CN110798141B - Photovoltaic power generation device - Google Patents
Photovoltaic power generation device Download PDFInfo
- Publication number
- CN110798141B CN110798141B CN201911189916.5A CN201911189916A CN110798141B CN 110798141 B CN110798141 B CN 110798141B CN 201911189916 A CN201911189916 A CN 201911189916A CN 110798141 B CN110798141 B CN 110798141B
- Authority
- CN
- China
- Prior art keywords
- light
- component
- photovoltaic cell
- power generation
- shell
- 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.)
- Active
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 78
- 210000003850 cellular structure Anatomy 0.000 claims abstract description 57
- 230000005855 radiation Effects 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 14
- 239000011521 glass Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 76
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 16
- 238000002834 transmittance Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 206010027339 Menstruation irregular Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/20—Optical components
- H02S40/22—Light-reflecting or light-concentrating means
-
- 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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
本发明公开了一种光伏发电装置，包括至少一个光伏发电单元；光伏发电单元包括壳体、透光组件、反光组件和第一光伏电池组件；壳体的一侧设置有开口，且透光组件设置在开口处；反光组件设置在壳体的底部，并与壳体的底部所在的水平面之间形成夹角θ0；第一光伏电池组件设置于壳体的顶部与反光组件相对的位置；并且，透过透光组件的入射光经反光组件反射后至第一光伏电池组件上。本发明提供的光伏发电装置，实现对太阳光的高效利用，同时相对封闭的空间保护光伏电池组件使其表面不产生污损，便于维护。
The present invention discloses a photovoltaic power generation device, comprising at least one photovoltaic power generation unit; the photovoltaic power generation unit comprises a shell, a light-transmitting component, a light-reflecting component and a first photovoltaic cell component; an opening is arranged on one side of the shell, and the light-transmitting component is arranged at the opening; the light-reflecting component is arranged at the bottom of the shell, and forms an angle θ 0 with the horizontal plane where the bottom of the shell is located; the first photovoltaic cell component is arranged at the top of the shell opposite to the light-reflecting component; and the incident light passing through the light-transmitting component is reflected by the light-reflecting component to the first photovoltaic cell component. The photovoltaic power generation device provided by the present invention realizes efficient use of sunlight, and at the same time, the relatively closed space protects the photovoltaic cell component so that its surface is not contaminated, which is convenient for maintenance.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation device.
Background
Solar power generation is a new energy power generation method which is the most mature in the prior art, and a solar photovoltaic power generation technology is the most widely applied solar application technology which is the most suitable for popularization and application. Photovoltaic power generation is a technology that uses the photovoltaic effect of a semiconductor interface to directly convert light energy into electrical energy. The efficient photovoltaic power generation device can remarkably improve the solar power generation efficiency. The current photovoltaic power generation device mainly adopts an inclined flat plate structure photovoltaic cell, and sunlight directly irradiates on the photovoltaic cell to obtain the radiation quantity so as to generate power. The photovoltaic power generation device with the structure has the advantages that the photovoltaic cells with the inclined flat plate structure occupy extremely space positions and have limited utilization of sunlight, and furthermore, the surfaces of the photovoltaic cells are easy to be stained, so that the power generation efficiency of the photovoltaic power generation device is influenced, and the surface cleaning is required to be carried out at irregular periods, so that the operation cost is obviously increased.
Disclosure of Invention
The invention aims to solve the problems that the existing photovoltaic power generation device has limited utilization of sunlight, the surface is easy to be stained to influence the power generation efficiency, and the cleaning is troublesome. The shell is arranged, solar radiation light irradiated on the light reflecting component is reflected to the photovoltaic cell component arranged opposite to the light reflecting component by utilizing the light reflecting component at the bottom of the shell, part of light is reflected to the light reflecting component again, and then the light is reflected to the photovoltaic cell component for the second time, so that efficient utilization of sunlight is realized, the shell of the device forms a relatively airtight space, and the surface of the photovoltaic cell component is protected to be difficult to stain.
The invention discloses a photovoltaic power generation device which comprises at least one photovoltaic power generation unit, wherein the photovoltaic power generation unit comprises a shell, a light transmission component, a light reflection component and a first photovoltaic cell component, one side of the shell is provided with an opening, the light transmission component is arranged at the opening, the light reflection component is arranged at the bottom of the shell and forms an included angle theta 0 with the horizontal plane where the bottom of the shell is located, the first photovoltaic cell component is arranged at the position where the top of the shell is opposite to the light reflection component, and incident light transmitted through the light transmission component is reflected by the light reflection component and then is transmitted to the first photovoltaic cell component.
By adopting the scheme, when the incident light of solar radiation enters the device through the light transmission component and enters the light reflection component, the incident light irradiates the first photovoltaic cell component arranged on the reflection path of the reflected light after being reflected, the light is absorbed and converted into electric energy by the first photovoltaic cell component, part of the light irradiates the light reflection component again after being reflected, and then irradiates the first photovoltaic cell component through secondary reflection, so that the light is efficiently utilized, and the device is provided with the shell to form a relatively closed space to protect the surface of the photovoltaic cell component and prevent the surface of the photovoltaic cell component from being polluted easily.
