CN102280511B - Dense array concentrating solar energy photovoltaic device - Google Patents
Dense array concentrating solar energy photovoltaic device Download PDFInfo
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- CN102280511B CN102280511B CN201110242366.6A CN201110242366A CN102280511B CN 102280511 B CN102280511 B CN 102280511B CN 201110242366 A CN201110242366 A CN 201110242366A CN 102280511 B CN102280511 B CN 102280511B
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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
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- 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 invention relates to a dense array concentrating solar energy photovoltaic device, and belongs to the field of photovoltaic. The dense array concentrating solar energy photovoltaic device comprises a Fresnel lens array, a plane substrate and at least two photo cells, wherein the Fresnel lens array is arranged at a top layer and is an integrated lens; the upper surface of the Fresnel lens is a plane and the lower surface of the Fresnel lens is provided with at least two groups of concentric ring-shaped saw teeth; each group of concentric ring-shaped saw teeth forms a Fresnel lens; the Fresnel lenses are arranged in an array mode; the plane substrate is arranged at a bottom layer; the at least two photo cells are arranged on the upper surface of the plane substrate and in a photo cell array mode; the number of the photo cells in the photo cell array is the same as the number of the Fresnel lens in the Fresnel lens array; and each photo cell corresponds to one Fresnel lens. The array concentrating solar energy photovoltaic device is simple in heat dissipation, short in concentrating focus and high in solar energy utilization rate, and does not require electrode arrangement inside a photo cell chip.
Description
Technical field
The present invention relates to photovoltaic field, relate in particular to a kind of closely spaced array formula concentrating solar photovoltaic device.
Background technology
Solar energy is to have one of clean energy resource of using value most, is the important component part of following basic energy resource, and solar energy is directly converted to electric energy by solar photovoltaic technology.
But the price of solar power system is always high for a long time, its main cause is because the density of solar energy is low, and the transformation efficiency of solar cell is not high.In order to reduce the price of solar power system, high concentration solar photovoltaic power generation technology arises at the historic moment.Concentrating photovoltaic power generation technology is amplified hundreds and thousands of times by transmission or reflection by the solar energy receiving, and then the energy of amplification is focused on the high little photocell of efficiency.This technology utilizes large area, cheap beam condensing unit to replace expensive and single crystal silicon materials in short supply, and then reaches the object that significantly reduces solar energy power generating cost, makes solar energy power generating have the ability with conventional energy resource competition.Have quality gently, on year-on-year basis energy output than the high 30-40% of flat plate cell, on year-on-year basis price be the half of flat plate cell, easy for installation, long service life, reliability high, handsome in appearance generous, be easy to combine the features such as forming large-scale photo-voltaic power generation station of installing on a large scale, therefore concentrating photovoltaic power generation technology has become the main trend of following solar photovoltaic technology.
In prior art, transmission-type concentrating photovoltaic power generation mainly adopts traditional Fresnel (Fresnel) lens as converging optical element, by a large amount of solar light focusings to more piece solar photocell.In order to gather more sunlights to realize high concentration ratio, in prior art for example, for Fresnel lens bore larger (: 50mm × 50mm) conventionally of concentrating photovoltaic power generation, and the bore of traditional Fresnel lens is difficult to do greatly, in addition, for example, due to the hot spot very little (focusing on 2mm × 2mm) after focusing on, cause being like this radiated the solar energy high concentration on each photocell chip part, easily damage even burns out photocell chip, there is a very large heat radiation difficult problem in this kind of technology, for the sun that makes to focus on solar cell is evenly distributed by force, in this kind of condensation photovoltaic device, generally need to add secondary dodging device.In addition, the condensation photovoltaic device of existing employing heavy caliber Fresnel lens also exist focus on the long so that photovoltaic devices of focal length cannot miniaturization, and the shortcomings such as electrode of must arranging in photocell chip.
