CN106910785A - Double-sided solar battery component and system - Google Patents
Double-sided solar battery component and system Download PDFInfo
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- CN106910785A CN106910785A CN201710122989.7A CN201710122989A CN106910785A CN 106910785 A CN106910785 A CN 106910785A CN 201710122989 A CN201710122989 A CN 201710122989A CN 106910785 A CN106910785 A CN 106910785A
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- solar battery
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- 239000005336 safety glass Substances 0.000 claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 4
- 229940037003 alum Drugs 0.000 claims description 40
- 229910052710 silicon Inorganic materials 0.000 claims description 13
- 239000010703 silicon Substances 0.000 claims description 13
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 11
- 229910052709 silver Inorganic materials 0.000 claims description 11
- 239000004332 silver Substances 0.000 claims description 11
- 238000002161 passivation Methods 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 6
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 5
- 238000005496 tempering Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000002834 transmittance Methods 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 239000004411 aluminium Substances 0.000 description 10
- 230000009466 transformation Effects 0.000 description 7
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 description 6
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 description 6
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 description 6
- 230000005684 electric field Effects 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 241000127225 Enceliopsis nudicaulis Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical compound C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022433—Particular geometry of the grid contacts
-
- 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
- Y02E10/52—PV systems with concentrators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of double-sided solar battery component, including the front safety glass, the first tack coat, solar battery group, the second tack coat and the back side safety glass that are cascading from top to bottom, the solar battery group is formed by double-sided solar battery serial or parallel connection, is welded together by welding between double-sided solar battery；The front safety glass, back side safety glass are provided with loophole, gap area of the loophole between double-sided solar battery.Accordingly, invention additionally discloses a kind of system using above-mentioned double-sided solar battery component.Using the present invention, the solar cell module simple structure, cost is relatively low, and the generated output of battery component is big.
Description
Technical field
The present invention relates to area of solar cell, more particularly to a kind of double-sided solar battery component and system.
Background technology
Solar cell module is the core in solar power system, and its effect is to convert solar energy into electricity
Can, then electricity is sent in battery and is stored, or promote loaded work piece.Solar cell is that one kind effectively absorbs the sun
Radiation energy, the device of electric energy is converted optical energy into using photovoltaic effect, when solar irradiation is in semiconductor P-N junction (P-N
Junction on), new hole-electron is formed to (V-E pair), in the presence of P-N junction electric field, hole flows to P by N areas
Area, electronics flows to N areas by P areas, and electric current is just formed after connecting circuit.
Double-sided solar battery component not only absorbs the front direct projection light from the sun, while it is anti-to absorb back side object
The sunray penetrated.Therefore, for double-sided solar battery component, influence of the component design to overall generated output need to be considered.
The content of the invention
The technical problems to be solved by the invention are, there is provided a kind of double-sided solar battery component, simple structure, cost
Relatively low, the generated output of battery component is big.
The technical problems to be solved by the invention are also resided in, there is provided a kind of solar cell system, simple structure, cost compared with
Low, the generated output of battery component is big.
In order to solve the above-mentioned technical problem, the invention provides a kind of double-sided solar battery component, including from top to bottom
Front safety glass, the first tack coat, solar battery group, the second tack coat and the back side safety glass being cascading,
The solar battery group is formed by double-sided solar battery serial or parallel connection, is welded by welding between double-sided solar battery
Together；
The double-sided solar battery includes the silver-colored main grid of the back of the body, alum gate line, backside passivation layer, P-type silicon, N-type emitter stage, front passivation
Layer and positive silver electrode, the backside passivation layer by forming the lbg area that 30-500 be arranged in parallel after lbg, often
At least 1 group lbg unit is set in individual lbg area；Alum gate line is corresponded with lbg area and set, the alum gate
Line is connected by lbg area with P-type silicon；Main grid is vertical is connected with back of the body silver for the alum gate line；
The alum gate line can also be shaped form, arc, waveform etc..
The front safety glass, back side safety glass are provided with loophole, and the loophole is located at double-sided solar electricity
Gap area between pond.
Used as the preferred embodiment of such scheme, the size of the gap area between the double-sided solar battery is 0.5-
10cm, the size of the size less than the gap area between double-sided solar battery of the loophole, the size of the loophole
It is 0.4-9cm.