According to another embodiment of the present invention, the photovoltaic power generation device disclosed in the embodiment of the present invention, the photovoltaic power generation unit further includes a second photovoltaic cell assembly, and the second photovoltaic cell assembly is disposed in a position opposite to the light transmission assembly in the housing, so as to receive the light reflected by the light reflection assembly.
According to the technical scheme, the incident angle of the first photovoltaic cell assembly reflected by the reflecting assembly changes due to the fact that the solar altitude angle becomes smaller at certain time, scattered light is generated, the utilization rate of the reflected light is reduced, the second photovoltaic cell assembly which is opposite to the light transmitting assembly is arranged, the reflected light irradiates the second photovoltaic cell assembly of the first photovoltaic cell assembly at the same time, the scattered light is further utilized, and the utilization rate of the reflected light is improved.
According to another embodiment of the present invention, in the photovoltaic power generation device disclosed in the embodiment of the present invention, an included angle θ 0 formed by the light reflection component and a horizontal plane where the bottom of the housing is located is:
wherein H 0 is the noon solar altitude of the use land.
By adopting the technical scheme, the included angle theta 0 is set according to the noon solar altitude angle of the applicable land, when the solar altitude angle is H 0, incident light enters the device through the light-transmitting component of the sunny side of the device and enters the reflecting component, the light irradiates the first photovoltaic cell component positioned on the upper side of the device after being reflected, most of the light is absorbed by the first photovoltaic cell, part of the set included angle is reflected to irradiate the reflector again, and then the light irradiates the first photovoltaic cell at the top through secondary reflection, so that the high-efficiency utilization of the light is realized.
According to another specific embodiment of the invention, the included angle between the first photovoltaic battery component and the horizontal plane where the top of the shell is located is beta, beta is more than or equal to 0 degrees and less than or equal to theta 0, and beta is a fixed value or adjustable.
By adopting the scheme, the first photovoltaic cell component is parallel to the horizontal plane where the top of the shell is positioned or adjusts the included angle between the first photovoltaic cell component and the horizontal plane according to the light reflected by the light reflecting component, so that the utilization rate of reflected light is improved. And when the solar altitude becomes smaller at certain time, the incident angle reflected to the first photovoltaic cell assembly changes, and the incident angle is adjusted by adjusting the included angle between the first photovoltaic cell assembly and the horizontal plane where the top of the shell is positioned, so that the utilization rate of reflected light is improved.
According to another specific embodiment of the invention, the shell is of a cuboid or square structure, the light reflecting component is arranged on the inner bottom of the shell, one end of the light reflecting component is fixedly connected with the bottom of one side of the shell, the other end of the light reflecting component is fixedly connected with the other side of the shell opposite to the light transmitting component, and the first photovoltaic cell component is fixedly connected in the top.
By adopting the technical scheme, the device has a stable overall structure and a neat shape. The single photovoltaic power generation unit can be used as one module, and a plurality of photovoltaic power generation units can be combined into a multi-module device, so that the application of the device is facilitated.
According to another embodiment of the present invention, the photovoltaic power generation device disclosed in the embodiment of the present invention, the height H of the housing 40 is:
H=L(tgθ0+tgH0)
Wherein L is the width between the side face where the light-transmitting component is positioned in the shell and the opposite other side face, H 0 is the noon sun altitude angle of the using place, and theta 0 is the included angle formed by the light-reflecting component and the horizontal plane where the bottom of the shell is positioned.
By adopting the technical scheme, the height H of the shell is set according to the width L of the bottom of the shell and the noon solar altitude angles H 0 and theta 0 of the use land, so that the first photovoltaic cell component obtains the maximum total solar radiation energy all the day, and the solar radiation light energy utilization rate is improved.
According to another specific embodiment of the invention, the photovoltaic power generation device disclosed by the embodiment of the invention further comprises a third photovoltaic cell component, wherein the third photovoltaic cell component is arranged on the side surface adjacent to the light transmission component in the shell, the light reflection component is divided into a main body section and an adjusting section along the horizontal extending direction of the light transmission component, the adjusting section is arranged on one side, far away from the third photovoltaic cell component, of the shell, the adjusting section forms an included angle phi with the horizontal surface where the main body section is positioned, the included angle phi is adjustable, and the included angle phi is:
Φ=90-15×(ST-12)
Wherein ST is the true solar time when the solar radiation intensity reaches 50W/m 2.
By adopting the above scheme, when the deviation between the incident light and the normal direction of the light-transmitting component is large, the incident light may fall on the side of the device after being reflected by the light-reflecting component 10, so that the photovoltaic component is also mounted on the side of the device. In addition, the end part of the reflecting component is provided with an extending end, an included angle phi is formed between the reflecting component and the horizontal plane, the angle of the reflected light rays entering the third photovoltaic cell component can be adjusted according to time, and the utilization rate of the reflected light is improved.