Summary of the invention
The embodiment of the present invention provides a kind of closely spaced array formula concentrating solar photovoltaic device, for solve that the solar cell heat radiation of existing heavy caliber Fresnel concentrating photovoltaic power generation technology is difficult, optically focused focal length is long and photocell chip in the problems such as electrode of must arranging.Array concentrating solar photovoltaic device radiation provided by the present invention is simple, optically focused focal length is short, the high photocell chip internal of solar energy utilization ratio is without the electrode of arranging.
A kind of closely spaced array formula concentrating solar photovoltaic device, comprising: array of fresnel lenses 1, planar substrates 2 and at least two photocells 3.
Described array of fresnel lenses 1 is in top layer; Described array of fresnel lenses 1 is an overall lens, and upper surface is plane, and lower surface has the sawtooth of the one-tenth concentric ring-shaped that at least two groups are identical; Described every group of identical donut forms a Fresnel lens, all Fresnel lens composition array formats.
Described planar substrates 2 is arranged at bottom.
Described at least two photocells 3 are arranged at the upper surface of described planar substrates 2 and arrange as photovoltaic cell arrays form, the number of the photocell 3 in described photovoltaic cell arrays is identical with the Fresnel lens number in described array of fresnel lenses 1, and the every corresponding Fresnel lens of photocell 3.
Every described photocell 3 is positioned on the focal beam spot of these photocell 3 corresponding Fresnel lenses.
The lower surface peripheral shape of each described Fresnel lens is square, and the lower surface Fresnel lens lower surface in full accord and each of any two Fresnel lenses is ceded territory close-packed arrays together without dividing.
Every photocell 3 is made up of sheet metal 4 and the light area 5 that is nested in described sheet metal 4 central authorities; The area of the light area 5 of arbitrary described photocell 3 is less than the lower surface area of these photocell 3 corresponding Fresnel lenses, is provided with the electric current output electrode 6 of described photocell 3 on the sheet metal 4 of every photocell 3.
Described planar substrates 2 comprises: heat dissipation metal base plate 9 and plating insulating radiation film 8 thereon; Described photocell 3 is fixed on described heat dissipation metal base plate 9 by insulating radiation film 8.
The thermal coefficient of expansion of described heat dissipation metal base plate 9 is identical with the thermal coefficient of expansion of described sheet metal 4.
This device also comprises at least two compound curved surface speculums between described array of fresnel lenses 1 and described planar substrates 2.
Described at least two compound curved surface speculum close-packed arrays become compound curved surface reflection mirror array, and the compound curved surface speculum number in compound curved surface reflection mirror array is identical with the number of the photocell 3 in photovoltaic cell arrays; Photocell 3 of bottom light-emitting window place sealing-in of each compound curved surface speculum, upper end open is packaged on the corresponding Fresnel lens lower surface of described photocell 3, and the inner surface of each described compound curved surface speculum is reflecting surface.
Described compound curved surface speculum is composite parabolic speculum 10.
Described compound curved surface speculum is Composite Double curved reflector 11.
This device also comprises at least two funnel type planoconvex spotlights 12 between described array of fresnel lenses 1 and planar substrates 2.
Above-mentioned planoconvex spotlight 12 close-packed arrays become planoconvex spotlight array, and the number of the planoconvex spotlight 12 in described planoconvex spotlight array is identical with the number of the photocell 3 in described photovoltaic cell arrays; Each described planoconvex spotlight 12 is corresponding to a photocell 3 and the Fresnel lens corresponding with this photocell 3, and the optical axis coincidence of the optical axis Fresnel lens corresponding with it of each described planoconvex spotlight 12; The light areas of the size photocell 3 corresponding with it of the planar ends of each described planoconvex spotlight 12 etc. are large, and described planar ends is close to the light area 5 of described photocell 3; The convex surface end of each described planoconvex spotlight 12 does not contact with the lower surface of its corresponding Fresnel lens, and the bore of described convex surface end equates with the bore of these planoconvex spotlight 12 corresponding Fresnel lenses.