Used as the preferred embodiment of such scheme, the loophole is circular hole, slotted eye, tri-angle-holed, quadrilateral hole, five
Side shape hole or hexagonal hole.
As the preferred embodiment of such scheme, when at least 2 groups of lbg units are set in each lbg area, phase
Spacing between adjacent two groups of lbg units be arrangeding in parallel is 5-300 μm.
Used as the preferred embodiment of such scheme, the pattern of the lbg unit is lines, circle, ellipse, triangle
Shape, quadrangle, pentagon, hexagon, cross or star.
Used as the preferred embodiment of such scheme, the pattern of the lbg unit is a continuous straight line or multiple lines
The dotted line of Duan Zucheng；
When the dotted line that the pattern of the lbg unit is multiple line segment compositions, the length of the line segment is identical or different.
Used as the preferred embodiment of such scheme, the width in the lbg area is 10-500 μm；Positioned at lbg area
More than the width in lbg area, the width of alum gate line is 30-550 μm to the width of the alum gate line of lower section.
Used as the preferred embodiment of such scheme, the double-sided solar battery is two-sided monocrystalline solar cells or two-sided many
Brilliant solar cell.
Used as the preferred embodiment of such scheme, first tack coat, the second tack coat are ethylene-vinyl acetate copolymer
The tack coat being made；
The framework is metal frame.
The front safety glass, back side safety glass are ultrawhite tempering coated glass of the light transmittance more than 90%.
Accordingly, invention additionally discloses a kind of solar cell system, it includes above-mentioned double-sided solar battery component.
Implement the present invention, have the advantages that：
The present invention, by the reflective medium of double-sided solar battery system, is made using the positive back side safety glass for being provided with loophole
Sunshine through loophole is re-reflected into the back side of component, increases the solar energy that module backside is received, and improves battery
The photoelectric transformation efficiency at the group back side, so that the generated energy of overall lifting double-sided solar battery component.
In addition to being provided with loophole in positive back side safety glass, the present invention also uses specific double-sided solar battery,
Specifically p-type PERC double-sided solar batteries, it is provided with a plurality of alum gate line be arrangeding in parallel, not only substitutes existing in cell backside
Full aluminum back electric field, realizes the function of back side extinction in one side solar cell, and the secondary grid structure also served as in back of the body silver electrode is used for
Conduction electronics.P-type PERC double-sided solar batteries of the present invention are made, the consumption of silver paste and aluminium paste can be saved, reduce production
Cost, and two-sided absorption luminous energy is realized, it is significantly expanded the range of application of solar cell and improves photoelectric transformation efficiency.
When the collocation of aforementioned p-type PERC double-sided solar batteries is provided with the positive back side safety glass of loophole, can be notable
The generated energy of solar cell module is improved, generated energy improves 5%-20%.
Brief description of the drawings
Fig. 1 is a kind of front view of double-sided solar battery component of the invention；
Fig. 2 is the top view of double-sided solar battery component shown in Fig. 1；
Fig. 3 is the sectional view of double-sided solar battery shown in Fig. 1；
Fig. 4 is the embodiment schematic diagram of backside structure one of double-sided solar battery shown in Fig. 3；
Fig. 5 is another embodiment schematic diagram of backside structure of double-sided solar battery shown in Fig. 3；
Fig. 6 is the backside structure another embodiment schematic diagram of double-sided solar battery shown in Fig. 3.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with accompanying drawing
Step ground is described in detail.
As shown in Figure 1, 2, the present invention provides a kind of double-sided solar battery component, including is cascading from top to bottom
Front safety glass 10, the first tack coat 20, solar battery group 30, the second tack coat 40 and back side safety glass 50, institute
State solar battery group 30 to be formed by the serial or parallel connection of double-sided solar battery 31, welding is passed through between double-sided solar battery 31
Weld together.
The front safety glass 10, back side safety glass 50 are provided with loophole 60, and the loophole 60 is located at two-sided
Gap area 70 between solar cell 31, can increase the solar energy that module backside is received, and improve the battery pack back side
Photoelectric transformation efficiency so that the generated energy of overall lifting double-sided solar battery component.