According to another specific embodiment of the present invention, in the photovoltaic power generation device disclosed in the embodiment of the present invention, the length W 0 of the adjustment section along the direction in which the light-transmitting component horizontally extends is:
W0=1/5×W
Wherein W is the length of the light reflecting component along the direction in which the light transmitting component horizontally extends.
By adopting the scheme, the light reflecting component is mainly used for reflecting light to the first photovoltaic cell component, part of the light is used for reflecting the light to the third photovoltaic cell component, distribution is reasonable, and the utilization rate of the reflected light is improved.
According to another specific embodiment of the invention, the photovoltaic power generation device disclosed by the embodiment of the invention comprises at least two photovoltaic power generation units, wherein each photovoltaic power generation unit is adjacently arranged, and the bottom of a shell of one photovoltaic power generation unit is connected with the top of a shell of the other photovoltaic power generation unit.
By adopting the scheme, a plurality of photovoltaic power generation units are mutually connected by virtue of the bottom and the top to form a multi-module device, and the whole structure is neat. The photovoltaic power generation device disclosed in the embodiment can be applied to a building curtain wall and is installed on a sunny side of a building.
According to another specific embodiment of the invention, the photovoltaic power generation device disclosed by the embodiment of the invention is characterized in that the light-transmitting component is high-light-transmitting glass, and the light-reflecting component is a glass light-reflecting lens.
By adopting the technical scheme, the light transmittance of the high-light-transmittance glass can reach more than 91.5%, the reflectivity of the glass reflecting mirror can reach 100%, and the utilization rate of solar radiation light can be improved.
The photovoltaic power generation device provided by the invention realizes the efficient utilization of sunlight, and meanwhile, the relatively closed space protects the photovoltaic cell assembly from being stained on the surface, so that the photovoltaic power generation device is convenient to maintain.
Drawings
FIG. 1 is a side cross-sectional view of one embodiment of a photovoltaic power generation apparatus of the present invention;
FIG. 2 is a side cross-sectional view of an embodiment of the photovoltaic power generation apparatus of this invention comprising a second photovoltaic cell assembly;
FIG. 3 is a front cross-sectional view of one embodiment of a photovoltaic power generation apparatus of the present invention;
Fig. 4 is a side cross-sectional view of an embodiment of the photovoltaic power generation apparatus of this invention comprising at least two photovoltaic power generation units.
Reference numerals:
10, a light reflecting component, 11, a main body section, 12, an adjusting section, 20, a light transmitting component, 31, 32, 33, 40, a first photovoltaic cell component, 32, a second photovoltaic cell component, 33, a third photovoltaic cell component and a shell.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details for the purpose of providing a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.
The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or communicating between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The embodiment of the invention discloses a photovoltaic power generation device, which comprises at least one photovoltaic power generation unit, as shown in fig. 1-3, wherein the photovoltaic power generation unit comprises a shell 40, a light transmission component 20, a light reflection component 10 and a first photovoltaic cell component 31, one side of the shell 40 is provided with an opening, the light transmission component 20 is arranged at the opening, the light reflection component 10 is arranged at the bottom of the shell 40 and forms an included angle theta 0 with the horizontal plane where the bottom of the shell 40 is located, the first photovoltaic cell component 31 is arranged at the position, opposite to the light reflection component 10, of the top of the shell 40, and incident light transmitted through the light transmission component 20 is reflected by the light reflection component 10 and then flows onto the first photovoltaic cell component 31.
Specifically, as shown in fig. 1-3, a photovoltaic power generation unit housing 40, wherein a light-transmitting member 20 is disposed on an opening of one side of the housing 40. The light reflecting component 10 is arranged at the inner bottom of the shell 40 and forms an included angle theta 0 with the horizontal plane where the bottom of the shell 40 is located, and the first photovoltaic cell component 31 is arranged at the top of the shell 40 at a position opposite to the light reflecting component 10 and one end of the first photovoltaic cell component is close to one end of the light transmitting component 20 on the shell 40. The light-transmitting member 20 should be disposed at a side having incident light of the sun to transmit solar radiation light irradiated thereon, the incident sunlight transmitted through the light-transmitting member 20 may be reflected by the light-reflecting member 10, the reflected light reflected by the light-reflecting member 10 is irradiated onto the first photovoltaic cell member 31, and the first photovoltaic cell member 31 converts the reflected light energy into electric energy. In this arrangement, to achieve that the light reflecting component 10 reflects the incident light transmitted through the light transmitting component 20 to the first photovoltaic cell component 31, the light reflecting component 10 is disposed on a side far from the sunlight irradiation position, particularly, on a side close to the ground, in the device, and the first photovoltaic cell component 31 is disposed on a path of the reflected light after the incident light is reflected. In one embodiment, as shown in fig. 1-3, the light transmissive element 20 is perpendicular to the horizontal plane, and the light reflective element 10 is inclined upward from the end connected to the light transmissive element 20 and forms an angle θ 0 with the horizontal plane.