The side of described planoconvex spotlight 12 is coated with reflector layer.
For the concentrating photovoltaic power generation skill of existing employing heavy caliber Fresnel lens, the above-mentioned array concentrating solar photovoltaic device that the embodiment of the present invention provides has the following advantages:
1, the light intensity on photocell diminishes and obtains disperseing heat radiation, simultaneously need not secondary dodging device.
2, focal beam spot is less, and the accuracy of solar tracking is required to reduce.With heavy caliber Fresnel lens have equal optically focused than in the situation that, photronic usable floor area reduces greatly.
3, in photocell chip, do not contain electrode, electrode is just arranged at photocell chip periphery, and solar energy utilization ratio is improved.
4, the optically focused focal length of Fresnel lens can do very littlely, effectively reduces the height of photovoltaic electrification component, is conducive to equipment miniaturization.
On the basis with above-mentioned advantage, for the array concentrating solar photovoltaic device with compound curved surface speculum providing for the embodiment of the present invention, no longer need sun-following device, solar energy utilization ratio is further enhanced.
On the basis with above-mentioned advantage, for the array concentrating solar photovoltaic device with planoconvex spotlight providing for the embodiment of the present invention, optically focused focal length further shortens, and solar energy utilization ratio is further enhanced.
Brief description of the drawings
A kind of closely spaced array formula concentrating solar photovoltaic apparatus structure schematic diagram that Fig. 1 provides for the embodiment of the present invention one;
Fig. 2 is the lower surface schematic diagram of array of fresnel lenses 1 in Fig. 1;
Fig. 3 is the A-A cutaway view of the device of array concentrating solar photovoltaic shown in Fig. 1;
The another kind of array concentrating solar photovoltaic apparatus structure schematic diagram that Fig. 4 provides for the embodiment of the present invention one;
Fig. 5 is a photocell 3 and is used as the connection diagram between the planar substrates 2 of heating panel;
Fig. 6 has one of array concentrating solar photovoltaic apparatus structure schematic diagram of composite parabolic speculum for what the embodiment of the present invention two provided;
Two of the array concentrating solar photovoltaic apparatus structure schematic diagram with composite parabolic speculum that Fig. 7 provides for the embodiment of the present invention two;
Fig. 8 has one of array concentrating solar photovoltaic apparatus structure schematic diagram of Composite Double curved reflector for what the embodiment of the present invention two provided;
Two of the array concentrating solar photovoltaic apparatus structure schematic diagram with Composite Double curved reflector that Fig. 9 provides for the embodiment of the present invention two;
Figure 10 has one of array concentrating solar photovoltaic apparatus structure schematic diagram of planoconvex spotlight for what the embodiment of the present invention three provided;
Two of the array concentrating solar photovoltaic apparatus structure schematic diagram with planoconvex spotlight that Figure 11 provides for the embodiment of the present invention three;
In figure: 1, array of fresnel lenses, 2, planar substrates, 3, photocell, 4, sheet metal, 5, light area, 6, electrode, 7, insulating tape, 8, insulating radiation film, 9, heat dissipation metal base plate, 10, composite parabolic speculum, 11, Composite Double curved reflector, 12, planoconvex spotlight.
Embodiment
The embodiment of the present invention provides a kind of closely spaced array formula concentrating solar photovoltaic device, in this device, adopt the array of fresnel lenses of several small-bore Fresnel lens compositions to substitute heavy caliber Fresnel lens of the prior art, and the photocell of corresponding heavy caliber Fresnel lens in prior art is reduced into several respectively little photocells of the Fresnel lens in corresponding described array of fresnel lenses, solve the problem that on the short and photocell of optically focused focal length in prior art, amount of localized heat is too concentrated.Especially, the array of fresnel lenses that the embodiment of the present invention provides is an overall lens.
Below in conjunction with accompanying drawing, illustrate embodiments of the present invention.
