CN103456824A - Tubular tracking concentrating photovoltaic module - Google Patents
Tubular tracking concentrating photovoltaic module Download PDFInfo
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- CN103456824A CN103456824A CN2013103445981A CN201310344598A CN103456824A CN 103456824 A CN103456824 A CN 103456824A CN 2013103445981 A CN2013103445981 A CN 2013103445981A CN 201310344598 A CN201310344598 A CN 201310344598A CN 103456824 A CN103456824 A CN 103456824A
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- 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
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- 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
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
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- 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
- H01L31/052—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
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- H—ELECTRICITY
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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- H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
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- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
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- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
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- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/10—The network having a local or delimited stationary reach
- H02J2310/12—The local stationary network supplying a household or a building
- H02J2310/14—The load or loads being home appliances
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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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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- 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
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention provides a tubular tracking concentrating photovoltaic module. The tubular tracking concentrating photovoltaic module comprises a concentrating system, a photovoltaic battery pack and a heat sink in good heat-conducting contact with the photovoltaic battery pack. The tubular tracking concentrating photovoltaic module is characterized in that the tubular tracking concentrating photovoltaic module is provided with a glass tube shell with the two ends closed, the concentrating photovoltaic battery pack applies tracking with the illuminated face toward the sunlight, and then efficient concentrating power generation can be performed. The tubular tracking concentrating photovoltaic module has the advantages of being low in cost, excellent in sealing performance, good in weather resistance, high in mechanical strength, strong in self-supporting force and long in service life.
Description
Technical field
the present invention relates to a kind of photovoltaic electrification component, relate in particular to a kind of tubulose concentrating photovoltaic assembly of following the tracks of sunray.
Background technology
solar energy has vast potential for future development as a kind of renewable green energy resource, solar power generation has become a kind of important method of utilization of new energy resources, in solar photovoltaic generation system, photovoltaic electrification component is the main devices that realizes opto-electronic conversion, is also a part of cost maximum in photovoltaic generating system.Current main flow photovoltaic module is tabular photovoltaic module, directly photovoltaic cell is encapsulated in glass plate, the sunray that receives normal irradiation intensity irradiates generating, the cost overwhelming majority of photovoltaic module is from photovoltaic cell on the one hand, the battery cost is difficult to that decrease is arranged again, causes the photovoltaic system cost high; On the other hand, tabular module is easy to be subject to windage, needs firm metallic support to be fixed, and cost is higher.In addition, module sensitive surface rear portion can form the bulk shadow region, badly influences the daylighting of back space, also can hinder the installation of photovoltaic module.
concentrating photovoltaic assembly adopts optical focusing system that normal sunray is converged after certain multiple to shine on photovoltaic cell component and is generated electricity, and can save a large amount of battery costs.Although followed the tracks of by condenser system, can make concentrating photovoltaic assembly obtain higher electrical generation efficiency, but because in general spotlight tracking process, needing to install additional motion tracer, not only increased a part of cost, and, because there are certain deviation in the available accuracy in motion tracer making, installation, running and system requirements, also can produce harmful effect to system operation reliability and efficiency.In addition, after photovoltaic concentration, photovoltaic cell component receives illumination density significantly increases, and for keeping the photovoltaic cell component generating efficiency, heat dissipation capacity also sharply increases thereupon.There are data to show, 1 ℃ of the every rising of photovoltaic battery temperature, generating efficiency decline 0.35% ~ 0.5% left and right, therefore need the extra heat abstractor that increases, and could keep the normal generating efficiency of photovoltaic cell component.In addition, transmission-type optically focused often adopts the organic material lens as Fresnel lens structure, this Fresnel lens structure often adopts polyolefine material to annotate the swaging flakiness, organic material inevitably aging, the light transmittance that is exposed to the sun in sunlight descends, and condensation photovoltaic battery component life-span and efficiency are affected.
in addition, general concentrating photovoltaic assembly multiple higher (from seven times to more than 1,000 times), can only receive direct light and reach seldom part scattered light, no matter Fresnel transmission-type or parabolic reflector formula structure, the scattered light of this class optical system of process is because off-design optically focused optical axis angle is larger, and most scattered lights all can't arrive the photovoltaic cell component surface.In overwhelming majority area, particularly be applicable to the urban district of distributed arrangement photovoltaic system, comprise more scattered light in the full irradiation of sunray, if can't effectively receive scattered light, can produce considerable influence to unit power assembly annual energy output, cause whole year generating efficiency to reduce, also increased the cost of electricity-generating of unit photovoltaic cell component.
tubular structure has good mechanical strength, particularly the clear glass pipe shell have lightweight, cost is very low, sealing property is excellent, good weatherability, mechanical strength large, self-supporting power reaches by force the remarkable advantages such as long service life.