More specifically, the housing 40 may be made of metal, plastic, or other material having rigidity for supporting the photovoltaic power generation device, and the light-transmitting member 20 is fixedly connected to the housing 40. In order for the light-transmitting member 20 to sufficiently transmit light, the height of the side of the housing 40 should be close to the height of the light-transmitting member 20, i.e., the light-transmitting member 20 substantially constitutes one side of the housing 40. The light reflecting component 10 is disposed on the inner bottom of the housing 40, wherein one end of the light reflecting component 10 is fixedly connected with the bottom of the housing 40 by means of bonding, riveting, etc., and can be simultaneously fixedly connected with the bottom of the light transmitting component 20, an included angle theta 0 is formed between the one end of the light reflecting component 10 and the horizontal plane where the bottom is located, when theta 0 is more than 0, the other end of the light reflecting component 10 is fixedly connected with the other side surface of the housing 40 opposite to the light transmitting component 20 by means of bonding, riveting, etc., and when theta 0 =0, the bottom of the light reflecting component 10 can also be fixedly connected with the bottom of the housing 40.
The first photovoltaic cell assembly 31 is disposed at a top side of the housing 40, and the first photovoltaic cell assembly 31 may be adjacent to or connected to a top end of a side of the light transmitting assembly 20 on the housing 40 in order to make the device compact and make full use of the light transmitting assembly 20.
It should be noted that the housing 40 includes at least a side surface and a bottom surface, and may include a top surface, where the first photovoltaic cell assembly 31 is disposed in the top surface of the housing 40 or the first photovoltaic cell assembly 31 is a part of the top surface, or may not include the top surface, and the first photovoltaic cell assembly 31 forms the top surface of the housing. The first photovoltaic cell assembly 31 may be attached to the corresponding surface by a special material, or may be fixedly mounted by a bracket, or may be connected to the housing by a connecting member.
And, in order to improve the utilization rate of the incident light of the sun. The light-transmitting component 20 is made of high light-transmitting material, such as high light-transmitting glass, high light-transmitting plastic, etc., and the light transmittance is preferably above 90%, and the light-reflecting component 10 can be made of glass reflector, ceramic reflector, metal reflector, etc., and the reflectivity is preferably above 90%. θ 0 may be specifically determined according to the solar altitude and the position of the first photovoltaic cell assembly 31 relative to the light reflecting assembly 10 at noon when the photovoltaic power generation device is installed, and is set so as to minimize the normal angle between the light reflected by the light reflecting assembly 10 and the first photovoltaic cell assembly 31.
By adopting the above scheme, when the incident light of solar radiation enters the device through the light transmission component 20 and enters the light reflection component 10, the incident light irradiates the first photovoltaic cell component 31 arranged on the reflection path of the reflected light after being reflected, the light is absorbed and converted into electric energy by the first photovoltaic cell component 31, part of the electric energy is reflected to irradiate the reflector again, and then the electric energy irradiates the first photovoltaic cell component 31 through secondary reflection, so that the high-efficiency utilization of the light is realized. In addition, the device is provided with the shell 40 to form a relatively airtight space, so that the surface of the first photovoltaic cell assembly 31 is protected from being polluted easily, and the maintenance is convenient.
According to another embodiment of the present invention, the photovoltaic power generation unit further includes a second photovoltaic cell assembly 32, and the second photovoltaic cell assembly 32 is disposed in the housing 40 at a position opposite to the light transmitting assembly 20 to receive the light reflected by the light reflecting assembly 10.
It should be noted that, as shown in fig. 2, at some time, for the sunlight incident along the angle θ 1, part of the light reflected by the light reflecting component 10 is transmitted to the second photovoltaic cell component 32 disposed opposite to the light transmitting component 20, the equivalent incident angle is (2θ 0+θ1), which is far greater than the initial incident angle θ 1 of the sun, so that the power generation efficiency is significantly increased.
By adopting the technical scheme, the incident angle of the first photovoltaic cell assembly 31 reflected by the reflecting assembly 10 changes due to the fact that the solar altitude angle becomes smaller at certain time, scattered light is generated, the utilization rate of the reflected light is reduced, the second photovoltaic cell assembly 32 which is arranged opposite to the light transmitting assembly 20 is arranged, the reflected light irradiates the first photovoltaic cell assembly 31 and the second photovoltaic cell assembly 32 at the same time, the scattered light is further utilized, and the utilization rate of the reflected light is improved.
According to another embodiment of the invention, it also comprises a photovoltaic cell assembly disposed opposite to the first photovoltaic cell assembly 31. Specifically, the first photovoltaic cell assembly 31 and the photovoltaic cell assembly may be disposed separately and opposite to each other, or may be two sides of a bifacial photovoltaic cell.
By adopting the scheme, the photovoltaic cell assembly is arranged on the back surface of the first photovoltaic cell assembly 31, and the photovoltaic cell assembly directly faces solar radiation to generate electricity, so that the utilization rate of sunlight is increased.
According to another embodiment of the present invention, the included angle θ 0 formed by the horizontal plane at the bottom of the housing 40 is:
wherein H 0 is the noon solar altitude of the use land.