Embodiment mono-
A kind of closely spaced array formula concentrating solar photovoltaic apparatus structure schematic diagram that Fig. 1 provides for the embodiment of the present invention one, this device comprises: array of fresnel lenses 1, planar substrates 2 and at least two photocells 3.
Array of fresnel lenses 1, in top layer, is an overall lens, and upper surface is plane, and lower surface has the sawtooth of the one-tenth concentric ring-shaped that at least two groups are identical, and every group of identical donut forms a Fresnel lens, all Fresnel lens composition array formats.Planar substrates 2 is arranged at bottom.Photocell 3 is arranged at planar substrates 2 upper surfaces and arranges as photovoltaic cell arrays form, and the number of the photocell 3 in photovoltaic cell arrays is identical with the Fresnel lens number in array of fresnel lenses 1, and the every corresponding Fresnel lens of photocell.Particularly, each photocell 3 is positioned at the focal beam spot position of its corresponding Fresnel lens.In Fig. 1, the multiple parallel arrow of fresnel lens array 1 top represents vertical incidence sunlight, and the represented direction of arrow is the optical axis direction of described Fresnel Lenses.
In fact, the array of fresnel lenses described in the present embodiment and later all embodiment is all the capable array of M × N, and wherein, the equal value of M and N is positive integer, and M when different with N value be 1.Without loss of generality, below for convenience of representing, in the accompanying drawing of all embodiment of the present invention, all array of fresnel lenses is expressed as to 3 × 4 matrix and describes.
Fig. 2 is the lower surface schematic diagram of array of fresnel lenses 1 in Fig. 1.As seen from Figure 2: the lower surface of the each Fresnel lens in array of fresnel lenses 1 has concentric ring-shaped sawtooth and peripheral shape is square, and all Fresnel lens lower surfaces without point ceding territory close-packed arrays together.
Existing employing heavy caliber Fresnel lens carries out in the technology of concentrating photovoltaic power generation, considers the requirement that day is followed the trail of, although focal beam spot is very little, photocell chip still needs the larger of design.In such cases, the photogenerated current size that produces everywhere on photocell sensitive surface is uneven and cannot cross over whole photocell and be transferred to its outer rim, therefore, in existing heavy caliber Fresnel lens focusing photovoltaic generation module, electric current output electrode need to be set conventionally in photocell chip, increase like this complexity of photocell production technology, also can make photronic effective sensitive surface skewness.
For solving the described difficult problem of prior art effectively to improve the utilance of solar energy, photocell in the array concentrating solar photovoltaic device that the embodiment of the present invention one provides is made up of sheet metal and the light area that is nested in described sheet metal central authorities, specifically as shown in Figure 3.Fig. 3 is the A-A cutaway view of the device of array concentrating solar photovoltaic shown in Fig. 1.Wherein, the light area 5 of every photocell 3 is nested in described sheet metal 4 central authorities, the area of the light area 5 of arbitrary photocell 3 is less than the lower surface area of these photocell 3 corresponding Fresnel lenses, is provided with the electric current output electrode 6 of this photocell 3 on the sheet metal 4 of every photocell 3.In Fig. 3, for convenience of representing, only draw 4 electrodes 6 and do not draw the actual line of electrode 6, while specifically enforcement, number of electrodes and line arrange according to actual needs.
Preferably, between any two adjacent photocells 3 by insulating tape 7 isolation of insulating, as shown in Figure 4.