Summary of the invention
it is more that the object of the invention is to overcome the battery that classic flat-plate photovoltaic module described above uses, steelframe support and packaging cost higher, be subject to windage, the problems such as inconvenient are installed; And traditional concentrating photovoltaic assembly complex structure, manufacturing cost is high, and the motion tracking cost of implementing single shaft or twin shaft is higher, and the long-time running reliability is not high, and traditional concentrating photovoltaic assembly can only receive the problems such as direct light substantially; The invention provides a kind of tubulose tracking light focusing photovoltaic assembly and comprise condenser system, photovoltaic cell component and the heat abstractor contacted with the photovoltaic cell component good heat conductive, it is characterized in that, described tubulose tracking light focusing photovoltaic assembly has the glass envelope of closed at both ends, and described condensation photovoltaic battery component is implemented sensitive surface towards sunshine tracking, implement the high-effective concentration generating.
traditional north and south axle of take arranges that uniaxiality tracking one-dimensional linear optically focused is example, defining the angle that traditional slot type parabolic concentrator photovoltaic module need to follow the tracks of around the north and south axial-rotation is β, the described β value of this patent can be specially angle between light vector that sunray is projected to the thing vertical plane and horizontal plane normal vector (as uniaxiality tracking is that the thing axle is arranged, the β value can be specially sunray be projected to the vectorial and horizontal plane normal vector of the light of north and south vertical plane between angle).
further, the glass envelope length of described tubulose tracking light focusing photovoltaic assembly is over 2.5 meters; Preferably, the glass envelope length of described tubulose tracking light focusing photovoltaic assembly is over 5 meters, can take full advantage of intensity and the self-supporting ability of glass envelope, simplify installation procedure, save material and cost of labor, reduce the non-effective part shared ratio in entire length of utilizing in concentrating photovoltaic assembly two ends simultaneously as far as possible, reduce the end effect impact.
further, described glass envelope diameter range is 30 millimeters～200 millimeters.
preferably, described glass envelope diameter range is 45 millimeters～150 millimeters, when obtaining larger light-receiving area, reduces the glass envelope wall thickness as far as possible, reduces costs.
further, the photovoltaic cell that forms described photovoltaic cell component is monocrystalline silicon battery or polycrystal silicon cell or cadmium telluride battery or CIGS thin-film solar cells etc.
preferably, monocrystalline silicon battery or polycrystal silicon cell or only size that above-mentioned two kind batteries cut or be combined to form and the go between different photovoltaic cell of described photovoltaic cell for adopting standard universal material and technique manufacture, with the existing photovoltaic industry production capacity of abundant digestibility and utilization.
further, the compound parabolic condenser system that described condenser system is the low light gathering multiplying power (Compound Parabolic Collector, CPC), the optical reflection face is arranged in bottom light photovoltaic cell components side, and the incident light usable reflection in the certain angle scope is formed to spotlight effect to the photovoltaic cell surface; Photovoltaic cell component, directly in the face of the sunray incident direction, can just can directly receive quite a high proportion of direct projection and scattered beam without the optical system reflection, improves the light utilization of this concentrating photovoltaic assembly, increases energy output.
preferably, described compound parabolic condenser system is one dimension compound parabolic condenser system, the optical reflection face of the photovoltaic cell left and right sides axially is strip along glass envelope and arranges, circumferencial direction (or being called diametric(al)) optically focused in glass envelope, at the axial direction of glass envelope optically focused not, realize the linear optically focused of one dimension, simple and reliable, obtain economy and practicality preferably.
further, it is 2.5 ~ 5 times that the optically focused multiplying power of described compound parabolic condenser system is designed to, enable to possess simultaneously and reduce the photovoltaic cell cost, keep certain optics tolerance angle to realize reducing design difficulty, efficiently to receive the advantage such as sunray, wherein the optically focused multiplying power is defined as the throat width of light-gathering optics than the multiple of photovoltaic cell component width.Although too high light concentrating times can reduce the battery cost, but after generally optically focused surpasses 5 times, the continuation of battery cost descends not obvious on the impact of system cost, and can propose some specific (special) requirements to photovoltaic cell than the optically focused of high power and cause price increase, the light-gathering optics tolerance angle of higher multiple is very little simultaneously.
