
It Shi Yongyu not ultra-thin solar battery.
Detailed description of the invention
Fig. 1 is the film structure schematic diagram of one embodiment of the utility model.
Fig. 2 is the sub- battery of one embodiment of the utility model and the position view of glue film.
Fig. 3 is the solar battery structure schematic diagram of one embodiment of the utility model.
Fig. 4 is the sub- battery structure schematic diagram of one embodiment of the utility model.
Fig. 5 carries out series connection schematic diagram between the battery strings for one embodiment of the utility model.
Wherein,
103 positive electrodes
104 back electrodes
105 front transparent conductive films
106 p-type doped hydrogenated amorphous silicon layers
The 107 intrinsic hydrogenated amorphous silicon layers in front
108 crystal silicon layers
The intrinsic hydrogenated amorphous silicon layer in 109 back sides
110 n-type doping hydrogenated amorphous silicon layers
111 backing transparent conductive films
115 insulating layers
116 glue films
117 grooves
The sub- groove of 117a first
The sub- groove of 117b second
120 conducting resinls
1211,1212,121 (n-1), 121n battery strings.
Specific embodiment
Below with reference to the attached drawing 1-5 of the utility model, the technical scheme in the embodiment of the utility model is carried out clear, complete
Site preparation description, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, fall within the protection scope of the utility model.
Embodiment:
As shown in Figure 1, Figure 2 and Figure 3, a kind of solar battery structure reducing battery efficiency loss, the solar-electricity
Pool structure includes glue film 116, multiple sub- batteries and conducting resinl 120, wherein the groove of multiple discrete settings is equipped in the glue film
117, support platform is equipped between the adjacent groove, the groove includes the first adjacent sub- sub- groove of groove 117a and second
117b, the bottom surface of the first sub- groove are lower than the bottom surface of the described second sub- groove；Multiple sub- batteries are respectively placed in respectively
In a groove, the side of the sub- battery has insulating layer 115, and the upper surface of the sub- battery is equipped with positive electrode 103, institute
The lower surface for stating sub- battery is equipped with back electrode 104, and the positive electrode abuts the opposite of the sub- battery with the back electrode respectively
Two sides, back electrode described in the positive face of the sub- battery are equipped with the first insulation step, the back side face institute of the sub- battery
Positive electrode is stated equipped with the second insulation step, wherein the back electrode is located in the described first sub- groove, the back side of the sub- battery
It is contacted with the bottom surface of the described second sub- groove, the bottom surface of the second insulation step is contacted with the support platform, adjacent described
There is gap between sub- battery；The conducting resinl is set in the gap, the positive electrode and phase of each sub- battery
Pass through the conductive glue connection between the back electrode of the adjacent sub- battery.In the present embodiment, as shown in figure 4, the son electricity
Pond from front toward the back side successively include front transparent conductive film 105, p-type doped hydrogenated amorphous silicon layer 106, front it is intrinsic hydrogenated
Amorphous silicon layer 107, crystal silicon layer 108, the intrinsic hydrogenated amorphous silicon layer 109 in the back side, n-type doping hydrogenated amorphous silicon layer 110 and the back side
Transparent conductive film 111.As an example, multiple sub- batteries connect at least one battery strings by the conducting resinl.This
In embodiment, multiple sub- batteries connect into multiple battery strings by the conducting resinl, the present embodiment by multiple battery strings it
Between be connected in series or parallel.As shown in figure 5, be shown as n battery strings 1211,1212 ..., between 121 (n-1), 121n
The schematic diagram of series connection.The solar battery structure of the present embodiment contains insulation tank or insulation step, relies between sub- battery
Conducting resinl interconnection tiling can reduce cell piece cutting loss, reduce the duplication loss between cell piece, it is excessive prevent conductive glue
Caused solar battery is short-circuit, and interconnection of tiling between solar subcells does not have lamination portion between cell piece, and there is no too
The positive energy hanging phenomenon of battery portion, it is possible to reduce the cell piece crack that solar battery interconnection generates, to increase solar-electricity
Pool structure prepares yield rate, improves the output power of solar battery, the structure is particularly suitable for ultra-thin solar battery.
In the description of the present invention, it should be understood that term " counterclockwise ", " clockwise " " longitudinal direction ", " transverse direction ",
The orientation of the instructions such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model, rather than indicates
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.
Claims (9)
1. the solar battery structure that one kind can reduce battery efficiency loss characterized by comprising glue film, in the glue film
Groove equipped with multiple discrete settings, support platform is equipped between the adjacent groove, and the groove includes the first adjacent son
Groove and the second sub- groove, the bottom surface of the first sub- groove are lower than the bottom surface of the described second sub- groove；
Multiple sub- batteries are respectively placed in each groove, and the side of the sub- battery has insulating layer, the sub- battery
Upper surface be equipped with positive electrode, the lower surface of the sub- battery is equipped with back electrode, and the positive electrode and the back electrode are adjacent respectively
The opposite sides face of the sub- battery is connect, back electrode described in the positive face of the sub- battery is equipped with the first insulation step, described
Positive electrode described in the back side face of sub- battery is equipped with the second insulation step, wherein the back electrode is located at the described first sub- groove
In, the back side of the sub- battery is contacted with the bottom surface of the described second sub- groove, the bottom surface of the second insulation step and the branch
Contact with platform is supportted, there is gap between the adjacent sub- battery；
Conducting resinl is set in the gap, and the positive electrode of each sub- battery is described with the adjacent sub- battery
Pass through the conductive glue connection between back electrode.