Preferably, in the array concentrating solar photovoltaic device that the embodiment of the present invention one provides, planar substrates 2, except the fixed head for as photocell 3, also can use as heating panel simultaneously.Fig. 5 is a photocell 3 and is used as the connection diagram between the planar substrates 2 of heating panel.As shown in Figure 5: when planar substrates 2 is during as heating panel, planar substrates 2 can comprise insulating radiation film 8 and heat dissipation metal base plate 9.Photocell 3 is fixed on heat dissipation metal base plate 9 by insulating radiation film 8.Insulating radiation film 8 is for making to have good thermo-contact between photocell 3 and telegraph circuit thereof and heat dissipation metal base plate 9 and non-conductive.In prior art, because photocell is subject to the inhomogeneous photocell that causes of light local hot and easily burn out photocell chip, in the embodiment of the present invention one due to heavy caliber Fresnel lens is split as to small-bore array of fresnel lenses, select corresponding each the piece Fresnel lens of less photocell chip simultaneously, make like this luminous intensity focusing on every photocell be reduced, avoid the heat on photocell too concentrated, obviously, selecting after rational heat dissipation metal base plate, photronic heat dissipation problem obtains further optimizing and solving on the basis of the above.
Preferably, the thermal coefficient of expansion of heat dissipation metal base plate 9 is identical with the thermal coefficient of expansion of the sheet metal 4 in photocell 3, thereby in the time of variations in temperature, make the expansion of sheet metal 4 and heat dissipation metal base plate 9 consistent and even, the electrical connector between each like this sheet metal just can not thrown off in the time of variations in temperature.
In sum, for the concentrating photovoltaic power generation skill of existing employing heavy caliber Fresnel lens, the above-mentioned array concentrating solar photovoltaic device that the embodiment of the present invention one provides has the following advantages:
1, because optically focused bore is little, therefore after optically focused, be radiated energy on each photocell little, can disperse like this heat radiation, simultaneously need not secondary dodging device.
2, make full use of the spotlight effect of convergent lens, conventionally can focus on very little hot spot (for example focus on multiple and can reach 10,000 times), because Fresnel Lenses bore is smaller, therefore the relative hot spot of photocell chip is larger, can effectively reduce like this accuracy of solar tracking.In addition, because focal beam spot is less, therefore with heavy caliber Fresnel lens have equal optically focused than in the situation that, greatly reduced photronic usable floor area in prior art.
3, in photocell chip, do not contain electrode, electrode is just arranged at photocell chip periphery, and solar energy utilization ratio is improved.
4, in the photovoltaic devices providing due to the embodiment of the present invention one, existing heavy caliber Fresnel lens is converted into multiple small-bore array of fresnel lenses, therefore, the optically focused focal length of the each Fresnel lens in the embodiment of the present invention one can do very littlely (for example, than little ten times of conventional heavy caliber Fresnel lenses), make like this height of photovoltaic electrification component effectively be reduced, be conducive to equipment miniaturization, transport, installation etc. are all very convenient.
Embodiment bis-
Consider in the time that array concentrating solar photovoltaic application of installation that the embodiment of the present invention one provides is in the photovoltaic generating system that does not use sun-following device, if altitude of the sun variation can cause being incident to the sunlight non-normal incidence of array of fresnel lenses, now part edge light can not arrive on the corresponding photronic light area of each Fresnel lens after each effective Fresnel lens refractive, and solar energy utilization ratio reduces.For head it off, on the basis of above-described embodiment one, the embodiment of the present invention two provides again another closely spaced array formula concentrating solar photovoltaic device, has added: at least two compound curved surface speculums between described array of fresnel lenses 1 and planar substrates 2 in any one closely spaced array formula concentrating solar photovoltaic device that this kind of device provides at embodiment mono-.Described at least two compound curved surface speculum close-packed arrays become compound curved surface reflection mirror array, and the compound curved surface speculum number in compound curved surface reflection mirror array is identical with photocell 3 numbers in photovoltaic cell arrays.Photocell 3 of bottom light-emitting window place sealing-in of each compound curved surface speculum, upper end open is packaged on the corresponding Fresnel lens lower surface of this photocell 3, and the inner surface of each compound curved surface speculum is reflecting surface.
Incident sunlight arrives bottom light hole by reflection several times in this kind of compound curved surface speculum, light stream is lost less, especially can effectively collect for the sunlight of oblique incidence, reach theoretical maximum optically focused ratio, the operation of this kind of concentrator does not need tracking position of sun at any time, only need be according to regulating orientation season, simple in structure, manipulation convenience, much more no longer due in Salar light-gathering technology, compound curved surface mirror concentrator has been ripe technology, to explain herein.
