CN203587825U - Fresnel condenser for concentrating photovoltaic assembly - Google Patents
Fresnel condenser for concentrating photovoltaic assembly Download PDFInfo
- Publication number
- CN203587825U CN203587825U CN201320739720.0U CN201320739720U CN203587825U CN 203587825 U CN203587825 U CN 203587825U CN 201320739720 U CN201320739720 U CN 201320739720U CN 203587825 U CN203587825 U CN 203587825U
- Authority
- CN
- China
- Prior art keywords
- tooth
- fresnel condenser
- profile
- periphery
- photovoltaic assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000741 silica gel Substances 0.000 claims abstract description 9
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 9
- 239000005341 toughened glass Substances 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 5
- 230000003287 optical effect Effects 0.000 abstract description 7
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
The utility model relates to a Fresnel condenser for a concentrating photovoltaic assembly, which comprises a toughened glass substrate and a tooth-shaped silica gel layer covered on the toughened glass substrate, the center part of the tooth-shaped silica gel layer is provided with a conventional arc-shaped lens structure, and the periphery part is sequentially provided with a plurality of concentric tooth-shaped rings. A multi-focusing design is carried out on the Fresnel condenser on the basis of point focusing of a traditional Fresnel condenser, an incident angle when light getting into a follow-up frustum type secondary mirror is enabled to be reduced, and a certain regulation is carried out on the incident position in the radial direction, thereby enabling the light to maintain a total reflection condition more easily when travelling in the frustum type secondary mirror under a condition of a certain concentration tracking deviation, increasing the tolerance angle of the overall concentration optical system, and improving the overall performance of the system.
Description
Technical field
The utility model relates to photovoltaic generation, relates in particular to a kind of Fresnel condenser for concentrating photovoltaic assembly.
Background technology
Concentrating photovoltaic power generation technology, is to utilize light-gathering optics that large-area solar energy collecting is generated electricity on very little a slice solar cell, thereby reduces the use amount of battery, reduces costs.In order to improve the illumination uniformity on battery face, increase the tolerance angle of condenser system simultaneously, reduce the requirement to tracking accuracy, improve system reliability, conventionally, Fresnel Lenses is used as the condenser of concentrating photovoltaic assembly.
At present, the light-gathering optics in concentrating component, often by once and secondary condensation element form, wherein a condenser is generally Fresnel condenser, two secondary mirrors are generally prismoid shaped secondary condensation mirror.The condenser that conventional Fresnel Lenses is point focusing.Fresnel Lenses, by the refraction of the little tooth of layer of silica gel, is collected sunshine, converges to the two secondary mirror planes of incidence, and light finally arrives receiver by two secondary mirrors.In the situation that tracking is good, conventional Fresnel Lenses converges to focus place by light, enters after two secondary mirrors, and light can arrive receiving plane smoothly.In certain tracing deviation situation, will there will be following problem:
First, according to refraction principle, from the light of conventional Fresnel Lenses incident, will be to the direction deviation of tracing deviation, cause the position incident of part light from two secondary mirror plane of incidence edges, thereby make light break total reflection condition and outgoing, the reduction that brings optical efficiency when two secondary mirror internal communications;
The second, according to refraction principle, through the light of conventional Fresnel Lenses incident, deflection angle will have certain increase, and the light of larger deflection angle enters after two secondary mirrors, more easily breaks total reflection condition, from two secondary mirror sidewall outgoing, the loss that brings optical efficiency;
As mentioned above, use at present the Fresnel Lenses of conventional point focusing as the concentration photovoltaic system of optically focused one secondary mirror, in certain tracing deviation situation, will have obvious optical efficiency to reduce, system tolerance is less, Shortcomings aspect system reliability.
Utility model content
The purpose of this utility model, exactly in order to address the above problem, provides a kind of novel Fresnel condenser for concentrating photovoltaic assembly.
In order to achieve the above object, the utility model has adopted following technical scheme: a kind of Fresnel condenser for concentrating photovoltaic assembly, comprise tempered glass substrate and cover the suprabasil profile of tooth layer of silica gel of tempered glass, the core of described profile of tooth layer of silica gel has conventional circular arc lens arrangement, and periphery is provided with multiple concentric profile of tooth rings successively; The conventional circular arc lens of core by the directional light of incident converge to focal plane in be formed centrally a hot spot, the periphery that the multiple concentric profile of tooth ring of periphery refracts to focal plane by the directional light of incident forms a loop hot spot, becomes the Fresnel condenser of multi-focus.
The radial distance of described multiple concentric profile of tooth rings equates, highly uprises successively from the inside to the outside, and it is large that the angle of inclination on inclined-plane becomes from the inside to the outside successively, and the periphery that multiple concentric profile of tooth rings refract to focal plane by the directional light of incident forms the continuous ring-type hot spot of a circle.
