CN102306674A - High-efficient solar photovoltaic battery condensation device - Google Patents
High-efficient solar photovoltaic battery condensation device Download PDFInfo
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- CN102306674A CN102306674A CN201110281600A CN201110281600A CN102306674A CN 102306674 A CN102306674 A CN 102306674A CN 201110281600 A CN201110281600 A CN 201110281600A CN 201110281600 A CN201110281600 A CN 201110281600A CN 102306674 A CN102306674 A CN 102306674A
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Abstract
The invention relates to a high-efficient solar photovoltaic battery condensation device. The device is characterized by comprising more than one condensation unit; each condensation unit comprises a main reflection mirror, an auxiliary reflection mirror, a solar photovoltaic battery device, an auxiliary reflection mirror supporting and positioning device and a solar photovoltaic battery support, wherein the auxiliary reflection mirror supporting and positioning device is used for supporting the auxiliary reflection mirror; the solar photovoltaic battery support is used for supporting the solar photovoltaic battery support; the auxiliary reflection mirror is a convex mirror, and the main reflection mirror is a concave mirror with the caliber which is greater than that of the auxiliary reflection mirror; the auxiliary reflection mirror and the main reflection mirror are arranged in tandem along the optical axis direction and form a Cassegrain telescopic condensation combination system; and the light receiving surface of the solar photovoltaic battery device is positioned on the optical axis on the rear side of the auxiliary reflection mirror and is dead against the auxiliary reflection mirror. According to the invention, not only can the sunlight condensation multiplying factor of the solar photovoltaic battery be enhanced obviously, but also the structure is simple.
Description
Technical field
The present invention relates to the photocell lens device; Particularly a kind of high-efficiency solar photovoltaic battery beam condensing unit; It is applicable to the various solar-energy photo-voltaic cell devices that have accurate sun tracker and needs enhancing optically focused usefulness, is specially adapted to adopt the little solar-energy photo-voltaic cell devices of light-receiving area such as GaAs.
Background technology
Collect the usefulness of sunlight in order to strengthen solar-energy photo-voltaic cell, the method that adopts both at home and abroad at present roughly is to carry out optically focused through the Fresnel lens of plastics die casting or with polygon mirror.These ways have obtained certain effect.But the process technology difficulty of making Fresnel lens is bigger; Need the cost of investment higher, particularly light-receiving area is big more, and its difficulty of processing is big (mainly being the making and the plastic processing process of die casting) more; It is to be processed by the soft plastic material of matter simultaneously; Difficult protection under relatively poor environmental condition, the general life-span is shorter, is unfavorable for the large tracts of land popularization.Polygon mirror optically focused is made and is easier to, but the optically focused efficiency ratio that it can strengthen is more limited.
Summary of the invention
In order to solve existing in prior technology the problems referred to above, the invention provides a kind of high-efficiency solar photovoltaic battery beam condensing unit, it not only can significantly strengthen the sunlight optically focused multiplying power of solar-energy photo-voltaic cell, and simple in structure.
Technical scheme of the present invention is to constitute like this; A kind of high-efficiency solar photovoltaic battery beam condensing unit; It is characterized in that: it comprises more than one light focusing unit, and each light focusing unit includes principal reflection mirror, secondary speculum, solar-energy photo-voltaic cell device, be used for supporting the secondary speculum supporting and positioning device of secondary speculum and be used for the solar-energy photo-voltaic cell frame of support solar photovoltaic cell device; Said secondary speculum is a convex mirror, and principal reflection mirror is the concave mirror of bore greater than secondary speculum, and secondary speculum and principal reflection mirror one in front and one in back are provided with along optical axis direction forms the cassegrain type optically focused combined system of looking in the distance; The sensitive surface of solar-energy photo-voltaic cell device is positioned on the optical axis of secondary speculum rear side and over against secondary speculum.