The size of the gap area 70 between the double-sided solar battery 31 is 0.5-10cm, the chi of the loophole 60
The size of the very little gap area 70 less than between double-sided solar battery, the size of the loophole 60 is 0.4-9cm.Loophole
60 positions and dimensions for setting, its relation with gap area 70 is directly connected to the physical and chemical performance of solar cell module, with
And the back side receives the degree of luminous energy.Because general photovoltaic module is applied to hot and humid coastal region, or during sunshine
Between plateau or desert areas very long, its feature is all that environment is more severe, therefore it is required that solar cell module have it is good
Barrier well, damage resistant, resistance to UV and chemical resistance.The present invention is by loophole 60 between double-sided solar battery
Gap area 70, and ensure that its size, less than gap area 70, can not influence the physical and chemical performance of solar cell module
Under the premise of（Keep good barrier, damage resistant, resistance to UV and chemical resistance）, increase the light that module backside is received
Can, the photoelectric transformation efficiency at the battery pack back side is improved, so that the generated energy of overall lifting double-sided solar battery component.
The loophole 60 is preferably circular hole, slotted eye, tri-angle-holed, quadrilateral hole, pentagon hole or hexagonal hole.
It should be noted that the loophole 60 can also be other shapes, such as octagon hole, dodecagonal apertures, irregular polygon
Shape hole etc., embodiments thereof is not limited to illustrated embodiment of the present invention.
In addition to being provided with loophole in positive back side safety glass, the present invention also uses specific double-sided solar battery.
As shown in figure 3, the double-sided solar battery 31 includes the silver-colored main grid 1 of the back of the body, alum gate line 2, backside passivation layer, the transmitting of P-type silicon 5, N-type
Pole 6, front passivation layer 7 and positive silver electrode 8, wherein, the backside passivation layer includes back side silicon nitride 3, backside oxide aluminium film
4, front passivation layer 7 can be front side silicon nitride film 7, but not limited to this.
The back side silicon nitride 3 and backside oxide aluminium film 4 are by forming what 30-500 groups be arranged in parallel after lbg
Lbg area 9, sets 1-50 group lbg units in each lbg area；A pair of alum gate line 2 and lbg area 9 one
Should set, the alum gate line 2 is connected by lbg area 9 with P-type silicon 5；Main grid 1 is vertical is connected with back of the body silver for the alum gate line 2.
The present invention is improved to existing one side PERC solar cells, is no longer provided with full aluminum back electric field, but by its
Become many alum gate lines 2, opened using laser is opened up in lbg technology overleaf silicon nitride film 3 and backside oxide aluminium film 4
Groove area 9, and alum gate line 2 is printed in the lbg area 9 that these be arranged in parallel, so as to form localized contact with P-type silicon 5,
The alum gate line 2 of intensive parallel arrangement can not only play raising open-circuit voltage Voc and short circuit current Jsc, reduce minority carrier and answer
Conjunction rate, improves the effect of cell photoelectric conversion efficiency, the full aluminum back electric field of alternative existing one side battery structure, and alum gate line
2 back sides for not covering silicon chip comprehensively, sunshine can be projected in silicon chip between alum gate line 2, so as to realize that silicon chip back side is inhaled
Luminous energy is received, the photoelectric transformation efficiency of battery is greatly improved.
Preferably, the radical of the alum gate line 2 is corresponding with the number in lbg area, is all 30-500 bars, more preferably, institute
The radical for stating alum gate line 2 is 80-220 bars.
Silicon chip back side, alum gate line 2 and the back of the body perpendicular connection of silver-colored main grid 1 are illustrated in figure 4, wherein the silver-colored main grid 1 of the back of the body is continuous
Straight grid, because back side silicon nitride 3 and backside oxide aluminium film 4 are provided with lbg area 9, when printing aluminium paste forms alum gate line 2, aluminium
Slurry filling is to lbg area 9 so that alum gate line 2 forms localized contact with P-type silicon 5, can by electric transmission to alum gate line 2, with
The silver-colored main grid 1 of the intersecting back of the body of alum gate line 2 then collects the electronics on alum gate line 2, it follows that alum gate line 2 of the present invention is played and carried
The effect of high open circuit voltage Voc and short circuit current Jsc, reduction minority carrier recombination rate, and transmission electronics, it is alternative existing
Full aluminum back electric field in one side solar cell, not only reduces the consumption of silver paste and aluminium paste, reduces production cost, and realize two-sided
Luminous energy is absorbed, the range of application of solar cell is significantly expanded and is improved photoelectric transformation efficiency.
