阅读说明：本技术 光伏电站发电装置 (Photovoltaic power station power generation device ) 是由 刘荣刚 丁卫强 于 2020-05-06 设计创作，主要内容包括：本发明提供一种光伏电站发电装置,设有聚光组件支架、光伏组件支架,聚光组件支架上设有聚光组件,光伏组件支架上设有光伏组件,聚光组件包括基材层、反射层、封装层、保护层,基材层一侧为光滑表面,基材层另一侧带有花纹,基材层的花纹侧镀反射层,反射层外侧设有封装层,封装层外侧设有保护层。其解决了现有晶体硅光伏组件功率衰减严重、成本高、资源浪费的技术问题。本发明可广泛应用于光伏发电领域。(The invention provides a photovoltaic power station power generation device which is provided with a light condensation component support and a photovoltaic component support, wherein a light condensation component is arranged on the light condensation component support, a photovoltaic component is arranged on the photovoltaic component support, one side of the substrate layer is a smooth surface, the other side of the substrate layer is provided with patterns, the pattern side of the substrate layer is plated with a reflection layer, the outer side of the reflection layer is provided with a packaging layer, and the outer side of the packaging layer is provided with a protection layer. The technical problems of serious power attenuation, high cost and resource waste of the existing crystalline silicon photovoltaic module are solved. The photovoltaic power generation system can be widely applied to the field of photovoltaic power generation.)

1. A photovoltaic power station power generation device is characterized by comprising a light condensation component support and a photovoltaic component support, wherein a light condensation component is arranged on the light condensation component support, a photovoltaic component is arranged on the photovoltaic component support, the light condensation component comprises a base material layer, a reflecting layer, an encapsulating layer and a protective layer, one side of the base material layer is a smooth surface, the other side of the base material layer is provided with a pattern, the reflecting layer is plated on the pattern side of the base material layer, the outer side of the reflecting layer is provided with the encapsulating layer, and the protective layer is arranged on the outer side of the encapsulating layer;

the distance between the light-gathering component and the photovoltaic component is S, the included angle between the light-gathering component and the photovoltaic component is gamma, the length of the photovoltaic component is L, and the length of the light-gathering component is l, wherein gamma is more than or equal to 90 degrees and less than or equal to 150 degrees, S is more than 0 and less than 2L, and l is more than 0 and less than 2L.

2. The photovoltaic power plant of claim 1 wherein the substrate layer is a dielectric material having a transmission in the visible light band of 90% to 98%.

3. The photovoltaic power plant of claim 2 wherein the substrate layer is selected from ultra-white glass.

4. The photovoltaic power plant power generation device of claim 1, wherein the pattern shape on the substrate layer can be expressed by a one-dimensional functional expression, and the one-dimensional function f (x) describing the pattern shape satisfies the following transformation relationship:

wherein x is more than 0 and less than or equal to l; n is an integer, and l represents the length of the light condensing assembly in the installation inclination direction.

5. The photovoltaic power plant power generation device of claim 4, wherein the pattern shape on the substrate layer can be preferably expressed by a one-dimensional functional expression, and the specific expression is as follows:

wherein the content of the first and second substances,a_k＝tanα_k,b_k＝tanβ_kk is more than or equal to 1 and less than or equal to m, l represents the length of the light-gathering component, k and m are positive integers, α_k,β_kIs an angular parameter that determines the pattern shape.

6. The photovoltaic power plant power generation device of claim 1, characterized in that the pattern shape on the substrate layer can be expressed by a two-dimensional functional expression, and the two-dimensional function f (x, y) describing the pattern shape satisfies the following transformation relation:

wherein the content of the first and second substances,the function f (x, y) is defined in a rectangular area R (0 < x ≦ l, 0< y ≦ w), l, w respectively represent the length and width of the light-focusing assembly, and m, n are integers.