2. the solar battery structure that one kind according to claim 1 can reduce battery efficiency loss, which is characterized in that institute
State sub- battery from front toward the back side successively include front transparent conductive film, p-type doped hydrogenated amorphous silicon layer, front it is intrinsic hydrogenated
Amorphous silicon layer, crystal silicon layer, the intrinsic hydrogenated amorphous silicon layer in the back side, n-type doping hydrogenated amorphous silicon layer and backing transparent conductive film.
3. the solar battery structure that one kind according to claim 2 can reduce battery efficiency loss, which is characterized in that institute
It states the first insulation step and at least extends to the crystal silicon layer or intrinsic amorphous silicon front down, the second insulation step is at least
Up extend to the crystal silicon layer or the intrinsic amorphous silicon back side.
4. the solar battery structure that one kind according to claim 1 can reduce battery efficiency loss, which is characterized in that institute
It states in the silicon/crystalline silicon heterogenous junction battery that sub- battery includes the face N incident light, the face P incident light and the face N, the face P while incident light at least
It is a kind of.
5. the solar battery structure that one kind according to claim 1 can reduce battery efficiency loss, which is characterized in that institute
The material for stating insulating layer includes at least one of silica, amorphous silicon and silicon nitride.
6. the solar battery structure that one kind according to claim 1 can reduce battery efficiency loss, which is characterized in that institute
The thickness range for stating insulating layer is 0.01-10 μm.
7. the solar battery structure that one kind according to claim 1 can reduce battery efficiency loss, which is characterized in that institute
The width for stating the first sub- groove is greater than the width of the back electrode, bottom surface and the described second sub- groove of the first sub- groove
Vertical range between bottom surface is greater than the thickness of the back electrode, and the width of the second sub- groove is less than or equal to the son electricity
The back side in pond is not by the width of the back electrode covering part, between the bottom surface and the support platform of the second sub- groove
Vertical range is greater than or equal to the depth of the described second exhausted step.
8. the solar battery structure that one kind according to claim 1 can reduce battery efficiency loss, which is characterized in that institute
The material for stating glue film includes at least one of ethylene-vinyl acetate copolymer, ethylene-octene copolymer and thermoplastic polyolefin.
9. the solar battery structure that one kind according to claim 1 can reduce battery efficiency loss, which is characterized in that institute
The width range for stating gap is 1-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921079762.XU CN209544366U (en) | 2019-07-10 | 2019-07-10 | A kind of solar battery structure reducing battery efficiency loss |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921079762.XU CN209544366U (en) | 2019-07-10 | 2019-07-10 | A kind of solar battery structure reducing battery efficiency loss |
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| Publication Number | Publication Date |
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| CN209544366U true CN209544366U (en) | 2019-10-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335920A (en) * | 2019-07-10 | 2019-10-15 | 中威新能源(成都)有限公司 | A kind of solar battery structure production method reducing battery efficiency loss |
| CN111732901A (en) * | 2020-06-16 | 2020-10-02 | 晶科绿能(上海)管理有限公司 | Adhesive film, photovoltaic module and manufacturing method thereof |
| US11929444B2 (en) | 2020-06-16 | 2024-03-12 | Jinko Green Energy (Shanghai) Management Co., LTD | Functional part, photovoltaic module and method for manufacturing photovoltaic module |
-
2019
- 2019-07-10 CN CN201921079762.XU patent/CN209544366U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335920A (en) * | 2019-07-10 | 2019-10-15 | 中威新能源(成都)有限公司 | A kind of solar battery structure production method reducing battery efficiency loss |
| CN111732901A (en) * | 2020-06-16 | 2020-10-02 | 晶科绿能(上海)管理有限公司 | Adhesive film, photovoltaic module and manufacturing method thereof |
| US11929444B2 (en) | 2020-06-16 | 2024-03-12 | Jinko Green Energy (Shanghai) Management Co., LTD | Functional part, photovoltaic module and method for manufacturing photovoltaic module |
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Effective date of registration: 20240118 Address after: 610200 within phase 6 of Industrial Development Zone of Southwest Airport Economic Development Zone, Shuangliu District, Chengdu City, Sichuan Province Patentee after: TONGWEI SOLAR (CHENGDU) Co.,Ltd. Address before: 610000 in Shuangliu Southwest Airport Economic Development Zone, Chengdu, Sichuan Patentee before: Zhongwei New Energy (Chengdu) Co.,Ltd. |