The array concentrating solar photovoltaic device providing in the present embodiment two can possess the various additional technical features described in embodiment mono-equally, for example, using planar substrates simultaneously as heating panel use etc., no longer describe in detail herein.
Preferably, described compound curved surface speculum is that cross section is parabolical composite parabolic speculum (CPC, Compound Parabolic Collector), what be illustrated in figure 6 that the embodiment of the present invention two provides has one of array concentrating solar photovoltaic apparatus structure schematic diagram of composite parabolic speculum, and Fig. 6 shown device is the array concentrating solar photovoltaic device that has added several composite parabolic speculums 10 on the basis of Fig. 1 shown device.Figure 7 shows that two of the array concentrating solar photovoltaic apparatus structure schematic diagram with composite parabolic speculum that the embodiment of the present invention two provides, in this device between any two adjacent photocells 3 with insulating tape 7 insulation isolation.
Preferably, described compound curved surface speculum is that cross section is hyp Composite Double curved reflector (CHC, Compound Hyperbolic Collector), what be illustrated in figure 8 that the embodiment of the present invention two provides has one of array concentrating solar photovoltaic apparatus structure schematic diagram of Composite Double curved reflector, and Fig. 8 shown device is on the basis of Fig. 1 shown device, to have added the array concentrating solar photovoltaic device that several Composite Double curved reflectors 11 obtain.Figure 9 shows that two of the array concentrating solar photovoltaic apparatus structure schematic diagram with Composite Double curved reflector that the embodiment of the present invention provides, in this device between any two adjacent photocells 3 with insulating tape 7 insulation isolation.
Obviously, what the embodiment of the present invention provided has advantages of that the array concentrating solar photovoltaic device of compound curved surface speculum also has the foregoing array concentrating solar photovoltaic device that does not contain compound curved surface speculum, although structure is more more complex, but this kind of device can be used in the photovoltaic system that there is no sun-following device, and solar energy utilization ratio is higher.
Embodiment tri-
Be similar to embodiment bis-, for the solar energy utilization ratio of the array concentrating solar photovoltaic device that further raising embodiment mono-provides, on the basis of embodiment mono-, the embodiment of the present invention three provides again another closely spaced array formula concentrating solar photovoltaic device, in any one closely spaced array formula concentrating solar photovoltaic device that this kind of device provides at embodiment mono-, has added at least two funnel type planoconvex spotlights.
There is one of array concentrating solar photovoltaic apparatus structure schematic diagram of planoconvex spotlight for what the embodiment of the present invention three provided as shown in figure 10.As seen from Figure 10, this device has added at least two funnel type planoconvex spotlights 12 between array of fresnel lenses 1 and planar substrates 2 on basis shown in Fig. 1.Described at least two planoconvex spotlights 12 close-packed arrays become planoconvex spotlight array, and the number of the planoconvex spotlight 12 in planoconvex spotlight array is identical with the number of the photocell 3 in photovoltaic cell arrays; Each planoconvex spotlight 12 is corresponding to a photocell 3 and the Fresnel lens corresponding with this photocell 3, and the optical axis coincidence of the optical axis Fresnel lens corresponding with it of each planoconvex spotlight 12; The size of the planar ends of each planoconvex spotlight 12 with it corresponding photronic light area etc. large, and described planar ends is close to the light area 5 of its corresponding photocell 3; The convex surface end of each planoconvex spotlight 12 does not contact with the lower surface of its corresponding Fresnel lens, and described convex surface port footpath equates with the bore of this Fresnel lens.On the optical axis direction of Fresnel lens, between array of fresnel lenses 1 and planoconvex spotlight array, there is certain airspace.
