WO2020029170A1

WO2020029170A1 - Water-surface solar energy apparatus

Info

Publication number: WO2020029170A1
Application number: PCT/CN2018/099604
Authority: WO
Inventors: 胡笑平
Original assignee: 博立多媒体控股有限公司; 胡笑平
Priority date: 2018-08-09
Filing date: 2018-08-09
Publication date: 2020-02-13

Abstract

A water-surface solar energy apparatus, comprising: a floating body (110), for providing support in water (W); a double-sided light-receiving device (120), which is plate-shaped overall and is arranged on the floating body in a substantially vertical manner; and a first pair of reflective plates (130, 130'), each of the reflective plates having at least one reflective face, and the two reflective faces of the first pair of reflective plates being symmetrically arranged at two sides of the double-sided light-receiving device. The water-surface solar energy apparatus of the present invention can be adapted to the deflection of the sun within a certain range, thereby being able to prolong the power generation time of a system.

Description

Water surface solar device

Technical field

[0001] The present invention relates to the field of clean energy technology, and in particular, to a surface solar device capable of being used on water.

Background technique

[0002] With the increasing demand for clean energy, solar systems have been used more and more widely. Among them, the water surface solar device has received more attention because it does not occupy land area on the one hand, and on the other hand, the relatively low ambient temperature is more conducive to ensuring the working efficiency of photovoltaic panels.

[0003] However, since the surface solar device is not suitable for combined use with a day-to-day device, the current surface solar device cannot adapt to the deflection of the sun, resulting in a short effective working time.

[0004] Therefore, it is necessary to study a water surface solar device that can better adapt to the deflection of the sun. In addition, we hope to make full use of the advantages of the surface environment.

Summary of invention

technical problem

Problem solution

Technical solutions

[0005] A water surface solar device is provided according to the present invention, comprising: a floating body for providing support in water; a double-sided light receiving device having a plate shape as a whole, which can receive sunlight on both the front and the back, and the double-sided light receiving The device is arranged substantially vertically on the floating body, and the double-sided light receiving device may include a double-sided photosensitive energy utilization device or at least two single-sided photosensitive energy utilization devices; a first pair of reflective plates, wherein Each of the reflecting plates has at least one reflecting surface, and two reflecting surfaces of the first pair of reflecting plates are symmetrically disposed on both sides of the double-sided light receiving device. Preferably, the double-sided light receiving device may be thermally connected to the water body surrounding the floating body directly or through the floating body.

The beneficial effects of the invention

Beneficial effect [0006] The water surface solar device according to the present invention is provided on the water surface through a floating body, wherein the double-sided light receiving device is vertically arranged in the middle of a symmetrical reflective plate, and the sunlight is guided to the light energy utilization device by reflection, which can not only achieve low The cost-reduced condensing can also adapt to a certain range of solar deflection without relying on the day-to-day device, which can extend the power generation time of the system. Further, the light energy utilization device can be cooled by the water body around the floating body, which is helpful to improve the photoelectric conversion efficiency.

[0007] The water surface solar device according to the present invention can be installed horizontally (that is, the opening direction of the included angle formed by each pair of reflective plates faces upward, and the reflective plates extend in the lateral direction), or it can be installed upright (that is, each pair of reflective plates The opening direction of the included angle formed by the plate is toward the side, and the reflective plate extends in the vertical direction) to meet the installation requirements in different latitudes. Preferably, a plurality of pairs of reflective plates can also be provided to increase the collection ability of sunlight by a factor of two.

[0008] Specific examples according to the present invention will be described in detail below with reference to the drawings. The numbers or serial numbers used in this document, such as "first", "second", etc., are for identification purposes only and do not have any restrictive meaning. Positional words used in this document, such as "up", "down", "front", "rear", "front", "reverse", "side", "top", "bottom", etc., only indicate Relative positional relations have no absolute meaning. Brief description of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG. 1 is a schematic diagram of a water surface solar device of Embodiment 1;

[0010] FIG. 2 is a schematic diagram of a double-sided concentrating light energy utilization device in the present invention;

[0011] FIG. 3 is a schematic diagram of a water surface solar device of Embodiment 2;

[0012] FIG. 4 is a schematic diagram of a water surface solar device of Embodiment 3;

[0013] FIG. 5 is a schematic diagram of a water surface solar device according to a fourth embodiment.

Invention Examples

Embodiments of the invention

DETAILED DESCRIPTION

Example 1

[0016] An embodiment of the water surface solar device according to the present invention can be referred to FIG. 1 and includes a floating body 110, a double-sided light receiving device 120, and a first pair of reflecting plates 130 and 130 '. W in the figure represents a body of water, LL represents sunlight, and its optical path is indicated by an arrow, and the same applies hereinafter. [0017] The floating body 110 is used to provide support in water, and can be formed by using various materials or structures that can float in the water, or it can also be fixed at the bottom of the water body.