7. The photovoltaic power plant power generation device of claim 6, wherein the pattern shape on the substrate layer can be preferably expressed by a two-dimensional functional expression, and the specific expression is as follows:

f(x,y)＝A|sin(k_xx)sin(k_yy)| (5)

wherein A is the height of the pattern, k_x,k_yThe functions f (x, y) are defined in a rectangular region R (0 < x ≦ l, 0< y ≦ w), and l, w respectively represent the length and width of the light focusing assembly.

8. The photovoltaic power plant power generation device of claim 1, wherein the photovoltaic module and the photovoltaic module support, and the light gathering module support are all detachably and fixedly connected, the photovoltaic module and the light gathering module both maintain a fixed included angle with a horizontal plane, and the photovoltaic module and the light gathering module are oppositely arranged.

9. The photovoltaic power plant of claim 1 wherein the pattern on the substrate layer is described by a one-dimensional or two-dimensional function, the pattern having a protrusion dimension λ of any one of the protrusion elements in each direction_kThe value range of (1 nm) is less than or equal to lambda_kLess than or equal to 10mm, wherein k is a positive integer.

Technical Field

The invention belongs to the technical field of new energy, relates to a power generation device, and particularly relates to a device for optimizing power generation of a photovoltaic power station.

Background

Solar energy is an inexhaustible renewable resource, and does not produce any environmental pollution, and in the effective utilization of solar energy, the photovoltaic technology gradually enters the daily life of people, wherein the widely applied crystalline silicon solar cell utilizes crystalline silicon photovoltaic components to absorb light energy and generate photoelectric conversion so as to generate electric energy.

The crystalline silicon photovoltaic module comprises a plurality of crystalline silicon battery pieces, the initial photoinduced attenuation degree of the photovoltaic module can be directly influenced by the content of boron and oxygen in the silicon pieces, and the power of the photovoltaic module linearly attenuates at the later stage due to the yellowing of EVA (ethylene vinyl acetate) in the photovoltaic module and the quality problem of a back plate. For crystalline silicon photovoltaic modules, the typical first year maximum attenuation value is 3%, and thereafter the module power attenuation can reach 20% at 0.7% linear attenuation each year. The attenuation of the component power directly influences the annual power generation amount of the power station, and wastes matching resources such as land, a bracket and an inverter. The problem of power attenuation of photovoltaic modules has severely limited the development of photovoltaic power stations and has become an important factor influencing the benefits of photovoltaic power stations.

Disclosure of Invention

Aiming at the technical problems of serious power attenuation, high cost and resource waste of the existing crystalline silicon photovoltaic module, the invention provides a photovoltaic power station generating set for improving the generating capacity of a power station by increasing the density of light flow irradiating on the photovoltaic module.

Therefore, the technical scheme includes that the photovoltaic power station power generation device is provided with a light condensation assembly support and a photovoltaic assembly support, wherein a light condensation assembly is arranged on the light condensation assembly support, a photovoltaic assembly is arranged on the photovoltaic assembly support, the light condensation assembly comprises a base material layer, a reflecting layer, an encapsulating layer and a protective layer, one side of the base material layer is a smooth surface, the other side of the base material layer is provided with patterns, the reflecting layer is plated on the pattern side of the base material layer, the encapsulating layer is arranged on the outer side of the reflecting layer, and the protective layer is arranged on the;

the distance between the light-gathering component and the photovoltaic component is S, the included angle between the light-gathering component and the photovoltaic component is gamma, the length of the photovoltaic component is L, and the length of the light-gathering component is l, wherein gamma is more than or equal to 90 degrees and less than or equal to 150 degrees, S is more than 0 and less than 2L, and l is more than 0 and less than 2L.

Preferably, the substrate layer is a dielectric material with the transmittance reaching 90-98% in the visible light band.

Preferably, the substrate layer is made of ultra-white glass.

Preferably, the pattern shape on the substrate layer can be expressed by a one-dimensional functional expression, and the one-dimensional function f (x) describing the pattern shape satisfies the following transformation relation:

wherein x is more than 0 and less than or equal to l; n is an integer, and l represents the length of the light condensing assembly in the installation inclination direction.