Specifically, the solar elevation angle H 0 of the installation place at noon is calculated by assuming that the solar declination of the installation place is represented by delta, and the geographical latitude of the observation place is represented by deltaRepresentation, then:
In the case of the northern hemisphere, the base of the sphere,
For the southern hemisphere, the reference numeral,
H 0 has a calculated value of between 0 and 90 and thus a value of θ 0 of between 0 and 45.
The smaller the normal included angle between the incident light and the photovoltaic panel, namely the larger the incident angle, the higher the power generation efficiency of the photovoltaic panel. The maximum time of solar radiation energy is at noon, the included angle between the reflecting component 10 and the horizontal plane is adjusted according to the noon solar altitude, and in this embodiment, when the bottom of the photovoltaic power generation device housing 40 is disposed on the ground, the included angle between the refracted light at the peak time of power generation in one day and the normal direction of the first photovoltaic cell assembly 31 is minimized.
By adopting the scheme, the included angle theta 0 is set according to the noon solar altitude angle of the applicable land, so that the utilization rate of solar radiation light in noon is improved. When the maximum solar altitude angle is H 0, incident light enters the device through the light transmission component 20 on the sunny side of the device and enters the light reflection component 10, the light irradiates the first photovoltaic cell component 31 positioned on the upper side of the device after being reflected, most of the light is absorbed by the first photovoltaic cell, part of the light is reflected and irradiates the reflector again, and then the light irradiates the top photovoltaic cell through secondary reflection, so that the high-efficiency utilization of the light is realized.
According to another embodiment of the invention, as shown in figures 1-4, the angle between the first photovoltaic cell assembly and the horizontal plane at the top of the housing is beta, and beta is 0 deg. to beta. To theta 0, beta being a fixed value or an adjustable variation.
Specifically, as shown in fig. 4, the first photovoltaic cell assembly 31 may be parallel to a horizontal plane where the top of the housing 40 is located, and fixedly disposed, i.e., β=0°, and the first photovoltaic cell assembly 31 may be fixedly connected to the top of the housing 40. The first photovoltaic cell assembly 31 may also be disposed at an inclined angle with respect to a horizontal plane where the top of the housing 40 is located, as shown in fig. 1-2, where the inclined angle β between the first photovoltaic cell assembly 31 and the horizontal plane where the top of the housing 40 is located satisfies 0 ° < β+.ltoreq.θ 0, where β may be fixedly disposed, and the arrangement should at least minimize the normal angle between the sunlight at noon reflected by the light reflecting assembly 10 and the photovoltaic cell assembly 31, so as to achieve the purpose of improving the light utilization rate.
The included angle β may be set to be more than or equal to 0 ° and less than or equal to θ 0, and the included angle β may be adjustable, specifically, the first photovoltaic cell assembly 31 and the top of the housing 40 may be rotatably connected by means of a shaft connection, riveting, or the like, so that the included angle β may be adjustable, and a fixing member may be further required to be provided to fix the first photovoltaic cell assembly 31 at a certain angle relatively. The top of the casing 40 may be rotatably connected with the side surface at one end, and the other end may be opened with the other side surface, the first photovoltaic cell assembly 31 is fixedly connected with the top of the casing 40, and the angle β between the first photovoltaic cell assembly 31 and the horizontal plane where the top of the casing 40 is located is adjustable by opening a certain angle on the top.
On the basis of calculating the optimal theta 0 according to the solar altitude at noon of the use place, the solar altitude at other times except noon can be reduced in one day, the incident angle of the solar energy reflected to the first photovoltaic cell component 31 can be changed, the included angle beta is adjustable, the incident angle can be adjusted by adjusting the included angle beta, and the utilization rate of reflected light can be improved. Wherein the adjustment of the angle is in the range of theta 0 to achieve maximum utilization of the total daily solar radiation as possible.
By adopting the above scheme, the first photovoltaic cell assembly 31 sets the horizontal plane relation between the first photovoltaic cell assembly 31 and the top of the shell 40 according to the light reflected by the light reflecting assembly 10, and forms an inclined included angle between the first photovoltaic cell assembly 31 and the horizontal plane of the top of the shell 40 in parallel or in a setting manner, so that the utilization rate of reflected light is improved. And, when the incident angle reflected to the first photovoltaic cell assembly 31 changes due to the decrease of the solar altitude at some time, the incident angle is adjusted by adjusting the included angle between the first photovoltaic cell assembly 31 and the horizontal plane where the top of the housing 40 is located, thereby improving the reflected light utilization rate.
According to another embodiment of the present invention, as shown in fig. 4, the housing 40 has a rectangular or square structure, the reflective component 10 is disposed on the inner bottom of the housing 40, one end of the reflective component is fixedly connected to the bottom of one side of the housing 40, the other end of the reflective component is fixedly connected to the other side of the housing 40 opposite to the light-transmitting component 20, and the first photovoltaic cell component 31 is fixedly connected in-plane.