[0018] The double-sided light receiving device 120 has a plate shape as a whole, and both sides of the double-side light receiving device 120 can receive sunlight. The double-sided light receiving device 120 is disposed substantially vertically on the floating body 110. The double-sided light-receiving device in this embodiment uses a double-sided photosensitive energy utilization device, such as a double-sided photovoltaic panel. In other embodiments, two single-sided photosensitive energy utilization devices facing in opposite directions may also be used, such as two single-sided photovoltaic panels arranged back to back. Photovoltaic panels in this article refer to any device that directly converts light energy into electrical energy, including various semiconductor photovoltaic panels, photovoltaic thin films, and quantum dot photoelectric conversion devices.

[0019] Each of the first pair of reflecting plates 130 and 13 (y) has a reflecting surface, and the two reflecting surfaces are symmetrically disposed on both sides of the double-sided light receiving device 120, and each reflecting surface faces both sides One side of the light receiving device 120. The macro shape of the reflective surface in this embodiment is a flat surface. In other embodiments, a folded surface or a curved surface may also be used, so that the two reflective surfaces are formed into a substantially 'V' shape or a 'U' shape. In terms of physical structure, the reflector can be a simple specular mirror, or a reflective Fresnel lens (that is, a Fresnel lens with a mirror coating on the back), including a reflective linear Fresnel lens. The “line Fresnel lens” means that the focus center of the lens is not a point but a line. In addition, in this embodiment, it is preferable that the first pair of reflecting plates is directly fixed on the upper surface of the floating body 110. In this way, it is possible to dispense with the support of the reflector, and also help to improve the firmness of the reflector.

[0020] As a preferred implementation manner, the light energy utilization device in this embodiment is thermally connected to the water body surrounding the floating body through the floating body, so that the power generation efficiency of solar energy can be improved by reducing the temperature of the light energy utilization device. In other embodiments, the light energy utilization device may be directly thermally connected to the water body.

[0021] As a preferred embodiment, this embodiment further includes an end reflection panel 131, which is disposed at the bottom end of the first pair of reflective plates, and the reflective surface of the end reflection panel faces the double-sided light receiving device 120. It can help improve the efficiency of sunlight collection without significantly increasing costs.

[0022] The device of this embodiment adopts an upright installation manner, and the V'-shaped opening formed by the reflective plate faces the side. In other embodiments, a horizontal installation manner may also be adopted. Regardless of the installation method, the above reflectors can be arranged in multiple pairs. For example, in the case of upright installation, it can be set to overlap front to back, and in the case of flat installation, it can be set to overlap.

[0023] In this embodiment, the double-sided light receiving device includes only a photovoltaic panel. In other embodiments, a double-sided light receiving device Other types of light energy utilization devices may also be included, such as a light heat utilization device or a combination of a photovoltaic panel and a light heat utilization device. The double-sided light receiving device may also be a combination of a light energy utilization device and a light guide device, which may be referred to as a double-sided "condensing light energy utilization device". The light guide device may be selected from, for example, a tapered cylinder and a bar groove. The top of the conical tube has a large opening and the bottom is small. The inner wall is a reflective surface, and the corresponding light energy device is arranged at the bottom of the conical tube. The width of the top of the strip-shaped groove is greater than the width of the bottom, and the groove walls on both sides are reflective surfaces, and the corresponding light energy is arranged at the bottom of the light-concentrating groove using a device. These light guide devices formed with reflective surfaces can increase the light-concentration ratio of the device at a lower cost.

[0024] As a preferred embodiment, the concentrating light energy utilization device may include multiple units, and these units are closely arranged to form a row structure or a column structure or an array structure, and each unit includes a light energy utilization device and an A cone or a condenser. This structure enables the miniaturization of a single unit, which is beneficial to reducing the height of the light receiving device while maintaining optical parameters (such as the angle of the reflective surface of the light guide device).

[0025] A preferred double-sided concentrating light energy utilization device can be referred to FIG. 2 and FIG. 2 showing a longitudinal section of the device. The device adopts the structure of integrating multiple cells, including multiple front-side cells C10 with openings on the front side and multiple reverse-side cells CIO with openings on the reverse side. Each unit includes a strip groove and a photovoltaic board provided at the bottom of the groove. C10 and C10 'are alternately arranged on the same layer, forming a wavy groove structure. Therefore, C1 0 and C10 ′ share the groove wall C11, and both sides of the groove wall C11 are reflective surfaces. The photosensitive devices C20 and C20 'provided at the bottom of C10 and C10', respectively, may use single-sided photosensitive devices, but preferably double-sided photosensitive devices to make full use of solar energy. As a preferred structure, the entire device in FIG. 2 may be packaged with a peripheral cover plate, including a transparent top cover C30, a transparent bottom cover C30 ′, and a side end cover (not shown). In the formed closed structure, a working medium may be provided for heat dissipation or heat energy utilization. To facilitate heat exchange, the end caps can be provided with pipes C41 and C42 connected to external systems.