preferably, the optically focused multiplying power of described compound parabolic condenser system is 2.5 ~ 3.5 times; Under this optically focused multiplying power, adopt monocrystalline or the polycrystal silicon cell of photovoltaic cell material and explained hereafter can meet instructions for use fully, thus but the battery cost in the decrease concentrating photovoltaic assembly.Follow the tracks of preferably tolerance because condenser system still has, have good spotlight effect, heat radiation simultaneously is good, and the cost of total system is lower.
preferably; optics parabolic reflector optimal design to described compound parabolic condenser system; adopt the combined reflected minute surface matching of the face that is folded flat that more than one plane reflection minute surface forms to substitute more; the light that makes to converge on photovoltaic cell is unlikely to undue concentration; distribute comparatively even; reach even light effect preferably, the protection photovoltaic cell is avoided damage, improves generating efficiency.
preferably, described that to be folded flat the combined reflected minute surface of face be the bonding formation of more than one flat glass eyeglass is more, and it is simple in structure, intensity is high, cost of manufacture is lower and have good reflectivity.
further, described plane reflection minute surface is mirror front-reflection rete, can reduce the sunlight transmission absorption; the protection basal body of reflector, and improve reflectivity, reduce the light leak caused due to the mirror body thickness; increase the reflection ray that photovoltaic cell component receives, improve the generating efficiency of photovoltaic cell component.
further, the photovoltaic cell component sensitive surface of described tubulose tracking light focusing photovoltaic assembly is arranged on the sunny side, and whole north and south direction of principal axis layout, implements east-west direction and follows the tracks of sunray.
further, described tubulose tracking light focusing photovoltaic assembly sensitive surface is arranged on the sunny side, and the rotation of glass envelope and the angled layout of horizontal plane, and for example Northern Hemisphere high latitude zone, become the north and south direction of principal axis to fix, and high layout the in low north, south.
further, the rotation of the glass envelope of described tubulose tracking light focusing photovoltaic assembly becomes the local latitude angle to arrange (pole axis layout) with horizontal plane, and for example Northern Hemisphere high latitude zone, become the north and south direction of principal axis to fix, and high layout the in low north, south.
further, from two tip position of described glass envelope or draw two electrodes of described tubulose tracking light focusing photovoltaic assembly near the tube wall of two tip position.
further, more than one described tubulose tracking light focusing photovoltaic assembly parallel array layout, form serial or parallel connection or series-parallel group of series winding connects mode.In this group series winding connects, the adjacent end portion extraction electrode of adjacent described tubulose tracking light focusing photovoltaic assembly directly connects, and the size of stube cable is very short, can save the stube cable cost of photovoltaic generating system.
further, described photovoltaic cell component overlap joint, cover mutually bus rod, improves and converge light utilization, improves generating efficiency.
further, described heat abstractor is that the good material of thermal conductivity is made, aluminium flake for example, this aluminium flake contacts with described photovoltaic cell component good heat conductive, be arranged in the photovoltaic cell component back as be close to, the extension of aluminium flake is arranged on the glass envelope internal face that light accepting part does not divide, and the photovoltaic cell heat effectively is diffused on the glass envelope wall.
The accompanying drawing explanation
the schematic diagram of the cross-sectional structure that Fig. 1 is tubulose tracking light focusing photovoltaic assembly;
fig. 2 is that tubulose tracking light focusing photovoltaic assembly radiating light receives schematic diagram;
the internal structure schematic diagram that Fig. 3 is tubulose tracking light focusing photovoltaic assembly;
fig. 4-1 and Fig. 4-2 are the impact contrast schematic diagram of condenser system on the even light of photovoltaic cell component;
the photovoltaic cell component overlap joint schematic diagram that Fig. 5 is tubulose tracking light focusing photovoltaic assembly;
the connected mode schematic diagram of the photovoltaic cell component series connection that Fig. 6 is tubulose tracking light focusing photovoltaic assembly;
fig. 7-1 is tubulose tracking light focusing photovoltaic assembly north and south shaft angle degree arrangement schematic diagram;
the main apparent direction structural representation that Fig. 7-2 are Fig. 7-1;
the local enlarged diagram that Fig. 7-3 are Fig. 7-2;
fig. 8 is that tubulose tracking light focusing photovoltaic assembly array is unified the rotational structure schematic diagram;
fig. 9-1 is tubulose tracking light focusing photovoltaic assembly array first case structural representation;
the structural representation that Fig. 9-2 are tubulose tracking light focusing photovoltaic assembly array second case.