The utility model is for the Fresnel condenser of concentrating photovoltaic assembly, traditional point focusing type Fresnel Lenses is improved, adopt the thought of multi-focus, make Fresnel Lenses under directional light incident, the light of center section and periphery converges at respectively difference, forms central point hot spot and peripheral ring-type hot spot on former focal plane.Not only make in certain tracing deviation situation, position when light arrives the two secondary mirror planes of incidence is adjusted, also make the deflection angle of light when incident two secondary mirror reduce to some extent simultaneously, both all make light when two secondary mirror internal communications, more easily meet total reflection condition, thereby make in certain tracing deviation situation, the loss of optical efficiency is reduced, condenser system tolerance angle is increased, and entire system performance gets a promotion.
Accompanying drawing explanation
Fig. 1 is for the cross section structure of the Fresnel condenser of concentrating photovoltaic assembly and optical principle schematic diagram.
Embodiment
Referring to Fig. 1, the utility model is for the Fresnel condenser of concentrating photovoltaic assembly, comprise tempered glass substrate 1 and cover the suprabasil profile of tooth layer of silica gel 2 of tempered glass, the core of this profile of tooth layer of silica gel has conventional circular arc lens arrangement, and periphery is provided with multiple concentric profile of tooth rings successively; The conventional circular arc lens of core by the directional light of incident converge to focal plane in be formed centrally a hot spot, the periphery that the multiple concentric profile of tooth ring of periphery refracts to focal plane by the directional light of incident forms a loop hot spot, becomes the Fresnel condenser of multi-focus.
The radial distance of above-mentioned multiple concentric profile of tooth rings equates, highly uprises successively from the inside to the outside, and it is large that the angle of inclination on inclined-plane becomes from the inside to the outside successively, and the periphery that multiple concentric profile of tooth rings refract to focal plane by the directional light of incident forms the continuous ring-type hot spot of a circle.
The utility model for the Fresnel condenser of concentrating photovoltaic assembly in conjunction with light the propagating characteristic in optically focused two secondary mirror inside, adopt the design philosophy of multi-focus, conventional point focusing Fresnel Lenses is modified into the Fresnel Lenses of multi-focus, make in certain tracing deviation situation, light more easily meets total reflection condition when two secondary mirror internal communications, the loss of optical efficiency is reduced, thereby has increased the tolerance angle of condenser system, has improved the overall performance of system.
Claims (2)
1. the Fresnel condenser for concentrating photovoltaic assembly, it is characterized in that: comprise tempered glass substrate and cover the suprabasil profile of tooth layer of silica gel of tempered glass, the core of described profile of tooth layer of silica gel has conventional circular arc lens arrangement, and periphery is provided with multiple concentric profile of tooth rings successively; The conventional circular arc lens of core by the directional light of incident converge to focal plane in be formed centrally a hot spot, the periphery that the multiple concentric profile of tooth ring of periphery refracts to focal plane by the directional light of incident forms a loop hot spot, becomes the Fresnel condenser of multi-focus.
2. the Fresnel condenser for concentrating photovoltaic assembly as claimed in claim 1, it is characterized in that: the radial distance of described multiple concentric profile of tooth rings equates, highly uprise successively from the inside to the outside, it is large that the angle of inclination on inclined-plane becomes from the inside to the outside successively, and the periphery that multiple concentric profile of tooth rings refract to focal plane by the directional light of incident forms the continuous ring-type hot spot of a circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739720.0U CN203587825U (en) | 2013-11-20 | 2013-11-20 | Fresnel condenser for concentrating photovoltaic assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739720.0U CN203587825U (en) | 2013-11-20 | 2013-11-20 | Fresnel condenser for concentrating photovoltaic assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587825U true CN203587825U (en) | 2014-05-07 |
Family
ID=50585721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320739720.0U Expired - Lifetime CN203587825U (en) | 2013-11-20 | 2013-11-20 | Fresnel condenser for concentrating photovoltaic assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203587825U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656168A (en) * | 2013-11-20 | 2015-05-27 | 上海太阳能工程技术研究中心有限公司 | Fresnel condensing lens for concentration photovoltaic component |
| CN105807345A (en) * | 2016-04-28 | 2016-07-27 | 格莱特（天津）光电科技有限公司 | Fresnel lens for forming annular light spot |
| CN113126191A (en) * | 2021-04-27 | 2021-07-16 | 上海慧希电子科技有限公司 | Optical device and optical system |
-
2013
- 2013-11-20 CN CN201320739720.0U patent/CN203587825U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656168A (en) * | 2013-11-20 | 2015-05-27 | 上海太阳能工程技术研究中心有限公司 | Fresnel condensing lens for concentration photovoltaic component |
| CN105807345A (en) * | 2016-04-28 | 2016-07-27 | 格莱特（天津）光电科技有限公司 | Fresnel lens for forming annular light spot |
| CN113126191A (en) * | 2021-04-27 | 2021-07-16 | 上海慧希电子科技有限公司 | Optical device and optical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
|
| CX01 | Expiry of patent term |