Preferably, the pattern shape on the substrate layer can be expressed by a one-dimensional functional expression, and the specific expression is as follows:

whereinl denotes the length of the light-focusing assembly, k, m are positive integers, α_k,β_kIs an angular parameter that determines the pattern shape.

Preferably, the pattern shape on the substrate layer can be expressed by a two-dimensional function expression, and the two-dimensional function f (x, y) describing the pattern shape satisfies the following transformation relation:

wherein the content of the first and second substances,the function f (x, y) is defined in a rectangular region R (0 < x ≦ l, 0< y ≦ w). l, w respectively represent the length and width of the light-focusing component, and m, n are integers.

Preferably, the pattern shape on the substrate layer can be expressed by a two-dimensional functional expression, and the specific expression is as follows:

f(x,y)＝A|sin(k_xx)sin(k_yy)| (5)

wherein A is the height of the pattern, k_x,k_yThe functions f (x, y) are defined in a rectangular region R (0 < x ≦ l, 0< y ≦ w), and l, w respectively represent the length and width of the light focusing assembly.

Preferably, the photovoltaic module and the photovoltaic module support and the light gathering module support are both in detachable fixed connection, the photovoltaic module and the light gathering module are both kept at fixed included angles with the horizontal plane, and the photovoltaic module and the light gathering module are arranged oppositely.

Preferably, the pattern on the substrate layer can be described by a one-dimensional function or a two-dimensional function, and the projection dimension λ of any one projection unit of the pattern in each direction_kThe value range of (1 nm) is less than or equal to lambda_kLess than or equal to 10mm, wherein k is a positive integer.

The invention has the following beneficial effects:

(1) s is more than 0 and less than 2L, which can better meet the cleaning requirement of the photovoltaic power station, gamma is more than or equal to 90 degrees and less than or equal to 150 degrees, l is more than 0 and less than 2L, which is beneficial to increasing the density of light stream irradiated on the photovoltaic component;

(2) the base material layer adopts a shape expressed by a one-dimensional function, the structure is simple, the processing is convenient, the cost of the device is reduced, and for the conditions of different regions, patterns formed by adopting the one-dimensional function expression are applied on the base material layer, so that the generated energy of the photovoltaic power station can be improved by 6-8%;

(3) the base material layer adopts the pattern expressed by the two-dimensional function shape, so that sunlight can be reflected in more directions, the light stream density irradiated on the photovoltaic module is increased, and further the power generation capacity of the photovoltaic module is improved, and for different areas, the pattern formed by the two-dimensional function expression is applied to the base material layer, so that the power generation capacity of a photovoltaic power station can be improved by 8-10%;

(4) the high-light-transmission substrate layer can effectively protect the reflecting layer, the reflecting layer can increase the light stream density irradiated on the photovoltaic module, the packaging layer is used for protecting the reflecting layer from being damaged, and the protective layer can play a role in protecting the reflecting layer and the packaging layer;

(5) according to the invention, the low-power light-gathering component is utilized to increase the power generation capacity of the photovoltaic power station by 6% -10%, the power generation capacity of the photovoltaic power station is increased in unit time, the income is increased, the requirement of solar power generation at the present stage is met, and considerable economic benefit and social benefit are achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a light focusing assembly in an embodiment of the present invention;

FIG. 3 is a schematic diagram of a pattern shape obtained by a one-dimensional function expression of the surface of ultra-white glass according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a pattern shape obtained by a two-dimensional function expression of an ultra-white glass surface according to an embodiment of the present invention.

The symbols in the drawings illustrate that:

1. a light focusing assembly; 11. ultra-white glass; 12. a reflective layer; 13. a packaging layer; 14. a protective layer; 2. a photovoltaic module; 3. a light focusing assembly support; 4. photovoltaic module support.

Detailed Description

The present invention will be further described with reference to the following examples.