Specifically, the light-transmitting component 20 is perpendicular to a horizontal plane where the bottom of the casing 40 is located, an included angle θ 0 is formed between the bottom and one end of the light-reflecting component 10 connected with the light-transmitting component 20, the first photovoltaic cell component 31 is parallel to the light-reflecting component 10, and an included angle β is formed between the light-transmitting component 20 and the first photovoltaic cell component 31, which may be fixed to 0 ° or may be adjustable. A second photovoltaic cell assembly 32 may also be disposed on the side of the housing 40 opposite the light transmissive assembly 20.
By adopting the technical scheme, the device has a stable overall structure and a neat shape. The single photovoltaic power generation unit can be used as one module, and a plurality of photovoltaic power generation units can be combined into a multi-module device, so that the application of the device is facilitated.
According to another embodiment of the invention, the height H of the housing 40 is:
H=L(tgθ0+tgH0)
Wherein L is the width between the side surface of the light-transmitting component 20 in the shell 40 and the opposite side surface, H 0 is the noon sun altitude angle of the using place, and θ 0 is the included angle formed by the light-reflecting component 10 and the horizontal plane of the bottom of the shell 40.
Specifically, on the basis that the optimal θ 0 is calculated according to the solar noon altitude of the use place, and the housing 40 is in a cuboid or square structure, according to the width L of the bottom of the housing 40, the included angle θ 0 formed by the light reflecting component 10 and the horizontal plane where the bottom of the housing 40 is located is calculated and set according to the solar noon altitude H 0 of the use place, and the height of the housing 40 is calculated and set by adopting the formula, so that the first photovoltaic cell component 31 receives the least shadow coverage of the reflected light all the day, and the maximum total solar radiation energy all the day is obtained.
The width of the housing 40 may be designed according to specific needs.
By adopting the scheme, the height H of the shell 40 is set according to the width L of the bottom of the shell 40 and the noon solar altitude angles H 0 and theta 0 of the use land comprehensively, so that the first photovoltaic cell assembly 31 obtains the maximum total solar radiation energy in the whole day, and the solar radiation light energy utilization rate is improved.
According to another embodiment of the present invention, as shown in fig. 3, the solar cell module further comprises a third photovoltaic cell module 33, wherein the third photovoltaic cell module 33 is arranged on the side surface adjacent to the light transmitting module 20 in the housing 40, the light reflecting module 10 is divided into a main body section 11 and an adjusting section 12 along the direction that the light transmitting module 20 horizontally extends, the adjusting section 12 is arranged on the side, far away from the third photovoltaic cell module 33, of the housing 40, an included angle phi is formed between the adjusting section 12 and the horizontal surface where the main body section 11 is located, and the third photovoltaic cell module 33 receives light reflected by the adjusting section 12 of the light reflecting module 10.
Specifically, the third photovoltaic cell assembly 33 is disposed on one or both sides of the light-transmitting assembly 20 adjacent thereto, and the third photovoltaic cell assembly 33 is perpendicular to the horizontal plane at the bottom of the housing 40. The light reflecting component 10 is provided with an adjusting section 12 along one or two ends of the direction in which the light transmitting component 20 horizontally extends, and the other parts are main body sections 11. The adjusting section 12 corresponding to each third photovoltaic cell assembly 33 is disposed at the opposite side of the third photovoltaic cell assembly 33, and the horizontal plane where the adjusting section 12 and the main body section 11 are located forms an included angle Φ, so that solar radiation enters through the light-transmitting assembly 20, and reflected light reflected by the adjusting section 12 is directed to the third photovoltaic cell assembly 33. It should be noted that, the included angle Φ may be fixed or adjustable.
With the above-mentioned scheme, when the deviation between the incident light and the normal direction of the light-transmitting component 20 is large, the incident light may fall on the device side after being reflected by the light-reflecting component 10, and thus the photovoltaic component 33 is also mounted on the device side. In addition, the end part of the light reflecting component is provided with an extending end, and an included angle is formed between the extending end and the horizontal plane, so that the angle of the reflected light rays entering the third photovoltaic cell component 33 can be adjusted, and the utilization rate of the reflected light can be improved.
Further, the included angle Φ is adjustable, and the included angle Φ is:
Φ=90-15×(ST-12)
Wherein ST is the true solar time when the solar radiation intensity reaches 50W/m 2.
Specifically, the main body section 11 and the adjusting section 12 on the light reflecting component 10 are rotatably connected by means of shaft connection, riveting and the like, so that the included angle phi can be adjusted. ST was counted at 24 hours. True solar time = flat solar time + time difference, flat solar time refers to the time of day of the country region referenced at ordinary times, such as Beijing time, with equal time intervals each day, time difference = (local longitude-120)/15.
By adopting the scheme, the included angle phi is adjusted according to time, so that the incidence angle of the sunlight at a period of low solar altitude angle after the sunlight is reflected to the third photovoltaic cell assemblies 33 arranged on one side or two sides adjacent to the light-transmitting assembly 20 is improved, and the utilization rate of reflected light is improved.
According to another embodiment of the present invention, the length W 0 of the adjustment section 12 in the direction in which the light-transmissive component 20 extends horizontally is:
W0=1/5×W
Wherein W is the length of the light reflecting component 10 along the direction in which the light transmitting component 20 extends horizontally.