In order further to simplify assembly technology, in the technique scheme of the present invention, said secondary speculum supporting and positioning device is made up of the clear optical glass plate that is pasted on secondary speculum front side.Utilize the clear optical glass plate that secondary speculum is fixed, not only can avoid shutting out the light, and assembly technology is simple to operation, can also play the dustproof effect in addition.Certainly, in the specific implementation, said secondary speculum supporting and positioning device also can variously be convenient to support being configured to of locating pair speculum by other.
In order further to improve the Salar light-gathering effect of high-efficiency solar photovoltaic battery beam condensing unit of the present invention; The further improvement of technique scheme of the present invention is: the quantity of said light focusing unit is a plurality of; The optical axis of each light focusing unit is parallel to each other, and the secondary speculum of a plurality of light focusing unit is pasted on the diverse location of same clear optical glass plate rear side.Because same block of clear optical glass plate of employing fixed the secondary speculum of each light focusing unit, therefore can avoid processing with mechanical parts, thereby both reduce production costs than the fixing of complicacy, simplify assembly technology again.
The basic principle of technique scheme of the present invention is explained as follows: referring to shown in Figure 3, by the light beam (can be considered the directional light that send the infinity) that the sun sends, inciding bore is Φ
MainPrincipal reflection mirror (large reflective mirror).After primary mirror reflects, converge to the focal plane of principal reflection mirror again before, be Φ by bore
SecondarySecondary speculum (small reflector) reflex to cassegrain type and look in the distance on the back focal plane of optically focused combined system.Because focal heat is very high, and the solar-energy photo-voltaic cell device of producing at present, anyly all can't bear, so the correct position of solar-energy photo-voltaic cell device, should (be made as Φ according to its size
C) and heat resistance be placed on before or after the focal plane.The sunlight optically focused multiplying power that strengthens at the sensitive surface of solar-energy photo-voltaic cell device can be similar to and be decided to be:
To dissimilar solar-energy photo-voltaic cell devices, the invention provides following two kinds of optimal technical scheme:
(1) preferred version one:
The minute surface of said principal reflection mirror is preferably parabola or the quadratic surface or the sphere of symmetric form, and the minute surface of said secondary speculum is preferably parabola or the quadratic surface or the sphere of symmetric form; The look in the distance focal plane of optically focused combined system of said cassegrain type is positioned at the rear side of principal reflection mirror; The center of principal reflection mirror offers loophole; The sensitive surface of solar-energy photo-voltaic cell device be positioned at the rear side of loophole and be positioned at cassegrain type look in the distance the optically focused combined system position, focal plane or position near, the solar-energy photo-voltaic cell monomer that the solar-energy photo-voltaic cell device is little by light-receiving area, conversion efficiency is high and heat resistance is good constitutes.
The minute surface of said principal reflection mirror and secondary speculum preferably is respectively the parabola of symmetric form; Said solar-energy photo-voltaic cell monomer is a GaAs solar-energy photo-voltaic cell device; Said solar-energy photo-voltaic cell frame is provided with heat abstractor.Under the situation of extremely strong sunlight direct projection, still higher in the temperature of the sensitive surface of solar-energy photo-voltaic cell device, can make the photoelectric conversion efficiency step-down of solar-energy photo-voltaic cell device, therefore still need behind the solar-energy photo-voltaic cell frame, set up heat abstractor.
In order more effectively to focus on the light beam of polarizing axis slightly on the sensitive surface of solar-energy photo-voltaic cell device; Funnel type internal reflection light conductor is installed in the loophole of said principal reflection mirror, and funnel type internal reflection light conductor along optical axis direction from front to back bore reduce gradually.The beam homogenization of the sensitive surface that gets into the solar-energy photo-voltaic cell device can be made so on the one hand, the requirement of sun tracker can also be reduced on the other hand the solar tracking precision.
The perpendicular cross section of said funnel type internal reflection light conductor and optical axis can be rounded or square.