The silver-colored main grid 1 of the back of the body of the present invention can also set in addition to being illustrated in figure 4 the setting of continuous straight grid in space segmentation
Put, as shown in Figure 5.Can also be set in space segmentation, and be connected by connecting line between each adjacent sectional, as shown in Figure 6.
It should be noted that setting more than 2 groups lbg units in lbg area, what two adjacent groups be arranged in parallel swashs
Spacing between light slotted unit is 5-300 μm.
Every group of lbg unit includes at least one lbg unit, the pattern of the lbg unit is lines,
Circle, ellipse, triangle, quadrangle, pentagon, hexagon, cross or star.Alum gate line 2 can be linear, curve
Shape, waveform, zigzag, but not limited to this.Every group of arrangement mode of lbg unit can also be linear, shaped form,
Waveform, zigzag, but not limited to this.The shape of alum gate line is identical with the arrangement mode of every group of lbg unit.
Preferably, the pattern of the lbg unit is the dotted line of a continuous straight line or multiple line segment compositions；When
When the pattern of the lbg unit is the dotted line of multiple line segment compositions, the length of the line segment is identical or different.
The width in lbg area 9 of the present invention is 10-500 μm；Positioned at the alum gate line 2 of lbg area 9 lower section
More than the width in lbg area 9, the width of alum gate line 2 is 30-550 μm to width.Plurality is selected in the above-mentioned width of alum gate line 2
Value is such as 500 μm, and side by side can be located in multigroup lbg area 9 same by the selection of the width of lbg area 9 compared with such as 40 μm of fractional value
On alum gate line 2, it is ensured that alum gate line 2 has enough contacts area with P-type silicon 5.
Therefore, p-type PERC double-sided solar batteries change of the present invention is provided with a plurality of alum gate line 2 be arrangeding in parallel, no
Full aluminum back electric field realizes back side extinction in only substituting existing one side solar cell, is additionally operable to carry on the back the secondary grid structure in silver electrode and uses
Make conduction electronics.P-type PERC double-sided solar batteries of the present invention are made, the consumption of silver paste and aluminium paste can be saved, reduce life
Cost is produced, and realizes two-sided absorption luminous energy, be significantly expanded the range of application of solar cell and improve photoelectric transformation efficiency.
Further, the double-sided solar battery 31 can be two-sided monocrystalline solar cells or two-sided polycrystalline solar electricity
Pond, but not limited to this.
The front safety glass, back side safety glass are ultrawhite tempering coated glass of the light transmittance more than 90%, can be most
Make to big degree being transmitted on battery for sunshine, it is to avoid loss of the sunshine caused by reflecting and reflecting, and due to tempering
Coated glass has intensity very high, therefore can preferably protect the inside of component.
First tack coat 20, the second tack coat 40 are ethylene-vinyl acetate copolymer（EVA）The tack coat being made.
First tack coat 20, the second tack coat 40 are used for that safety glass and solar battery group, ethene-vinyl acetate is adhesively fixed
Copolymer（EVA）Water-tolerant, corrosion resistance is strong, machinability is good and against shock, it is ensured that battery component has more long
Service life.
Invention components surrounding is fixed using framework 80, is installed for connecting solar-electricity outside the back side safety glass 50
The terminal box 90 of the both positive and negative polarity of pond group 30.Wherein, the framework is metal frame, for protecting component, plays certain sealing, support
Effect.The metal frame can be aluminium frame, but not limited to this.Terminal box 90 is used for coupling assembly and component, improves solar power station
Generated output.
Accordingly, double-sided solar battery component invention additionally discloses a kind of solar cell system including above-mentioned.Make
It is a preferred embodiment of solar cell system, including above-mentioned double-sided solar battery component, batteries, charge and discharge is automatically controlled
Device inverter processed, AC power distribution cabinet/AC distribution panel and solar tracking control system.Wherein, solar cell system can be provided with batteries,
Charging-discharging controller inverter, it is also possible to do not set batteries, charging-discharging controller inverter, those skilled in the art can be with root
It is configured according to being actually needed.
It should be noted that in solar cell system, the part in addition to double-sided solar battery component, with reference to existing
There is Technology design.
It is last to should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
The limitation of scope is protected, although being explained in detail to the present invention with reference to preferred embodiment, one of ordinary skill in the art should
Understand, technical scheme can be modified or equivalent, without deviating from the essence of technical solution of the present invention
And scope.