Specifically, when the third photovoltaic cell assembly 33 is disposed on one side, the length of the light reflecting assembly 10 of the adjusting section 12 is 1/5 of the length W, so that the main body section 11 occupies 4/5 of the length W of the light reflecting assembly 10 for reflecting light to the first photovoltaic cell assembly 31, and when the third photovoltaic cell assembly 33 is disposed on the bright side, the adjusting section 12 is two, so that the main body section 11 occupies 3/5 of the length W of the light reflecting assembly 10 for reflecting light to the first photovoltaic cell assembly 31.
When W is relatively large or small, W 0 may be increased or decreased according to circumstances. Furthermore, the length W 0 of the adjustment section 12 in the direction in which the light-transmitting assembly 20 extends horizontally may also be calculated based on other parameters, such as the solar altitude at which the effective solar radiation is produced earliest daily in use, so long as the solar light utilization efficiency during periods of lower solar altitude is improved.
By adopting the scheme, the light reflecting component 20 is mainly used for reflecting light to the first photovoltaic cell component 31, part of the light is used for reflecting the light to the third photovoltaic cell component 33, distribution is reasonable, and the utilization rate of the reflected light is improved.
According to another embodiment of the present invention, as shown in fig. 4, the photovoltaic power generation apparatus includes at least two photovoltaic power generation units, each of which is disposed adjacently, and the bottom of the case 40 of one of the photovoltaic power generation units is connected with the top of the case 40 of the other photovoltaic power generation unit.
Specifically, the multiple housings 40 are connected to each other by means of the bottom and the top to form a multi-module device, and the overall structure is neat, and more specifically, the housings can be non-detachably and fixedly connected by means of bonding, welding and the like, and also can be detachably and fixedly connected by means of screw connection, pin connection and the like. The conventional flat-plate solar photovoltaic power generation device needs to keep an inclined angle, and the structure cannot be widely popularized in the aspect of green buildings due to the extremely occupied space position, and the photovoltaic power generation device disclosed by the embodiment can be applied to building curtain walls.
By adopting the scheme, a plurality of photovoltaic power generation units are mutually connected by virtue of the bottom and the top to form a multi-module device, and the whole structure is neat. The photovoltaic power generation device disclosed in the embodiment can be applied to a building curtain wall and is installed on a sunny side of a building.
In the photovoltaic power generation device disclosed in the embodiment of the invention, the light-transmitting component 20 is high-light-transmitting glass.
By adopting the technical scheme, the high-transmittance glass has the transmittance of more than 91.5 percent, and the utilization rate of solar radiation light can be improved.
According to another embodiment of the present invention, the photovoltaic power generation device disclosed in the embodiment of the present invention, the light reflecting component 10 is a glass light reflecting lens.
By adopting the technical scheme, the reflectivity of the glass reflecting mirror can reach 100 percent, and the utilization rate of reflected light can be improved.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention with reference to specific embodiments, and it is not intended to limit the practice of the invention to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present invention.
Claims (5)
1. A photovoltaic power generation device, comprising at least one photovoltaic power generation unit;
The photovoltaic power generation unit comprises a shell, a light transmission component, a light reflection component, a first photovoltaic cell component, a second photovoltaic cell component and a third photovoltaic cell component;
An opening is formed in one side of the shell, and the light-transmitting component is arranged at the opening;
The light reflecting component is arranged at the bottom of the shell, one end of the light reflecting component is fixedly connected with the bottom of one side of the shell, the other end of the light reflecting component is fixedly connected with the other side of the shell relative to the light transmitting component, and an included angle is formed between the light reflecting component and the horizontal plane where the bottom of the shell is positioned The included angleThe method comprises the following steps:
wherein, Solar elevation angle at noon for the use land;
The first photovoltaic cell component is fixedly connected to the position, opposite to the light reflecting component, of the top of the shell, an included angle between the first photovoltaic cell component and a horizontal plane where the top of the shell is located is beta, and the included angle is more than or equal to 0 degree and less than or equal to beta The incident light transmitted through the light transmission component is reflected by the light reflection component and then is transmitted to the first photovoltaic cell component;
the second photovoltaic cell component is arranged at a position opposite to the light-transmitting component in the shell so as to receive the light reflected by the light-reflecting component;
The light reflecting component is divided into a main body section and an adjusting section along the direction of the horizontal extension of the light transmitting component, the adjusting section is arranged on one side of the shell far away from the third photovoltaic cell component, an included angle phi is formed between the adjusting section and the horizontal surface where the main body section is located, the included angle phi is adjustable, and the included angle phi is:
Φ=90-15×(ST-12)
Wherein ST is the true solar time when the solar radiation intensity reaches 50W/m 2.
2. The photovoltaic power generation device of claim 1, wherein the height H of the housing is:
Wherein L is the width between the side face of the light-transmitting component and the opposite other side face in the shell, To use the noon solar altitude of the ground,An included angle is formed between the reflecting component and the horizontal plane where the bottom of the shell is located.