Embodiment
the schematic diagram of the cross-sectional structure that Fig. 1 is tubulose tracking light focusing photovoltaic assembly.As shown in Figure 1, tubulose tracking light focusing photovoltaic assembly in the present invention comprises condenser system, the heat abstractor contacted with photovoltaic cell component 103 good heat conductive at one dimension condenser system 102, photovoltaic cell component 103 and photovoltaic cell component 103 backs for example, for example radiating aluminium sheet 104; Described tubulose tracking light focusing photovoltaic assembly has glass envelope 101; Traditional north and south axle of take arranges that uniaxiality tracking one-dimensional linear optically focused is example, defining the angle that traditional slot type parabolic concentrator photovoltaic module need to follow the tracks of around the north and south axial-rotation is β, the described β value of this patent can be specially angle between light vector that sunray is projected to the thing vertical plane and horizontal plane normal vector (as uniaxiality tracking is that the thing axle is arranged, the β value can be specially sunray be projected to the vectorial and horizontal plane normal vector of the light of north and south vertical plane between angle).
one dimension condenser system 102 is distributed in the both sides of photovoltaic cell component 103 symmetrically, radiating aluminium sheet 104 contacts with described photovoltaic cell component 103 good heat conductive, be arranged in the photovoltaic cell component back as be close to, the extension of radiating aluminium sheet 104 is arranged on glass envelope 101 internal face that light accepting part does not divide, and the photovoltaic cell heat effectively is diffused on glass envelope 101 inwalls to reach cooling effect.Particularly, the sealed at both ends closed structure that becomes of glass envelope 101, light transmittance is high, self-supporting strength is good, cost is low, long service life, impact and the destruction of isolated external environment that can be good on internal components (one dimension condenser system 102, photovoltaic cell component 103 and heat abstractor etc.).
further, the length of described tubulose tracking light focusing photovoltaic assembly is over 2.5 meters; Preferably, the length of described tubulose tracking light focusing photovoltaic assembly is over 5 meters, can take full advantage of intensity and the self-supporting ability of glass envelope, simplify installation procedure, save material and cost of labor, reduce the non-effective part shared ratio in entire length of utilizing in concentrating photovoltaic assembly two ends simultaneously as far as possible, reduce the end effect impact, further reduce costs.Because wall thickness and the diameter of glass envelope has certain relation, the general larger wall thickness of caliber is thicker, is to control wall thickness to save material, and described glass envelope diameter range is 30 millimeters～200 millimeters; Preferably, described glass envelope diameter range is 45 millimeters～150 millimeters, when obtaining larger light-receiving area as far as possible, reduce the glass envelope wall thickness, control wall thickness in 3 millimeters, preferably at 2 millimeters even in 1.5 millimeters, to reduce costs as far as possible.
fig. 2 is that tubulose tracking light focusing photovoltaic assembly radiating light receives schematic diagram.As shown in Figure 2, the internal placement of glass envelope 201 has condenser system 202, one dimension condenser system 202 can be compound parabolic condenser system (CPC system), described condenser system is defined as the compound parabolic condenser system (Compound Parabolic Collector, CPC) of low light gathering multiplying power.202 optical reflection faces of condenser system are arranged in photovoltaic cell component 203 both sides, whole incident light high-efficiency reflectives in the certain angle scope can be formed to spotlight effect to the photovoltaic cell surface, this angular range is called the tolerance angular range of condenser system and (works as sunlight and cause the sunlight on the direct incident photovoltaic cell component of part surface because of tracking accuracy or other reasons, through once or be greater than after reflection once from newly being incident to the photovoltaic cell component surface), photovoltaic cell component is directly in the face of the sunray incident direction, can just can receive quite a high proportion of direct projection light and scattered beam without the optical system reflection, improve the light utilization of this concentrating photovoltaic assembly, increase energy output.Diffusion light of the sun line angle degree becomes certain Gaussian Profile with the direct light incident angle, be not the isotropic distribution on strict incident angle, and the angle of the scattered light of most energy is all in the certain angle scope that approaches direct sunlight line angle degree.And condenser system of the present invention is implemented the sunray accurate tracking, direct light and most scattered beam all can effectively be received generating, so can inference in the more situation of scattered quantum, tubulose tracking light focusing photovoltaic assembly of the present invention also can effectively receive the scattered beam that density is higher, is generated electricity.In most area, the urban district of distributed arrangement tubulose tracing collection particularly, comprise more scattered light in the full irradiation of sunray, minute quantity on scattered light receives and will affect larger on unit power module annual energy output, reduce whole year generating efficiency, also increased the cost of electricity-generating of unit photovoltaic cell component.