Claims (10)
1. a kind of double-sided solar battery component, it is characterised in that including the front tempering glass being cascading from top to bottom
Glass, the first tack coat, solar battery group, the second tack coat and back side safety glass, the solar battery group by it is two-sided too
The series connection of positive energy battery is formed in parallel, and is welded together by welding between double-sided solar battery；
The double-sided solar battery includes the silver-colored main grid of the back of the body, alum gate line, backside passivation layer, P-type silicon, N-type emitter stage, front passivation
Layer and positive silver electrode, the backside passivation layer by forming the lbg area that 30-500 be arranged in parallel after lbg, often
At least 1 group lbg unit is set in individual lbg area；Alum gate line is corresponded with lbg area and set, the alum gate
Line is connected by lbg area with P-type silicon；Main grid is vertical is connected with back of the body silver for the alum gate line；
The front safety glass, back side safety glass are provided with loophole, the loophole located at double-sided solar battery it
Between gap area.
2. double-sided solar battery component as claimed in claim 1, it is characterised in that the seam between the double-sided solar battery
The size in gap region is 0.5-10cm, the chi of the size less than the gap area between double-sided solar battery of the loophole
Very little, the size of the loophole is 0.4-9cm.
3. double-sided solar battery component as claimed in claim 2, it is characterised in that the loophole be circular hole, slotted eye,
Tri-angle-holed, quadrilateral hole, pentagon hole or hexagonal hole.
4. double-sided solar battery component as claimed in claim 1, it is characterised in that set at least when in each lbg area
During 2 groups of lbg units, the spacing between the lbg unit that two adjacent groups be arranged in parallel is 5-300 μm.
5. double-sided solar battery component as claimed in claim 1, it is characterised in that the pattern of the lbg unit is line
Bar, circle, ellipse, triangle, quadrangle, pentagon, hexagon, cross or star.
6. double-sided solar battery component as claimed in claim 1, it is characterised in that the pattern of the lbg unit is
The dotted line of the continuous straight line of bar or multiple line segment compositions；
When the dotted line that the pattern of the lbg unit is multiple line segment compositions, the length of the line segment is identical or different.
7. double-sided solar battery component as claimed in claim 1, it is characterised in that the width in the lbg area is 10-
500μm；More than the width in lbg area, the width of alum gate line is 30- to the width of the alum gate line below lbg area
550μm。
8. double-sided solar battery component as claimed in claim 1, it is characterised in that the double-sided solar battery is two-sided list
Brilliant solar cell or two-sided polycrystalline solar cell.
9. double-sided solar battery component as claimed in claim 1, it is characterised in that first tack coat, the second tack coat
For the tack coat that ethylene-vinyl acetate copolymer is made；
The framework is metal frame；
The front safety glass, back side safety glass are ultrawhite tempering coated glass of the light transmittance more than 90%.
10. a kind of solar cell system, it is characterised in that including the double-sided solar as described in claim any one of 1-9
Battery component.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710122989.7A CN106910785A (en) | 2017-03-03 | 2017-03-03 | Double-sided solar battery component and system |
| PCT/CN2017/087360 WO2018157497A1 (en) | 2017-03-03 | 2017-06-07 | Double-sided solar cell assembly and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710122989.7A CN106910785A (en) | 2017-03-03 | 2017-03-03 | Double-sided solar battery component and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106910785A true CN106910785A (en) | 2017-06-30 |
Family
ID=59186671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710122989.7A Pending CN106910785A (en) | 2017-03-03 | 2017-03-03 | Double-sided solar battery component and system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106910785A (en) |
| WO (1) | WO2018157497A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911076A (en) * | 2017-11-25 | 2018-04-13 | 扬州市汉讯科技有限公司 | A kind of double-sided solar component and cooling system |
| CN110504333A (en) * | 2019-09-19 | 2019-11-26 | 通威太阳能（合肥）有限公司 | Z-shaped pattern slotting structure suitable for thin-sheet PERC battery |
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| CN107911076B (en) * | 2017-11-25 | 2019-08-09 | 扬州市汉讯科技有限公司 | A kind of double-sided solar component and cooling system |
| CN110504333A (en) * | 2019-09-19 | 2019-11-26 | 通威太阳能（合肥）有限公司 | Z-shaped pattern slotting structure suitable for thin-sheet PERC battery |
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| WO2018157497A1 (en) | 2018-09-07 |
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