3. The photovoltaic power generation device according to claim 1, wherein a length W 0 of the adjustment section in a direction in which the light-transmitting member horizontally extends is:
W0=1/5×W
wherein W is the length of the light reflecting component along the direction in which the light transmitting component horizontally extends.
4. A photovoltaic power plant according to any of claims 1-3, characterized in that the photovoltaic power plant comprises at least two photovoltaic power generation units, each of which is arranged adjacent to each other, and
The bottom of the housing of one of the photovoltaic power generation units is connected to the top of the housing of the other of the photovoltaic power generation units.
5. The photovoltaic power generation device of any of claims 1-3, wherein the light transmissive component is a high light transmissive glass and the light reflective component is a glass light reflective lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911189916.5A CN110798141B (en) | 2019-11-28 | 2019-11-28 | Photovoltaic power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911189916.5A CN110798141B (en) | 2019-11-28 | 2019-11-28 | Photovoltaic power generation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110798141A CN110798141A (en) | 2020-02-14 |
| CN110798141B true CN110798141B (en) | 2025-01-24 |
Family
ID=69446618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911189916.5A Active CN110798141B (en) | 2019-11-28 | 2019-11-28 | Photovoltaic power generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110798141B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111464127B (en) * | 2020-04-13 | 2021-09-17 | 德州润泽新能源科技有限公司 | Folding turnover type solar panel |
| CN119254088A (en) * | 2024-02-16 | 2025-01-03 | 三亚豺特光伏科技有限公司 | Side-light gain cylindrical photovoltaic module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019213834A1 (en) * | 2018-05-08 | 2019-11-14 | 博立码杰通讯(深圳)有限公司 | Double-sided concentrated solar device and system |
| CN211701960U (en) * | 2019-11-28 | 2020-10-16 | 宁夏大学 | A photovoltaic power generation device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007027423A (en) * | 2005-07-15 | 2007-02-01 | Univ Of Electro-Communications | Solar cell element and photovoltaic power generation device |
| KR102274301B1 (en) * | 2014-03-14 | 2021-07-07 | 주성엔지니어링(주) | Solar power system and solar power generating method using the same |
| CN106386254B (en) * | 2016-06-12 | 2022-08-02 | 安阳师范学院 | Light ray adjusting method for photovoltaic power generation greenhouse |
| KR101921956B1 (en) * | 2017-07-31 | 2019-02-13 | 한국광기술원 | Method and Apparatus for Generating Solar Photovoltaic Power |
| WO2019178798A1 (en) * | 2018-03-22 | 2019-09-26 | 博立多媒体控股有限公司 | Side surface light-concentrating solar device |
-
2019
- 2019-11-28 CN CN201911189916.5A patent/CN110798141B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019213834A1 (en) * | 2018-05-08 | 2019-11-14 | 博立码杰通讯(深圳)有限公司 | Double-sided concentrated solar device and system |
| CN211701960U (en) * | 2019-11-28 | 2020-10-16 | 宁夏大学 | A photovoltaic power generation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110798141A (en) | 2020-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102782421B (en) | Array module of parabolic solar energy receivers | |
| US8281782B2 (en) | Method and apparatus for arranging a solar cell and reflector | |
| JP5337961B2 (en) | Solar tracking module device | |
| US20080308090A1 (en) | Solar Concentrator | |
| US20110192460A1 (en) | Solar Power Generator | |
| EP2047518B1 (en) | Arrangement of solar cell and reflectors | |
| US9660122B2 (en) | Compact LCPV solar electric generator | |
| CN101867319A (en) | Rotating trough reflector array with solid-state optics for solar power generation | |
| KR20120115072A (en) | Compact structured solar power generation equipment with improved power generation efficiency | |
| US20110259397A1 (en) | Rotational Trough Reflector Array For Solar-Electricity Generation | |
| CN110798141B (en) | Photovoltaic power generation device | |
| EP4145699A1 (en) | Photovoltaic system for low solar elevation angles | |
| US20170353145A1 (en) | Methods for Sunlight Collection and Solar Energy Generation | |
| EP2482331A1 (en) | High-concentration photovoltaic solar module | |
| JP7161235B2 (en) | How to Install Solar Modules for Efficient Use of Sunlight | |
| US20160336897A1 (en) | Apparatus for Sunlight Collection and Solar Energy Generation | |
| CN211701960U (en) | A photovoltaic power generation device | |
| US20140216521A1 (en) | Solar Electrical Generator System | |
| KR102691150B1 (en) | Light collecting module | |
| CN103456806A (en) | Low-power concentrating photovoltaic module | |
| US20100206357A1 (en) | Two-Part Solar Energy Collection System With Replaceable Solar Collector Component | |
| KR102656003B1 (en) | frame for setting solar module | |
| KR20240068131A (en) | Photovoltaic apparatus using bifacial solar cell | |
| Morichetti et al. | “Gondola”: Trackless LCPV module for Si cells with low-aspect ratio and high energy rating | |
| KR20240142792A (en) | Light collecting module for double-sided solar cell panel and array structure having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |