CN206629026U - A kind of double-sided solar electricity generation system - Google Patents
A kind of double-sided solar electricity generation system Download PDFInfo
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- CN206629026U CN206629026U CN201720201742.XU CN201720201742U CN206629026U CN 206629026 U CN206629026 U CN 206629026U CN 201720201742 U CN201720201742 U CN 201720201742U CN 206629026 U CN206629026 U CN 206629026U
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- sided solar
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- solar battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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Abstract
The utility model discloses a kind of double-sided solar electricity generation system, catoptric system including double-sided solar battery assembly array and around double-sided solar battery assembly array surrounding, the catoptric system forms by angle-adjusting bracket and for the optical element of reflected sunlight, and the optical element is on the angle-adjusting bracket.Using the utility model, the sunlight of double-sided solar battery assembly array surrounding can be reflexed to its positive and/or the back side sensitive area, lift the generated energy of double-sided solar battery electricity generation system.
Description
Technical field
Solar cell module systems technology field is the utility model is related to, more particularly to a kind of double-sided solar generates electricity and is
System.
Background technology
In today that traditional energy anxiety, environmental pressure increase day by day, photovoltaic solar generates electricity pollution-free, renewable with its own
The characteristics of, the favor of people is received, is a kind of wide regenerative resource of development prospect.Common photovoltaic generating system is by too
The compositions such as positive energy battery component, controller for solar, battery.
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 stored, or promotes loaded work piece.
Solar cell is that one kind effectively absorbs solar radiant energy, and electric energy is converted optical energy into using photovoltaic effect
Device, when solar irradiation is in semiconductor P-N junction (P-N Junction), form new hole-electron to (V-E pair),
In the presence of P-N junction electric field, hole flows to P areas by N areas, and electronics flows to N areas by P areas, and electric current is just formed after connecting circuit.
With the development of solar battery technology, double-sided solar battery is because photoelectric transformation efficiency height is increasingly by industry
The attention on boundary, and be expected to enter large-scale industrial production.Therefore, it is necessary to the one side solar cell power generation to routine
System is transformed, and gives full play to the advantage of double-sided solar battery electricity generation system.
Utility model content
Technical problem to be solved in the utility model is, there is provided a kind of double-sided solar electricity generation system, can incite somebody to action double
The sunlight of face solar cell module array surrounding reflexes to the sensitive area at its front and/or the back side, lifting double-sided solar electricity
The generated energy of pond electricity generation system.
In order to solve the above-mentioned technical problem, the utility model provides a kind of double-sided solar electricity generation system, including two-sided
Solar cell module array and the catoptric system around double-sided solar battery assembly array surrounding, the catoptric system by
Angle-adjusting bracket and the optical element composition for reflected sunlight, the optical element are located at the angle-adjusting bracket
On.
As the improvement of such scheme, the double-sided solar battery assembly array is laterally set, and the catoptric system is set
In the lower section of the double-sided solar battery assembly array, sunlight is reflexed to the back side of double-sided solar battery assembly array.
As the improvement of such scheme, the double-sided solar battery assembly array is vertically arranged, and the catoptric system will
Sunlight reflexes to the front and back of double-sided solar battery assembly array.
As the improvement of such scheme, the angle-adjusting bracket can adjust optical element according to current position of sun
Angle, the sunlight for being irradiated to optical element surface is set to reflex to double-sided solar battery assembly surface.
As the improvement of such scheme, the catoptric system surrounds double-sided solar battery with two or more different-diameters
Assembly array is set.
As the improvement of such scheme, the optical element of the reflected sunlight is speculum, aluminium foil or applies white paint plate.
As the improvement of such scheme, the double-sided solar battery assembly array is p-type double-sided solar battery component
Array or N-type double-sided solar battery assembly array.
As the improvement of such scheme, the solar cell module array is p-type double-sided solar battery assembly array,
It includes the p-type double-sided solar battery of array setting, and the p-type double-sided solar battery includes carrying on the back silver-colored main grid, alum gate line, the back of the body
Face silicon nitride film, backside oxide aluminium film, P-type silicon, N-type emitter stage, front side silicon nitride film and positive silver electrode；The back side silicon nitride silicon
Film, backside oxide aluminium film, P-type silicon, N-type emitter stage, front side silicon nitride film and positive silver electrode stack gradually connection from bottom to up；
What the back side silicon nitride and backside oxide aluminium film formed that 30-500 be arranged in parallel after lbg swashs
Light slotted zones, at least 1 group of lbg unit is set in each lbg area, and the alum gate line passes through lbg area and P
Type silicon is connected；The alum gate line is with carrying on the back silver-colored main grid vertical connection.
As the improvement of such scheme, when setting 2 groups or more than 2 groups lbg units in each lbg area,
Each group lbg unit be arranged in parallel, and the spacing between two adjacent groups lbg unit is 5-480 μm；
Every group of lbg unit includes at least one lbg unit, and the pattern of lbg unit is circular, oval
Shape, triangle, quadrangle, pentagon, hexagon, cross or star.
As the improvement of such scheme, every group of lbg unit is the rectangular lbg of strip including a pattern
Unit；Same lbg unit of organizing is along alum gate line bearing of trend interval type configuration, the spacer of two neighboring lbg unit
From for 0.01-50mm；The silver-colored main grid of the back of the body is continuous straight grid；Or the silver-colored main grid of the back of the body is set in space segmentation；Or the back of the body silver
Main grid is set in space segmentation, is connected between each adjacent sectional by connected region.
Implement the utility model, have the advantages that：
A kind of double-sided solar electricity generation system of the utility model includes double-sided solar battery assembly array and around double
The catoptric system of face solar cell module array surrounding, the sunlight of double-sided solar battery assembly array surrounding can be reflected
To the sensitive area in its front and/or the back side, the generated energy of lifting double-sided solar battery electricity generation system.
Brief description of the drawings
Fig. 1 is a kind of first embodiment structural representation of double-sided solar electricity generation system of the utility model；
Fig. 2 is a kind of second embodiment structural representation of double-sided solar electricity generation system of the utility model；
Fig. 3 is a kind of 3rd embodiment structural representation of double-sided solar electricity generation system of the utility model；
Fig. 4 is a kind of fourth embodiment structural representation of double-sided solar electricity generation system of the utility model；
Fig. 5 is the structural representation of p-type double-sided solar battery of the present utility model；
Fig. 6 is the another structural representation of p-type double-sided solar battery of the present utility model；
Fig. 7 is another structural representation of p-type double-sided solar battery of the present utility model；
Fig. 8 is another structural representation of p-type double-sided solar battery of the present utility model；
Fig. 9 is the lbg area first embodiment structural representation of p-type double-sided solar battery of the present utility model；
Figure 10 is the lbg area second embodiment structural representation of p-type double-sided solar battery of the present utility model；
Figure 11 is the lbg area 3rd embodiment structural representation of p-type double-sided solar battery of the present utility model；
Figure 12 is the lbg area fourth embodiment structural representation of p-type double-sided solar battery of the present utility model；
Figure 13 is the example structure schematic diagram of lbg area the 5th of p-type double-sided solar battery of the present utility model；
Figure 14 is the lbg area sixth embodiment structural representation of p-type double-sided solar battery of the present utility model；
Figure 15 is the example structure schematic diagram of lbg area the 7th of p-type double-sided solar battery of the present utility model.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type is described in further detail.Only this state, the utility model occur in the text or will appear from upper and lower, left and right, it is preceding,
Afterwards, the orientation such as inside and outside word, only on the basis of accompanying drawing of the present utility model, it is not to specific restriction of the present utility model.
As shown in figure 1, the utility model embodiment provides a kind of double-sided solar electricity generation system, including double-sided solar
Cell array module 10 and the catoptric system 11 around the surrounding of double-sided solar battery assembly array 10, the catoptric system 11
Formed by angle-adjusting bracket 112 and for the optical element 111 of reflected sunlight, the optical element 111 is located at the angle
Spend in adjusting bracket 112.The optical element 111 of the reflected sunlight is speculum, aluminium foil or applies white paint plate.
A kind of double-sided solar electricity generation system of the utility model includes double-sided solar battery assembly array 10 and surround
The catoptric system 11 of the surrounding of double-sided solar battery assembly array 10, can be by the surrounding of double-sided solar battery assembly array 10
Sunlight reflexes to the sensitive area at its front and/or the back side, lifts the generated energy of double-sided solar battery electricity generation system.
According to the utility model first embodiment, the present embodiment is applied to the area of double-sided solar battery assembly array 10
The little situation with the area difference of catoptric system 11, as their area ratio is more than 1:4.At this point it is possible to will be described two-sided
Solar cell module array 10 is laterally set, and the catoptric system 11 is located at the double-sided solar battery assembly array 10
Lower section, sunlight is reflexed to the back side of double-sided solar battery assembly array 10.
Using the present embodiment, the front of double-sided solar battery assembly array 10 is by sun light direct beam, and the back side then receives
The sunshine that catoptric system 11 reflects, relative to the solar battery group of existing one side light, the generated output of unit area
It is obviously improved.
As shown in Fig. 2 according to the utility model second embodiment, it is with first embodiment difference：It is described two-sided
Solar cell module array 10 is vertically arranged, and sunlight is reflexed to double-sided solar battery assembly array by the catoptric system 11
10 front and back.
The present embodiment be applied to the area difference of area and the catoptric system 11 of double-sided solar battery assembly array 10 compared with
Big situation, as their area ratio is less than 1:4.Now, if using the single of double-sided solar battery assembly array 10
Surface receives the irradiation of catoptric system 11, then light may be caused excessively to assemble, and makes a certain surface temperature too high, or more than it
Maximum light inversion quantity, transformation efficiency is reduced, its life-span may be influenceed when serious.Therefore, using the reflective system of second embodiment
System 11, sunlight can be assigned to the front and back of double-sided solar battery assembly array 10, make light more fifty-fifty according to
The two sides of double-sided solar battery assembly array 10 is penetrated, extends the service life of double-sided solar battery assembly array 10.
Preferably, the angle-adjusting bracket 112 can adjust the angle of optical element 111 according to current position of sun,
The sunlight for being irradiated to the surface of optical element 111 is set to reflex to the surface of double-sided solar battery assembly array 10.The angle is adjusted
Section support 112 can include rack body 113, steering mechanism 114 and controlling organization（It is not drawn into figure）, the steering mechanism
114 on rack body 113, and the control driving double-sided solar battery assembly array 10 of controlled mechanism is overturn.And control
Mechanism can calculate the angle of the sun by sun moving law, or according to the real-time monitored of current position of sun to steering mechanism
114 send control signal.
As shown in Figure 3 and Figure 4, the embodiment of the utility model third and fourth, it is real that they correspond respectively to first and second
Example is applied, difference is, the catoptric system 11 surrounds double-sided solar battery component battle array with two or more different-diameters
Row 10 are set, and the photoelectric conversion effect of solar cell costly is lifted by relatively inexpensive catoptric system 11, will be to the greatest extent
The sunlight of possible large area converges to the surface of double-sided solar battery assembly array 10, reduces the solar-electricity of same generated output
The input of pool equipment, it is easy to the popularization of solar cell.
Double-sided solar battery assembly array 10 disclosed in the utility model, the double-sided solar battery assembly array 10
Can be p-type double-sided solar battery assembly array or N-type double-sided solar battery assembly array.Preferably, the solar energy
Cell array module is p-type double-sided solar battery assembly array, and it includes the p-type double-sided solar battery of array setting.