Preferably, the side of described planoconvex spotlight is coated with reflector layer, for the sunlight that is incident to side is reflected.
Obviously, each planoconvex spotlight 12 is first as convex lens, for the sunlight after its corresponding Fresnel lens refractive is further focused on to their corresponding photocells, secondly the planoconvex spotlight 12 that, side has a reflector layer also can will enter the further direct light battery 3 after total reflection back and forth of sunlight that is incident upon its side after planoconvex spotlight 12.Like this, in the time that altitude of the sun is lower, the sunlight being incident in array of fresnel lenses 1 can be refracted on photocell by Fresnel lens and planoconvex spotlight 12 as much as possible, and the solar energy utilization ratio of photovoltaic devices is further enhanced.
Wherein, described planoconvex spotlight is made up of transparent material.
The array concentrating solar photovoltaic device providing in the present embodiment three can possess the various additional technical features described in embodiment mono-equally, for example, using planar substrates simultaneously as heating panel use etc., no longer describe in detail herein.
Two of the array concentrating solar photovoltaic apparatus structure schematic diagram with planoconvex spotlight that Figure 11 provides for the embodiment of the present invention three, in this device between any two adjacent photocells 3 with insulating tape 7 insulation isolation.
Obviously, what the embodiment of the present invention provided has advantages of that the array concentrating solar photovoltaic device of compound curved surface speculum not only has the foregoing array concentrating solar photovoltaic device that does not contain compound curved surface speculum, and due to the use of planoconvex spotlight, not only solar energy utilization ratio is improved, optically focused focal length also can further shorten, apparatus structure is simple, is easy to realize.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. a closely spaced array formula concentrating solar photovoltaic device, is characterized in that, comprising: array of fresnel lenses (1), planar substrates (2) and at least two photocells (3);
Described array of fresnel lenses (1) is in top layer; Described array of fresnel lenses (1) is an overall lens, and upper surface is plane, and lower surface has the sawtooth of the one-tenth concentric ring-shaped that at least two groups are identical; Described every group of identical donut forms a Fresnel lens, all Fresnel lens composition array formats;
Described planar substrates (2) is arranged at bottom;
Described at least two photocells (3) are arranged at the upper surface of described planar substrates (2) and arrange as photovoltaic cell arrays form, the number of the photocell (3) in described photovoltaic cell arrays is identical with the Fresnel lens number in described array of fresnel lenses (1), and the corresponding Fresnel lens of every photocell (3);
Every described photocell (3) is positioned on the focal beam spot of the corresponding Fresnel lens of this photocell (3);
The lower surface peripheral shape of each described Fresnel lens is square, and the lower surface Fresnel lens lower surface in full accord and each of any two Fresnel lenses is ceded territory close-packed arrays together without dividing;
Every photocell (3) is by sheet metal (4) and be nested in central light area (5) formation of described sheet metal (4); The area of the light area (5) of arbitrary described photocell 3 is less than the lower surface area of the corresponding Fresnel lens of this photocell (3), is provided with the electric current output electrode (6) of described photocell (3) on the sheet metal (4) of every photocell (3).
2. a kind of closely spaced array formula concentrating solar photovoltaic device as claimed in claim 1, is characterized in that, described planar substrates (2) comprising: heat dissipation metal base plate (9) and plating insulating radiation film (8) thereon; Described photocell (3) is fixed on described heat dissipation metal base plate (9) by insulating radiation film (8).
3. a kind of closely spaced array formula concentrating solar photovoltaic device as claimed in claim 2, is characterized in that: the thermal coefficient of expansion of described heat dissipation metal base plate (9) is identical with the thermal coefficient of expansion of described sheet metal (4).