In order further to reduce the heat of solar radiation to the solar-energy photo-voltaic cell device, be provided with the heat insulation colour filter that is coated with infrared cut coating in the said funnel type internal reflection light conductor.Said heat insulation colour filter can see through visible with near infrared light but by far red light.
According to computing formula (1), through preferred version one described high-efficiency solar photovoltaic battery beam condensing unit of the present invention, the optically focused multiplying power that on the sensitive surface of solar-energy photo-voltaic cell device, strengthens is about:
Wherein, D
PLight-receiving area for the solar-energy photo-voltaic cell device.
(2) preferred version two:
The minute surface of said principal reflection mirror is preferably parabola or the quadratic surface or the sphere of cylindrical, and the minute surface of said secondary speculum is preferably parabola or the quadratic surface or the sphere of cylindrical, and the cylinder central shaft of principal reflection mirror and secondary speculum is parallel to each other; Said cassegrain type is looked in the distance the focal plane of optically focused combined system between principal reflection mirror and secondary speculum; The sensitive surface of solar-energy photo-voltaic cell device is between cassegrain type is looked in the distance the focal plane and principal reflection mirror of optically focused combined system; Said solar-energy photo-voltaic cell device is by two above light-receiving areas are big, photoelectric conversion efficiency is low and the solar-energy photo-voltaic cell monomer of heat resistance difference forms along the cylinder central axis direction arrangement that is parallel to secondary speculum.
The minute surface of said principal reflection mirror is preferably the parabola of cylindrical, and the minute surface of said secondary speculum is preferably the sphere of cylindrical; Said solar-energy photo-voltaic cell monomer is monocrystalline silicon battery or amorphous silicon battery; Said solar-energy photo-voltaic cell frame is provided with heat abstractor.
According to experiment; Before being placed on the minute surface of principal reflection mirror to larger area solar-energy photo-voltaic cell device; The light beam that the sensitive surface of solar-energy photo-voltaic cell device is received come in from two speculums; And also can shine above it the angled-off direct beam, the sensitive surface that helps the solar-energy photo-voltaic cell device receives more illumination.See from optics processing; The technical process of on the parabolic body of bigger cylindrical, slotting is difficulty relatively; Therefore in the above-mentioned preferred version two of the present invention; Being linked to be the solar-energy photo-voltaic cell group of strip, and its is placed along the cylinder central axis direction that is parallel to secondary speculum by standard-sized solar-energy photo-voltaic cell monomer more than two.In order to reduce secondary speculum " being in the light ", the look in the distance focal plane of optically focused combined system of cassegrain type is placed between principal reflection mirror and the secondary speculum; The sensitive surface of solar-energy photo-voltaic cell device is between cassegrain type is looked in the distance the focal plane and principal reflection mirror of optically focused combined system.
Above-mentioned preferred version two described high-efficiency solar photovoltaic battery beam condensing units, the optically focused multiplying power that on the sensitive surface of solar-energy photo-voltaic cell device, strengthens is about:
Above-mentioned preferred version one both can only carry out optically focused efficiently separately by a light focusing unit with preferred version two described high-efficiency solar photovoltaic battery beam condensing units; Also can splice and combine into large-scale beam condensing unit by a plurality of identical light focusing unit, the optical axis of each independent light focusing unit must be parallel to each other.
Compared to prior art, the present invention has the following advantages:
(1) adopt the cassegrain type of two reflectings surface optically focused combined system of looking in the distance not only simple in structure; Easy to process; And its sunlight optically focused multiplying power that on the solar-energy photo-voltaic cell device, strengthens is very high; Reaching under the situation of same generating efficiency, can significantly reduce the area of solar-energy photo-voltaic cell device.
(2) utilize the clear optical glass plate that secondary speculum is fixed, not only can avoid shutting out the light, and assembly technology is simple to operation, can also play the dustproof effect in addition.
(3) because two faces of light beam process all are reflectings surface, very low to material requirements, adopt cheap optical material die cast to meet the demands.Particularly when principal reflection mirror adopts ripe parabolic of process technology, not only be easy to processing, cost of investment is low, and the spherical aberration of optical system is significantly reduced, and the light beam disc of confusion is diminished.
(4) owing in preferred version one, set up funnel type internal reflection light conductor, not only can make the illumination homogenize that gets on the less solar-energy photo-voltaic cell device of area, and can reduce the requirement of sun tracker the solar tracking precision.In addition,, therefore can reduce the illumination temperature that gets on the battery face, guarantee that solar-energy photo-voltaic cell can high-efficiency continuous work owing in light path, add the heat insulation colour filter that is coated with infrared cut coating that can pass through the anti-far red light of visible light.
(5) high-efficiency solar photovoltaic battery beam condensing unit of the present invention not only can carry out the opto-electronic conversion generating separately by single light focusing unit; Can also be combined into large-scale photoelectric conversion device by a plurality of light focusing unit easily and carry out the opto-electronic conversion generating; Because same block of clear optical glass plate of employing fixed the secondary speculum of each light focusing unit, therefore not only can avoid processing with mechanical parts than the fixing of complicacy, and also easy to adjust; Thereby both reduced production costs, simplified assembly technology again.
(6) high-efficiency solar photovoltaic battery beam condensing unit of the present invention can be tackled relatively poor environmental condition, helps promoting.
Description of drawings
Fig. 1 is the sketch map of Fresnel lens condenser system commonly used.
Fig. 2 is for adopting the sketch map of many plane mirrors condenser system.
Fig. 3 is the sketch map of Cassegrain telescopic system image-forming principle.
Fig. 4 is an embodiment 1-1 structural representation provided by the invention.
Fig. 5 is an embodiment 2-1 structural representation provided by the invention.
Fig. 6 is the end view of Fig. 5.
Fig. 7 is an embodiment 1-2 structural representation provided by the invention.
Fig. 8 is the end view of Fig. 7.
Fig. 9 is an embodiment 2-2 structural representation provided by the invention.
Figure 10 is the end view of Fig. 9.
Figure 11 is the point range figure of the high-efficiency solar photovoltaic battery beam condensing unit of embodiment of the invention 1-1 at solar-energy photo-voltaic cell device physical location sensitive surface.The parameter dimensional units of point range figure is 4000 μ m.
Figure 12 is the point range figure of the high-efficiency solar photovoltaic battery beam condensing unit of embodiment of the invention 2-1 at solar-energy photo-voltaic cell device physical location sensitive surface.The parameter dimensional units of point range figure is 20000 μ m.
Label declaration among the figure: 1, principal reflection mirror, 2, secondary speculum, 3, the solar-energy photo-voltaic cell device, 4, secondary speculum supporting and positioning device, 5, the solar-energy photo-voltaic cell frame, 6, funnel type internal reflection light conductor, 7, heat insulation colour filter.
Embodiment
Below in conjunction with Figure of description, embodiment and embodiment content of the present invention is elaborated:
The specific embodiment of the invention provides a kind of high-efficiency solar photovoltaic battery beam condensing unit; It is characterized in that: it comprises more than one light focusing unit, and each light focusing unit includes principal reflection mirror 1, secondary speculum 2, solar-energy photo-voltaic cell device 3, be used for supporting the secondary speculum supporting and positioning device 4 of secondary speculum 2 and be used for the solar-energy photo-voltaic cell frame 5 of support solar photovoltaic cell device 3; Said secondary speculum 2 is a convex mirror, and principal reflection mirror 1 is a concave mirror, and secondary speculum 2 and principal reflection mirror 1 one in front and one in back are provided with along optical axis direction and form the cassegrain type optically focused combined system of looking in the distance; The sensitive surface of solar-energy photo-voltaic cell device 3 is positioned on the optical axis of secondary speculum 2 rear sides and over against secondary speculum 2.
Said secondary speculum supporting and positioning device 4 is made up of the clear optical glass plate that is pasted on secondary speculum 2 front sides.
Embodiment 1-1
The minute surface of said principal reflection mirror 1 is parabola or the quadratic surface or the sphere of symmetric form, and the minute surface of said secondary speculum 2 is parabola or the quadratic surface or the sphere of symmetric form; The look in the distance focal plane of optically focused combined system of said cassegrain type is positioned at the rear side of principal reflection mirror 1; The center of principal reflection mirror 1 offers loophole; The sensitive surface of solar-energy photo-voltaic cell device 3 be positioned at the rear side of loophole and be positioned at cassegrain type look in the distance the optically focused combined system position, focal plane or position near, the solar-energy photo-voltaic cell monomer that solar-energy photo-voltaic cell device 3 is little by light-receiving area, conversion efficiency is high and heat resistance is good constitutes.
The minute surface of said principal reflection mirror 1 and secondary speculum 2 is respectively the parabola of symmetric form; Said solar-energy photo-voltaic cell monomer is a GaAs solar-energy photo-voltaic cell device 3; Said solar-energy photo-voltaic cell frame 5 is provided with heat abstractor.
Table 1 is the optical texture data that embodiment of the invention 1-1 adopts.Wherein the look in the distance combined focal length of optically focused combined system of cassegrain type is f
Close(adopt the focal length of the paraboloidal principal reflection mirror 1 of symmetric form is f to '=794mm
Main'=267.2mm, adopting the focal length of the paraboloidal secondary speculum 2 of symmetric form is f
Secondary'=-99.5mm).The maximum caliber of principal reflection mirror 1 is Φ
MainThe look in the distance relative aperture D/f=1 of optically focused combined system of=320mm, this cassegrain type: 2.5, its picture square hole on the solar-energy photo-voltaic cell focal plane directly is u '=0.196.The full-size of the solar-energy photo-voltaic cell device that present embodiment uses (like GaAs solar-energy photo-voltaic cell device) is that (diagonal is 2y '=14mm) to 10 * 10mm, about about 1.1 degree of the angle of visual field 2 ω of system.
Can more convenient installation solar-energy photo-voltaic cell frame 5 and heat abstractor in order to make cassegrain type look in the distance the optically focused combined system, the sensitive surface of the solar-energy photo-voltaic cell device 3 of present embodiment design is placed on the back of principal reflection mirror 1.Because image planes are far away more from the distance of secondary speculum 2, the bore of secondary speculum 2 is just big more, and it is very important therefore reasonably choosing the focal point position.According to calculating rear cut-off distance l
1' be defined in
Be proper.The position of sensitive surface is chosen and can be taken at the minimum position of light beam disc of confusion on the optical axis.Present embodiment is got l
1'=216mm.The bore that blocks secondary speculum 2 desirable behind the light is Φ
Secondary=81.6mm.The disc of confusion point range figure of the different visual fields (0,0.5 ω, 0.7 ω, 0.85 ω, 1 ω) that the embodiment of being 1-1 shown in figure 11 calculates with 11 integrating photometers on cassegrain type is looked in the distance the sensitive surface of optically focused combined system.As can be seen from the figure, light beam distributes still relatively uniformly in each visual field.
According to computing formula (1), can calculate the optically focused multiplying power that the beam condensing unit of embodiment 1-1 strengthens be on the sensitive surface of solar-energy photo-voltaic cell device 3:
Funnel type internal reflection light conductor 6 is installed in the loophole of said principal reflection mirror 1, and funnel type internal reflection light conductor 6 along optical axis direction from front to back bore reduce gradually.The perpendicular cross section of said funnel type internal reflection light conductor 6 and optical axis is rounded or square.Said funnel type internal reflection light conductor 6 can be processed into electroplating with metalwork, also can form or form with the thin working of plastics that is coated with reflectance coating is folding with die casting of two half-conical glass and plating reflectance coating.The purpose of setting up: the one, reduced the tracking accuracy of sun tracker; The 2nd, collect the direct sunlight bundle that departs from condenser system certain angle (approximately ± 20 ') on the solar-energy photo-voltaic cell face, make the homogenize more of throwing light on.Be provided with the heat insulation colour filter 7 (thickness is 0.7mm) that is coated with infrared cut coating in the said funnel type internal reflection light conductor 6, the anti-infrared light of this colour filter passes through visible light, can reduce the heat of the sensitive surface that gets into the solar-energy photo-voltaic cell device.
Table 1
f
Close'=798.4mm D/f=1: 2.49 2 ω=1 ° NA=0.1965 unit: mm
Embodiment 1-2
High-efficiency solar photovoltaic battery beam condensing unit that present embodiment provided and the difference of embodiment 1-1 are: the quantity of said light focusing unit is a plurality of; The optical axis of each light focusing unit is parallel to each other, and the secondary speculum 2 of a plurality of light focusing unit is pasted on the diverse location of same clear optical glass plate rear side.
As Fig. 7 with shown in Figure 8 for 9 identical light focusing unit adopting the foregoing description 1-1 design at 1m
2Complete machine combination optical sketch map.The optical axis of each condenser system need be adjusted to and be parallel to each other.Owing to adopt unified cover glass, avoided complicated fixing with mechanical parts processing, can reduce production costs.
Embodiment 2-1
The minute surface of said principal reflection mirror 1 is preferably parabola or the quadratic surface or the sphere of cylindrical, and the minute surface of said secondary speculum 2 is preferably parabola or the quadratic surface or the sphere of cylindrical, and the cylinder central shaft of principal reflection mirror 1 and secondary speculum 2 is parallel to each other; Said cassegrain type is looked in the distance the focal plane of optically focused combined system between principal reflection mirror 1 and secondary speculum 2; The sensitive surface of solar-energy photo-voltaic cell device 3 is between cassegrain type is looked in the distance the focal plane and principal reflection mirror 1 of optically focused combined system; Said solar-energy photo-voltaic cell device 3 by two above light-receiving areas big (generally greater than 30 * 30mm), photoelectric conversion efficiency is low and the solar-energy photo-voltaic cell monomer of heat resistance difference is arranged along the cylinder central axis direction that is parallel to secondary speculum 2 and formed.
The minute surface of said principal reflection mirror 1 preferably is illustrated in figure 5 as the parabola of cylindrical, and the minute surface of said secondary speculum 2 preferably is illustrated in figure 5 as the sphere of cylindrical; Said solar-energy photo-voltaic cell monomer is monocrystalline silicon battery or amorphous silicon battery; Said solar-energy photo-voltaic cell frame 5 is provided with heat abstractor.
Table 2 is optical texture data of embodiment 2-1.Wherein: the look in the distance combined focal length of optically focused combined system of cassegrain type is f
Close(adopt the focal length of the paraboloidal principal reflection mirror 1 of cylindrical is f to '=509mm
Main'=238.5mm, the focal length of the secondary scintilloscope 2 of the sphere of employing cylindrical is f
Secondary'=-110mm).The max line of principal reflection mirror 1 directly is Φ
Main=250mm.The look in the distance relative aperture D/f ' of optically focused combined system=1: 2.04 of this cassegrain type, its picture side's angular aperture on the sensitive surface of solar-energy photo-voltaic cell device 3 is u '=0.238.The standard size of the solar-energy photo-voltaic cell monomer that this embodiment uses is 50 * 50mm, can be connected into 50 * 400mm or longer battery pack along sagitta of arc direction.The look in the distance angle of visual field 2 ω of optically focused combined system=about 3 ° of Cassegrain type.
When adopting the battery pack of strip, the volume of required principal reflection mirror 1 is bigger, on it, open a slotted hole mouth, places behind the principal reflection mirror 1 relatively difficulty to solar-energy photo-voltaic cell device 3.Therefore the sensitive surface of the solar-energy photo-voltaic cell device 3 chosen of present embodiment places the front of principal reflection mirror 1.Such arrangement, favourable to the bore that reduces secondary speculum 2.The minimizing of secondary speculum 2 logical light height; Except that strengthening receiving the optical efficiency of solar-energy photo-voltaic cell device 3 through the cassegrain type optically focused combined system of looking in the distance; Can also let the both sides direct projection of sunlight through secondary speculum 2 to the sensitive surface of solar-energy photo-voltaic cell device 3, can further improve and receive light transmittance efficiency.The logical light height of the reality of secondary speculum 2 is 64mm.
(temperature exceeds threshold value because the solar-energy photo-voltaic cell device heat resistance that present embodiment adopts is relatively poor; The electricity conversion of battery is reduced rapidly), so the cassegrain type position that the focal plane of optically focused combined system should depart from the sensitive surface of solar-energy photo-voltaic cell device 3 of looking in the distance.Through calculating, we are selected in the sensitive surface position:
it can guarantee to shine sensitive surface (50mm is high) light beam evenly and the installation of being convenient to solar-energy photo-voltaic cell frame 5 and heat abstractor.
According to computing formula (1), can calculate the optically focused multiplying power that the beam condensing unit of embodiment 2-1 strengthens be on the sensitive surface of solar-energy photo-voltaic cell device 3:
The different visual fields that the embodiment of being 2-1 shown in figure 12 calculates with 20 integrating photometers on cassegrain type is looked in the distance the sensitive surface of optically focused combined system (0 ,+/-0.7 ω ,+/-1 ω) at the disc of confusion point range figure of actual sensitive surface; As can be seen from the figure, light beam is still relatively more uniform in the distribution of each visual field.
Table 2
f
Close'=509.4mm D/f=1: 2.04 2 ω=3 ° (image planes height 50mm) NA=0.238 unit: mm
Embodiment 2-2
High-efficiency solar photovoltaic battery beam condensing unit that present embodiment provided and the difference of embodiment 2-1 are: the quantity of said light focusing unit is a plurality of; The optical axis of each light focusing unit is parallel to each other, and the secondary speculum 2 of a plurality of light focusing unit is pasted on the diverse location of same clear optical glass plate rear side.
As Fig. 9 with shown in Figure 10 be to adopt 6 identical light focusing unit of the foregoing description 2-1 design at 1m
2The entire combination optical schematic diagram.The axis of each single light focusing unit need be adjusted to and be parallel to each other.
Claims (10)
1. high-efficiency solar photovoltaic battery beam condensing unit; It is characterized in that: it comprises more than one light focusing unit, and each light focusing unit includes principal reflection mirror (1), secondary speculum (2), solar-energy photo-voltaic cell device (3), be used for supporting the secondary speculum supporting and positioning device (4) of secondary speculum (2) and be used for the solar-energy photo-voltaic cell frame (5) of support solar photovoltaic cell device (3); Said secondary speculum (2) is a convex mirror, and principal reflection mirror (1) is the concave mirror of bore greater than secondary speculum (2), and secondary speculum (2) and principal reflection mirror (1) one in front and one in back are provided with along optical axis direction forms the cassegrain type optically focused combined system of looking in the distance; The sensitive surface of solar-energy photo-voltaic cell device (3) is positioned on the optical axis of secondary speculum (2) rear side and over against secondary speculum (2).
2. high-efficiency solar photovoltaic battery beam condensing unit according to claim 1 is characterized in that: said secondary speculum supporting and positioning device (4) is made up of the clear optical glass plate that is pasted on secondary speculum (2) front side.
3. high-efficiency solar photovoltaic battery beam condensing unit according to claim 2; It is characterized in that: the quantity of said light focusing unit is a plurality of; The optical axis of each light focusing unit is parallel to each other, and the secondary speculum (2) of a plurality of light focusing unit is pasted on the diverse location of same clear optical glass plate rear side.
4. according to claim 2 or 3 described high-efficiency solar photovoltaic battery beam condensing units; It is characterized in that: the minute surface of said principal reflection mirror (1) is parabola or the quadratic surface or the sphere of symmetric form, and the minute surface of said secondary speculum (2) is parabola or the quadratic surface or the sphere of symmetric form; The look in the distance focal plane of optically focused combined system of said cassegrain type is positioned at the rear side of principal reflection mirror (1); The center of principal reflection mirror (1) offers loophole; The sensitive surface of solar-energy photo-voltaic cell device (3) be positioned at the rear side of loophole and be positioned at cassegrain type look in the distance the optically focused combined system position, focal plane or position near, the solar-energy photo-voltaic cell monomer that solar-energy photo-voltaic cell device (3) is little by light-receiving area, conversion efficiency is high and heat resistance is good constitutes.
5. high-efficiency solar photovoltaic battery beam condensing unit according to claim 4 is characterized in that: the minute surface of said principal reflection mirror (1) and secondary speculum (2) is respectively the parabola of symmetric form; Said solar-energy photo-voltaic cell monomer is a GaAs solar-energy photo-voltaic cell device (3); Said solar-energy photo-voltaic cell frame (5) is provided with heat abstractor.
6. high-efficiency solar photovoltaic battery beam condensing unit according to claim 4; It is characterized in that: funnel type internal reflection light conductor (6) is installed in the loophole of said principal reflection mirror (1), and funnel type internal reflection light conductor (6) along optical axis direction from front to back bore reduce gradually.
7. high-efficiency solar photovoltaic battery beam condensing unit according to claim 6 is characterized in that: the perpendicular cross section of said funnel type internal reflection light conductor (6) and optical axis is rounded or square.
8. high-efficiency solar photovoltaic battery beam condensing unit according to claim 6 is characterized in that: be provided with the heat insulation colour filter (7) that is coated with infrared cut coating in the said funnel type internal reflection light conductor (6).
9. according to claim 2 or 3 described high-efficiency solar photovoltaic battery beam condensing units; It is characterized in that: the minute surface of said principal reflection mirror (1) is parabola or the quadratic surface or the sphere of cylindrical; The minute surface of said secondary speculum (2) is parabola or the quadratic surface or the sphere of cylindrical, and the cylinder central shaft of principal reflection mirror (1) and secondary speculum (2) is parallel to each other; The look in the distance focal plane of optically focused combined system of said cassegrain type is positioned between principal reflection mirror (1) and the secondary speculum (2); The sensitive surface of solar-energy photo-voltaic cell device (3) is positioned at cassegrain type and looks in the distance between the focal plane and principal reflection mirror (1) of optically focused combined system; Said solar-energy photo-voltaic cell device (3) is by two above light-receiving areas are big, photoelectric conversion efficiency is low and the solar-energy photo-voltaic cell monomer of heat resistance difference forms along the cylinder central axis direction arrangement that is parallel to secondary speculum (2).
10. high-efficiency solar photovoltaic battery beam condensing unit according to claim 9 is characterized in that: the minute surface of said principal reflection mirror (1) is the parabola of cylindrical, and the minute surface of said secondary speculum (2) is the sphere of cylindrical; Said solar-energy photo-voltaic cell monomer is monocrystalline silicon battery or amorphous silicon battery; Said solar-energy photo-voltaic cell frame (5) is provided with heat abstractor.
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| CN2011102816006A CN102306674B (en) | 2011-09-21 | 2011-09-21 | High-efficient solar photovoltaic battery condensation device |
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| CN102623539A (en) * | 2012-03-09 | 2012-08-01 | 中国科学院长春光学精密机械与物理研究所 | Cassegrain structure-based high-power solar concentrator array system |
| CN103066145A (en) * | 2013-01-11 | 2013-04-24 | 中国科学院苏州纳米技术与纳米仿生研究所 | Condensation combination system based on minitype gallium arsenide photovoltaic cell |
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