Correspondingly, as shown in figure 5, the utility model discloses a kind of p-type double-sided solar battery, including the silver-colored main grid 1 of the back of the body,
Alum gate line 2, back side silicon nitride 3, backside oxide aluminium film 4, P-type silicon 5, N-type emitter stage 6, front side silicon nitride film 7 and positive silver electrode
8；The back side silicon nitride 3, backside oxide aluminium film 4, P-type silicon 5, N-type emitter stage 6, front side silicon nitride film 7 and positive silver electrode 8
Connection is stacked gradually from bottom to up；
The back side silicon nitride 3 and backside oxide aluminium film 4 form what 30-500 groups be arranged in parallel after lbg
Lbg area, at least 1 group of lbg unit 9 is set in each lbg area, and the alum gate line 2 passes through lbg area
It is connected with P-type silicon 5；The alum gate line 2 is with carrying on the back the silver-colored vertical connection of main grid 1.
The utility model is improved to existing one side solar cell, 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, and alum gate line 2 is printed in the lbg area that these be arranged in parallel, it is close so as to form localized contact with P-type silicon 5
The alum gate line 2 of collection parallel arrangement, which can not only play, improves open-circuit voltage Voc and short circuit current Jsc, reduces minority carrier recombination
Rate, improve 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
The back side of silicon chip is not covered comprehensively, and sunshine can be projected in silicon chip between alum gate line 2, so as to realize that silicon chip back side absorbs
Luminous energy, greatly improve the photoelectric transformation efficiency of battery.
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.The alum gate line 2 can be straight line or shaped form, arc, waveform, folding
Linear etc., lbg area shape is corresponding with alum gate line 2, and embodiments thereof is not limited to the utility model illustrated embodiment.
Silicon chip back side is illustrated in figure 6, alum gate line 2 is with carrying on the back silver-colored 1 perpendicular connection of main grid, wherein it is continuous to carry on the back silver-colored main grid 1
Straight grid, because back side silicon nitride 3 and backside oxide aluminium film 4 are provided with lbg area, when printing aluminium paste forms alum gate line 2, aluminium
Slurry filling is to lbg area so that alum gate line 2 forms localized contact with P-type silicon 5, can be by electric transmission to alum gate line 2, with aluminium
The intersecting silver-colored main grid 1 of the back of the body of grid line 2 then collects the electronics on alum gate line 2, it follows that alum gate line 2 described in the utility model plays
Open-circuit voltage Voc and short circuit current Jsc is improved, reduces minority carrier recombination rate, and the effect of transmission electronics, it is alternative existing
There is full aluminum back electric field in one side solar cell, not only reduce silver paste and the dosage of aluminium paste, reduce production cost, and realize double
Face absorbs luminous energy, is significantly expanded the application of solar cell and improves photoelectric transformation efficiency.
The silver-colored main grid 1 of the back of the body described in the utility model can also be in interval point in addition to being illustrated in figure 6 the setting of continuous straight grid
Section is set, as shown in Figure 7.It can also be in that space segmentation is set, and be connected between each adjacent sectional by connected region, such as Fig. 8 institutes
Show.Connected region can be the combination of several figures of triangle, quadrangle, pentagon, circle, arc or more, connected region
At least one, the width of connected region is 0.01-4.5mm.
It should be noted that when setting 2 groups or more than 2 groups lbg units 9 in each lbg area, each group swashs
Light slotted unit 9 be arranged in parallel, and the spacing between two adjacent groups lbg unit 9 is 5-480 μm.
Every group of lbg unit 9 includes at least one lbg unit 9, the pattern of lbg unit 9 for it is circular,
Ellipse, triangle, quadrangle, pentagon, hexagon, cross or star.
Further illustrated below by instantiation：
1. the pattern identical situation of the lbg unit 9 in each lbg area：
1.1 is identical with the group pattern of lbg unit 9
1.1.1 such as Fig. 9, each lbg area are provided with 1 group of lbg unit 9, and lbg unit 9 is continuous bar
Shape rectangle, the length of lbg unit 9 are identical with alum gate line length；Or the length of lbg unit 9 is than alum gate line length
Spend short 0.01-5mm；Or the length of lbg unit 9 is longer 0.01-5mm than alum gate line length.
1.1.2 such as Figure 10, each lbg area is provided with 2 groups or more than 2 groups lbg units 9（Example is 3 in figure
Group）, each group lbg unit be arranged in parallel, and the spacing between two adjacent groups lbg unit is 5-480 μm.Lbg
Unit 9 is continuous strip rectangle, and the length of lbg unit 9 is identical with alum gate line length；Or lbg unit 9
Length is shorter 0.01-5mm than alum gate line length；Or the length of lbg unit 9 is longer 0.01-5mm than alum gate line length.
1.1.3 such as Figure 11, each lbg area is provided with 1 group of lbg unit 9, and lbg unit 9 is along alum gate line
Bearing of trend compartment arranges, with organize the pattern of lbg unit 9 can be circle, ellipse, triangle, quadrangle, pentagon,
Hexagon, cross or star, example is rectangle in figure.
1.1.4 such as Figure 12, each lbg area is provided with 2 groups or more than 2 groups lbg units 9（Example is 3 in figure
Group）, each group lbg unit be arranged in parallel, and the spacing between two adjacent groups lbg unit is 5-480 μm.Lbg
Unit 9 is arranged by compartment, and the pattern of lbg unit 9 can be circle, ellipse, triangle, quadrangle, pentagon, six sides
Shape, cross or star, example is rectangle in figure.
1.2 differ with the pattern of group lbg unit 9
1.2.1 such as Figure 13, each lbg area are provided with 1 group of lbg unit 9, and lbg unit 9 presses compartment
Arrangement, the pattern of lbg unit 9 can be circle, ellipse, triangle, quadrangle, pentagon, hexagon, cross or star
Shape, the pattern of lbg unit 9 are incomplete same.
1.2.2 such as Figure 14, each lbg area is provided with 2 groups or more than 2 groups lbg units 9, lbg unit 9
Arranged along alum gate line bearing of trend compartment, the pattern of lbg unit 9 can be continuous long line segment, circle, ellipse, triangle
Shape, quadrangle, pentagon, hexagon, cross or star, the lbg unit 9 that difference is organized in lbg unit 9 arrange
Partly different or all different, example is the whole different situations of different groups of lbg units 9 in figure.
2. the incomplete same situation of the pattern of the lbg unit 9 in different lbg areas：
Single lbg area is taken to be combined in above-mentioned Fig. 9-Figure 14, such as Figure 15, or except lbg unit 9 to connect
Outside continuous long line segment situation, with one of which situation to different lbgs in 1.1.1-1.1.4 and 1.2.1-1.2.2 situations
Area carries out different arrangements.
It should be noted that the spacing distance under different situations between lbg area can be with identical above, also can be different.
Spacing distance with the two neighboring lbg unit 9 of group lbg unit 9 is 0.01-50mm, with group lbg list
Spacing distance between member 9 can be with identical, also can be different.
The width in lbg area described in the utility model is 10-500 μm；Alum gate line 2 below lbg area
Width be more than the width in lbg area, the width of alum gate line 2 is 30-550 μm.Selected in the above-mentioned width of alum gate line 2 larger
Such as 500 μm of numerical value, and multigroup lbg area can be located at same by the selection of lbg sector width side by side compared with such as 40 μm of fractional value
On alum gate line 2, ensure that alum gate line 2 and P-type silicon 5 there are enough contacts area.
To sum up, p-type double-sided solar battery described in the utility model, which changes, is provided with a plurality of alum gate line 2 be arrangeding in parallel, no
Only substitute full aluminum back electric field in existing one side solar cell and realize back side extinction, be additionally operable to carry on the back the secondary grid structure in silver electrode and use
Make conduction electronics.P-type double-sided solar battery described in the utility model is made, silver paste and the dosage of aluminium paste can be saved, reduces life
Cost is produced, and realizes two-sided absorption luminous energy, the application of solar cell is significantly expanded and improves photoelectric transformation efficiency.
Above disclosed is only a kind of the utility model preferred embodiment, can not limit this practicality with this certainly
New interest field, therefore the equivalent variations made according to the utility model claims, still belong to what the utility model was covered
Scope.
Claims (10)
1. a kind of double-sided solar electricity generation system, it is characterised in that including double-sided solar battery assembly array and around double
The catoptric system of face solar cell module array surrounding, the catoptric system is by angle-adjusting bracket and for reflected sunlight
Optical element composition, the optical element is on the angle-adjusting bracket.
2. double-sided solar electricity generation system as claimed in claim 1, it is characterised in that the double-sided solar battery component battle array
Row are laterally set, and the catoptric system is located at the lower section of the double-sided solar battery assembly array, sunlight is reflexed to two-sided
The back side of solar cell module array.
3. double-sided solar electricity generation system as claimed in claim 1, it is characterised in that the double-sided solar battery component battle array
Row are vertically arranged, and the catoptric system reflexes to sunlight the front and back of double-sided solar battery assembly array.
4. double-sided solar electricity generation system as claimed in claim 2 or claim 3, it is characterised in that the angle-adjusting bracket can
The angle of optical element is adjusted according to current position of sun, the sunlight for being irradiated to optical element surface is reflexed to double-sided solar
Surfaces of cell.
5. double-sided solar electricity generation system as claimed in claim 4, it is characterised in that the catoptric system is with two or more
Different-diameter is set around double-sided solar battery assembly array.
6. double-sided solar electricity generation system as claimed in claim 1, it is characterised in that the optical element of the reflected sunlight
For speculum, aluminium foil or apply white paint plate.
7. double-sided solar electricity generation system as claimed in claim 1, it is characterised in that the double-sided solar battery component battle array
It is classified as p-type double-sided solar battery assembly array or N-type double-sided solar battery assembly array.
8. double-sided solar electricity generation system as claimed in claim 1, it is characterised in that the solar cell module array is
P-type double-sided solar battery assembly array, it includes the p-type double-sided solar battery of array setting, the p-type double-sided solar
Battery includes carrying on the back silver-colored main grid, alum gate line, back side silicon nitride, backside oxide aluminium film, P-type silicon, N-type emitter stage, front side silicon nitride silicon
Film and positive silver electrode；The back side silicon nitride, backside oxide aluminium film, P-type silicon, N-type emitter stage, front side silicon nitride film and positive silver
Electrode stacks gradually connection from bottom to up；
The back side silicon nitride and backside oxide aluminium film form the 30-500 laser be arrangeding in parallel after lbg and opened
Groove area, at least 1 group of lbg unit is set in each lbg area, and the alum gate line passes through lbg area and P-type silicon
It is connected；The alum gate line is with carrying on the back silver-colored main grid vertical connection.
9. double-sided solar electricity generation system as claimed in claim 8, it is characterised in that when setting 2 in each lbg area
When group or more than 2 groups lbg units, each group lbg unit be arranged in parallel, between two adjacent groups lbg unit
Spacing is 5-480 μm；
Every group of lbg unit includes at least one lbg unit, the pattern of lbg unit is circular, ellipse,
Triangle, quadrangle, pentagon, hexagon, cross or star.
10. double-sided solar electricity generation system as claimed in claim 9, it is characterised in that every group of lbg unit includes one
Individual pattern is the rectangular lbg unit of strip；With group lbg unit along alum gate line bearing of trend interval type configuration,
The spacing distance of two neighboring lbg unit is 0.01-50mm；The silver-colored main grid of the back of the body is continuous straight grid；Or the back of the body silver master
Grid are set in space segmentation；Or the silver-colored main grid of the back of the body is set in space segmentation, is connected between each adjacent sectional by connected region.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106911302A (en) * | 2017-03-03 | 2017-06-30 | 广东爱康太阳能科技有限公司 | A kind of double-sided solar electricity generation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911302A (en) * | 2017-03-03 | 2017-06-30 | 广东爱康太阳能科技有限公司 | A kind of double-sided solar electricity generation system |
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