4. a kind of closely spaced array formula concentrating solar photovoltaic device as claimed any one in claims 1 to 3, it is characterized in that, this device also comprises at least two compound curved surface speculums that are positioned between described array of fresnel lenses (1) and described planar substrates (2);
Described at least two compound curved surface speculum close-packed arrays become compound curved surface reflection mirror array, and the compound curved surface speculum number in compound curved surface reflection mirror array is identical with the number of the photocell (3) in photovoltaic cell arrays; A photocell of bottom light-emitting window place sealing-in (3) of each compound curved surface speculum, upper end open is packaged on the corresponding Fresnel lens lower surface of described photocell (3), and the inner surface of each described compound curved surface speculum is reflecting surface.
5. a kind of closely spaced array formula concentrating solar photovoltaic device as claimed in claim 4, is characterized in that, described compound curved surface speculum is composite parabolic speculum (10).
6. a kind of closely spaced array formula concentrating solar photovoltaic device as claimed in claim 4, is characterized in that, described compound curved surface speculum is Composite Double curved reflector (11).
7. a kind of closely spaced array formula concentrating solar photovoltaic device as claimed any one in claims 1 to 3, it is characterized in that, this device also comprises at least two funnel type planoconvex spotlights (12) that are positioned between described array of fresnel lenses (1) and planar substrates (2);
Above-mentioned planoconvex spotlight (12) close-packed arrays becomes planoconvex spotlight array, and the number of the planoconvex spotlight (12) in described planoconvex spotlight array is identical with the number of the photocell (3) in described photovoltaic cell arrays; Each described planoconvex spotlight (12) is corresponding to a photocell 3 and the Fresnel lens corresponding with this photocell (3), and the optical axis coincidence of the optical axis Fresnel lens corresponding with it of each described planoconvex spotlight (12); The light areas of the size photocell corresponding with it (3) of the planar ends of each described planoconvex spotlight (12) etc. are large, and described planar ends is close to the light area (5) of described photocell (3); The convex surface end of each described planoconvex spotlight (12) does not contact with the lower surface of its corresponding Fresnel lens, and the bore of described convex surface end equates with the bore of the corresponding Fresnel lens of this planoconvex spotlight (12).
8. a kind of closely spaced array formula concentrating solar photovoltaic device as claimed in claim 7, is characterized in that, the side of described planoconvex spotlight (12) is coated with reflector layer.
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| CN103630951B (en) * | 2012-08-22 | 2016-08-03 | 陈鼎凌 | Light and heat collection Fresnel line focus lens |
| CN108323214A (en) * | 2015-12-01 | 2018-07-24 | 博立多媒体控股有限公司 | concentrating solar system |
| CN107154445A (en) * | 2016-03-03 | 2017-09-12 | 苏州升奥新能源有限公司 | A kind of solar cell encapsulation structure |
| CN106024961A (en) * | 2016-06-16 | 2016-10-12 | 昆山诃德新能源科技有限公司 | Dense array-type concentrating solar photovoltaic device |
| WO2018090277A1 (en) * | 2016-11-17 | 2018-05-24 | 博立多媒体控股有限公司 | Concentrated light-energy receiving device |
| CN106982027A (en) * | 2017-05-03 | 2017-07-25 | 成都菲斯特科技有限公司 | A kind of solar concentrating photovoltaic component |
| CN107834950B (en) * | 2017-12-11 | 2024-03-19 | 山东理工昊明新能源有限公司 | Photovoltaic building integrated power generation system |
| CN107959472A (en) * | 2017-12-21 | 2018-04-24 | 光隶新能源（南平）科技有限公司 | The photovoltaic module and lamps and lanterns of 3 times of electric energy output are improved by faint light power generation |
| CN108168079A (en) * | 2018-02-06 | 2018-06-15 | 江苏贝德莱特太阳能科技有限公司 | A kind of light collecting power generation and heat supply integrated system |
| CN110707168A (en) * | 2019-10-12 | 2020-01-17 | 成都中建材光电材料有限公司 | Film power generation glass with decoration function |
| CN111025437B (en) * | 2019-12-31 | 2023-06-27 | 武汉华中天勤防务技术有限公司 | Fresnel lens array, light guide energy collection system and preparation method |
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