the internal structure schematic diagram that Fig. 3 is tubulose tracking light focusing photovoltaic assembly.If shown in 3, tubulose tracking light focusing photovoltaic component internal structure comprises photovoltaic cell component 303 and compound parabolic condenser system 302; Described compound parabolic condenser system is one dimension compound parabolic condenser system, the optical reflection face of the photovoltaic cell component left and right sides axially is strip along glass envelope and arranges, circumferencial direction (or being called diametric(al)) optically focused in glass envelope, at the axial direction of glass envelope optically focused not, realize the linear optically focused of one dimension, obtain economy and practicality preferably.Preferably, described condenser system 302 can adopt a plurality of flat glass mirrors to be in turn many foldings level crossing that the angle bonding forms, it is simple in structure, and cost of manufacture is lower, has spotlight effect preferably, the flat glass mirror is mirror front-reflection rete, can reduce sun optical transmission, improve the reflectivity of speculum, reduce by the light leak of sheet thickness section part, increase the reflection ray that photovoltaic cell component receives, improve the generating efficiency of photovoltaic cell component.
fig. 4-1 and Fig. 4-2 are the impact contrast schematic diagram of condenser system on the even light of photovoltaic cell component.Collecting of the condenser system 411 that the sunlight that is incident to glass envelope inside as Fig. 4-1 is arranged through photovoltaic cell component 403 bilateral symmetry, reflexing to photovoltaic cell component 403 is generated electricity, it is 2.5 ~ 5 times that the optically focused multiplying power of described condenser system is designed to, and not only can reduce the photovoltaic cell cost, but also can keep certain optics tolerance angle and reduce heat abstractor design difficulty etc.The optically focused multiplying power is defined as the throat width of light-gathering optics and the ratio of photovoltaic cell component width; Although too high optically focused multiplying power can reduce the battery cost, after generally optically focused surpasses 5 times, the decline of battery cost is not obvious on the impact of system cost, and can propose some specific (special) requirements to photovoltaic cell than the optically focused of high power, causes price increase; The light-gathering optics tolerance angle of higher multiple is very little simultaneously, and the heat dissipation problem that higher multiple optically focused brings also can cause system cost to rise.Preferably, described optically focused multiplying power is 2.5 ~ 3.5 times; Under this optically focused multiplying power, adopt monocrystalline or the polycrystal silicon cell of common photovoltaic battery material and explained hereafter to meet instructions for use fully, now, the battery cost in concentrating photovoltaic assembly has had significantly decline, and heat radiation simultaneously is good, and cost is very low.In addition, the declared efficiency of photovoltaic cell is measured acquisition under the standard illumination condition.In actual application, normal illumination intensity is generally lower than the standard intensity of illumination, particularly be applicable to the city intensity of illumination overwhelming majority time of distributed installation all far below the standard intensity of illumination, lower than the declared efficiency under standard illumination condition according to the actual battery efficiency under intensity at low light, and the actual battery efficiency under suitable higher intensity of illumination condition is higher than declared efficiency than standard intensity of illumination.1.5 ~ 5 times of providing of tubulose tracking light focusing photovoltaic assembly of the present invention, the spotlight effect of 2.5 ~ 3.5 times particularly, just in time the general normal illumination intensity lower than the standard light photograph can be converged to the proper level that is promoted to the intensity of illumination that is above standard, at common intensity of illumination fine (reaching the standard intensity of illumination) Shi Buhui, owing to converging the too high battery that causes of multiplying power, damage, can make photovoltaic cell always work in the state that reaches and surpass the nominal conversion efficiency, improve the system generating efficiency.
preferably; optics parabolic reflector optimal design to described compound parabolic condenser system; adopt the combined reflected minute surface matching of the face that is folded flat that more than one plane reflection minute surface forms to substitute more; the light that makes to converge on photovoltaic cell is unlikely to undue concentration; distribute comparatively even; reach even light effect preferably, the protection photovoltaic cell is avoided damage, improves generating efficiency.From Fig. 4-1, can find out, the width that certain the angle incident ray formed through the plane reflection minute surface reflexes on the photovoltaic cell component face is d1, and its light that is incident to photovoltaic cell component is parallel incident ray.Fig. 4-2 demonstration compound parabolic caustic surface is accurately assembled situation, identical light is incident on 412 of the compound parabolic optically focused of same position, the width that receives 403 light in the photovoltaic cell component position is d2, clearly the d2 width is less than the d1 width, its reception be the light of a convergence, focal spot is very little, to the heat radiation of photovoltaic cell component, is also a huge test; And photovoltaic cell component, to sunlight assimilation effect heterogeneous bad, can cause local cell temperature too high, form speck, make battery failure even photovoltaic cell component be become to load, power output is unstable and significantly reduce.
the photovoltaic cell component overlap joint schematic diagram that Fig. 5 is tubulose tracking light focusing photovoltaic assembly.As shown in Figure 5, described photovoltaic cell component 503-1 and photovoltaic cell component 503-2 tilt to overlap, and cover mutually bus rod 509, improve and converge light utilization, improve generating efficiency.Further, the photovoltaic cell that forms described photovoltaic cell component is monocrystalline silicon battery or polycrystal silicon cell or cadmium telluride battery or CIGS thin-film solar cells.Preferably, monocrystalline silicon battery or polycrystal silicon cell or only size that above-mentioned two kind batteries cut or be combined to form and the conflux lead-in wire different photovoltaic cell of described photovoltaic cell for adopting standard universal material and technique manufacture, with the existing photovoltaic industry production capacity of abundant digestibility and utilization.
fig. 6 is the connected mode schematic diagram of the photovoltaic cell component series connection of tubulose tracking light focusing photovoltaic assembly of the present invention.When photovoltaic battery array is the connection in series-parallel combining structure, each series connection group is arranged along described glass envelope length direction.As shown in Figure 6, photovoltaic cell component comprises a plurality of photovoltaic cells unit, and each unit bottom leaves spacer insulator and arranges.Described photovoltaic cell unit comprises photovoltaic cell 603 and radiating aluminium sheet 604, and the top of photovoltaic cell 603 is negative pole, and bottom is anodal, and for example photovoltaic cell 603 is nonisulated with radiating aluminium sheet 604, and radiating aluminium sheet 604 is anodal.Described radiating aluminium sheet 604 is connected by syndeton 608 with the top of the photovoltaic cell 613 of next photovoltaic cell component unit, arrange in this manner each unit in the photovoltaic cell component array, make to connect between the photovoltaic cell component array element, electric energy is exported by the photovoltaic battery array two ends.
fig. 7-1 is tubulose tracking light focusing photovoltaic assembly north and south shaft angle degree arrangement schematic diagram.As shown in Fig. 7-1, tubulose tracking light focusing photovoltaic assembly 720 comprises the seal nipple 714 of glass envelope 713, glass envelope 713 two ends layouts and the photovoltaic cell component 711 that centre position is arranged.The photovoltaic cell component sensitive surface of described tubulose tracking light focusing photovoltaic assembly is arranged on the sunny side, and whole north and south direction of principal axis is arranged, implementing the azimuth direction sunray of thing follows the tracks of, and the angled layout of the rotation of glass envelope and horizontal plane, Northern Hemisphere high latitude zone for example, become the north and south direction of principal axis to fix, and high layout the in low north, south.Preferably, the rotation of the glass envelope of tubulose tracking light focusing photovoltaic assembly becomes the local latitude angle to arrange with horizontal plane, and now tubulose tracking light focusing photovoltaic assembly can have synchronism with hour angle; For example the hour angle ω on the same day (hour angle ω is the function of local time, longitude and the time difference, along with the time at the uniform velocity changes), follow the tracks of the angle beta value and equal hour angle ω from numerical value, per hour needs to rotate 15 °, from the rotation of east orientation west.
the main apparent direction structural representation that Fig. 7-2 are Fig. 7-1.As shown in Fig. 7-2; what in figure, show is the state of tubulose tracking light focusing photovoltaic assembly in some moments of rotation; the optics parabolic reflector optimal design of compound parabolic condenser system; adopt the combined reflected minute surface matching of the face that is folded flat that more than one plane reflection minute surface forms to substitute more; the light that makes to converge on photovoltaic cell is unlikely to undue concentration, distributes comparatively even, reaches even light effect preferably; the protection photovoltaic cell is avoided damage, improves generating efficiency.Preferably, described that to be folded flat the combined reflected minute surface of face be the bonding formation of more than one flat glass eyeglass is more, and it is simple in structure, intensity is high, cost of manufacture is lower and have good reflectivity.The width of going back the display light photovoltaic cell components in figure is A, and the width of concentration photovoltaic system is 3.5A, and now the optically focused multiplying power of this tubulose tracking light focusing photovoltaic assembly is 3.5.Under this optically focused multiplying power, adopt monocrystalline or the polycrystal silicon cell of common photovoltaic battery material and explained hereafter can meet instructions for use fully, now, battery cost in concentrating photovoltaic assembly has had significantly decline, heat radiation is good simultaneously, cost is very low, just in time the general normal illumination intensity lower than the standard light photograph can be converged to the proper level that is promoted to the intensity of illumination that is above standard, at common intensity of illumination fine (reaching the standard intensity of illumination) Shi Buhui, owing to converging the too high battery that causes of multiplying power, damage, can make photovoltaic cell always work in the state that reaches and surpass the nominal conversion efficiency, raising system generating efficiency.
the local enlarged diagram that Fig. 7-3 are Fig. 7-2.As shown in Fig. 7-3, described plane reflection minute surface is mirror front-reflection rete, reduces the sunlight transmission absorption; the protection basal body of reflector, and improve reflectivity, reduce the light leak caused due to the mirror body thickness; increase the reflection ray that photovoltaic cell receives, improve the generating efficiency of photovoltaic cell component.In figure, incident ray is through the junction of a plurality of flat glass mirrors of described condenser system, because the mirror front-reflection rete of plane reflection minute surface becomes c light by light reflection, c light finally can arrive the photovoltaic cell component surface, and utilize the mirror back reflection rete of plane reflection minute surface to become light d through the connection gap of flat glass mirror, and can't arrive the photovoltaic cell component surface.Identical light incident can become light reflection f incident light photovoltaic cell components surface near the mirror front-reflection of the flat glass mirror process flat glass mirror of photovoltaic cell component, light reflection is become to light e through flat glass mirror mirror back reflection, be incident to the back of photovoltaic cell component, cause photovoltaic cell component not receive this part sunray.
fig. 8 is that tubulose tracking light focusing photovoltaic assembly array of the present invention is unified the rotational structure schematic diagram.As shown in Figure 8, this embodiment comprises that in parallel tracking of several tubulose tracking light focusing photovoltaic assemblies drives, and for example the group number of tubulose tracking light focusing photovoltaic assembly is 6 groups, tubulose tracking light focusing photovoltaic assembly 821 ~ tubulose tracking light focusing photovoltaic assembly 823.The tubulose tracking light focusing photovoltaic assembly integral level thing of the plurality of array is arranged or horizontal north and south axle is arranged or axle angle of inclination, north and south is arranged, being preferably axle angle of inclination, north and south is the local latitude angle, and arranges on the sunny side.Show and be arranged as example on the sunny side with north and south axle inclination local latitude angle in figure, described tubulose tracking light focusing photovoltaic assembly 821 ~ tubulose concentrating photovoltaic assembly 823 is arranged in parallel on same runing rest, around same rotary middle spindle 807 rotations, the enforcement sunray is followed the trail of, and the sunlight of incident is converted into to electric energy output.This tubulose tracking light focusing photovoltaic assembly is arranged under the driving of drive unit, and each tubulose tracking light focusing photovoltaic assembly is around the centre rotational axis rotation of self.This unified tracking implementing mode, can simplify follower, reduces and follow the tracks of cost.
fig. 9-1 is tubulose tracking light focusing photovoltaic assembly array first case structural representation.As shown in Fig. 9-1, two electrodes of described tubulose tracking light focusing photovoltaic assembly are respectively from the two ends position of described glass envelope 901 or near extracting power supply cord 908 and power line 909 tube wall of two tip position.Further, more than one described tubulose tracking light focusing photovoltaic assembly parallel array is arranged, formation serial or parallel connection or series-parallel group of series winding connect mode, the adjacent end portion of described tubulose tracking light focusing photovoltaic assembly is directly connected by described electrode, size is very short, can save the stube cable cost of photovoltaic generating system.Specific embodiment is, the length of the glass envelope 901 of each low-concentration photovoltaic electrification component is 5m, and external diameter is 70mm, glass envelope thickness 2mm; Every two low-concentration photovoltaic electrification components form a U-shaped structure, and every two U-shaped structures only need connecting from tape cable of 0.2m, and every 10 U-shaped structures form a complete low-concentration photovoltaic electrification component array; A plurality of similar focusing photovoltaic generation modules conflux on bus side by side, implement the electric weight of cable in a small amount and carry.
the structural representation that Fig. 9-2 are tubulose tracking light focusing photovoltaic assembly array second case.As shown in Fig. 9-2, every plural focusing photovoltaic generation module arranged in series, the focusing photovoltaic generation module composition array element parallel with one another of two groups of above identical arranged in series, a plurality of identical array elements electric energy that photovoltaic cell is produced parallel with one another is delivered to the system outside jointly.
obviously, under the prerequisite that does not depart from true spirit of the present invention and scope, the present invention described here can have many variations.Therefore, all changes that it will be apparent to those skilled in the art that, within all should being included in the scope that these claims contain.The present invention's scope required for protection is only limited by described claims.
Claims (19)
1. a tubulose tracking light focusing photovoltaic assembly comprises condenser system, photovoltaic cell component and the heat abstractor contacted with the photovoltaic cell component good heat conductive, it is characterized in that, described tubulose tracking light focusing photovoltaic assembly has the glass envelope of closed at both ends, and described condensation photovoltaic battery component is implemented sensitive surface towards sunshine tracking, implement the high-effective concentration generating.
2. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1, is characterized in that, described glass envelope length is over 2.5 meters.
3. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1 and 2, is characterized in that, described glass envelope length is over 5 meters.
4. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1 and 2, is characterized in that, described glass envelope diameter range is 45 millimeters～150 millimeters.
5. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1, is characterized in that, described photovoltaic cell is monocrystalline silicon battery or polycrystal silicon cell or cadmium telluride battery or CIGS thin-film solar cells.
6. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 5, it is characterized in that monocrystalline silicon battery or polycrystal silicon cell or only size that above-mentioned two kind batteries cut or be combined to form and the go between different photovoltaic cell of described photovoltaic cell for adopting standard universal material and technique manufacture.
7. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 6, is characterized in that, described compound parabolic condenser system is one dimension compound parabolic condenser system, can realize the linear optically focused of one dimension.
8. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 7, is characterized in that 2.5 ~ 5 times of the optically focused multiplying powers of described compound parabolic condenser system.
9. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 7, is characterized in that, the mirror surface of the face that the is folded flat combination that the optics parabolic reflector of described compound parabolic condenser system adopts more than one plane reflection face to form more.
10. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 9, is characterized in that, described that to be folded flat the face combined reflecting surface be that more than one flat glass eyeglass is spliced to form is more.
11. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 10 is characterized in that described level crossing is mirror front-reflection rete.
12. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1, it is characterized in that, described tubulose tracking light focusing photovoltaic assembly sensitive surface is arranged on the sunny side, whole north and south direction of principal axis layout, and the rotation of glass envelope and the angled layout of horizontal plane.
13. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1, it is characterized in that, described tubulose tracking light focusing photovoltaic assembly sensitive surface is arranged on the sunny side, whole north and south direction of principal axis layout, and the rotation of glass envelope becomes the local latitude angle to arrange with horizontal plane.
14. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1, is characterized in that, on two tip position of described glass envelope or the close tube wall of two tip position, comprises two extraction electrodes.
15. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1, is characterized in that, more than one described tubulose tracking light focusing photovoltaic assembly parallel array is arranged, tracking driving in parallel.
16. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1, it is characterized in that, more than one described tubulose tracking light focusing photovoltaic assembly parallel array is arranged, form serial or parallel connection or series-parallel group of series winding and connect mode, the adjacent end portion of described tubulose tracking light focusing photovoltaic assembly is directly connected by described electrode.
17. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1 is characterized in that described photovoltaic cell component covers mutually bus rod.
18. a kind of tubulose tracking light focusing photovoltaic assembly according to shown in claim 1 is characterized in that described photovoltaic cell component comprises a plurality of photovoltaic cells unit, each photovoltaic cells bottom is left spacer insulator and is arranged.
19. a kind of tubulose tracking light focusing photovoltaic assembly according to claim 1, is characterized in that, described heat abstractor is close to and is arranged in ，Qi extension, photovoltaic cell component back and is arranged on the internal face that glass envelope can not light accepting part divides.
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| CN2013103445981A CN103456824A (en) | 2013-08-08 | 2013-08-08 | Tubular tracking concentrating photovoltaic module |
| PCT/CN2013/085658 WO2015018132A1 (en) | 2013-08-08 | 2013-10-22 | Tubular tracking concentration photovoltaic module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018077223A1 (en) * | 2016-10-28 | 2018-05-03 | 刘阳 | Tubular concentrating photovoltaic cell assembly and array |
| CN113630084A (en) * | 2021-10-12 | 2021-11-09 | 南通睿博电器有限公司 | Photovoltaic module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112885916A (en) * | 2021-03-30 | 2021-06-01 | 华北电力大学 | High-power concentrating photovoltaic device based on crystalline silicon battery and annular Fresnel condenser |
| CN114242844B (en) * | 2022-01-04 | 2023-12-22 | 江苏日托光伏科技股份有限公司 | Method for simultaneously producing multiple photovoltaic modules in multiple formats |
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