[0026] Further preferably, the surface solar device according to the present invention may be integrally formed into a closed cavity by using a peripheral cover plate, and the double-sided light receiving device and each reflective plate are enclosed in the cavity, thereby facilitating dust cleaning and protection. Internal device. At least part of the peripheral cover plates are transparent cover plates, and these transparent cover plates are arranged on the light path where sunlight is incident on the light energy utilization device. The closed cavity itself can be formed as a floating body, such as a boat-shaped cavity.

Example 2

[0028] Another embodiment of the surface solar device according to the present invention may refer to FIG. 3, including a floating body 210, a double Surface light receiving device 220 and three pairs of reflecting plates.

[0029] The double-sided light-receiving device 220 is disposed substantially vertically on the floating body 210. Unlike the first embodiment, the double-sided light-receiving device 220 passes through the floating body 210 and directly contacts water, so that it has better heat dissipation capability.

[0030] Each of the first pair of reflective plates 230 and 230 ′ is a double-sided reflective plate, and both the front and back surfaces are reflective surfaces, and the outer reflective surface thereof helps the subsequent reflective plates to converge the light, so The outer side refers to the side of the reflector facing away from the double-sided light receiving device. Each of the second pair of reflective plates 240 and 240 'has at least one reflective surface, and the two reflective surfaces of the second pair of reflective plates are disposed below or outside the first pair of reflective plates. Both pairs of reflectors are supported by supports 231 and 231 '. Preferably, the second pair of reflective plates can also be all double-sided reflective plates. The third pair of reflecting plates 250 and 250 'are disposed below the second pair of reflecting plates and coincide with the upper surface of the floating body 210. Therefore, the upper surface of the floating body 210 can also be considered as a reflective surface.

[0031] As a preferred implementation, this embodiment further includes a Fresnel lens 260, which is disposed on an optical path before sunlight enters a reflective surface, for example, it is erected above the double-sided light receiving device 220. The Fresnel lens 260 is selected from a linear Fresnel lens and a part of a Fresnel lens, and can be used to deflect sunlight downward, so that when the sun deflects, an unfavorable side (that is, a double-sided light receiving device facing away from the sun) Side). The so-called “partial Fresnel lens” refers to the tooth surface of the Fresnel lens is not a complete symmetrical pattern but only a part of it. Fresnel lens.

Example 3

[0033] Another embodiment of the water surface solar device according to the present invention can be referred to FIG. 4 and includes a floating body 310, a double-sided light receiving device 320, and two pairs of reflective plates.

[0034] The double-sided light receiving device 320 is provided on the floating body 310 substantially vertically.

[0035] The first pair of reflecting plates 330 and 330 'are symmetrically fixed on both sides of the double-sided light receiving device 320, each of which is a double-sided reflecting plate, the front and back sides are both reflecting surfaces, and the reflecting surfaces are formed as Folded surface (in this embodiment, the folded surface specifically includes two flat portions forming an included angle with each other).

[0036] Each of the second pair of reflective plates 340 and 340 'has at least one reflective surface, and the reflective surface is also formed as a folded surface, and a part of the folded surface 341/341' is disposed on the upper surface of the floating body 310 .

[0037] This embodiment provides a simple structure suitable for use in, for example, a lake without strong wind. Example 4

[0039] Another embodiment of the water surface solar device according to the present invention may refer to FIG. 5 and includes a floating body 410, a double-sided light receiving device 420, and two pairs of reflective plates.

[0040] In this embodiment, by using a peripheral cover plate (such as the upper cover plate 411), the floating body 410 is formed into a closed cavity, and the double-sided light receiving device and each reflective plate are enclosed in the cavity. This makes the device of this embodiment not only have strong wind resistance, but also strong dust resistance. As a preferred implementation manner, the closed cavity formed by the floating body 410 in this embodiment is a ship shape, and the upper cover plate 411 thereof is a transparent cover plate.

[0041] The double-sided light receiving device 420 is disposed substantially vertically on the bottom of the boat-shaped cavity of the floating body 410.

[0042] The first pair of reflective plates 430 and 430 'are symmetrically fixed to both sides of the double-sided light receiving device 420 through the supporting members 431 and 431', and the front and back surfaces of each of the reflective plates are reflective surfaces.

[0043] The second pair of reflecting plates 440 and 440 'are disposed outside the first pair of reflecting plates 430 and 430', respectively, and each of the second pair of reflecting plates adopts a reflective linear Fresnel lens.

[0044] In addition, the bottom inner surfaces 450 and 450 'of the boat-shaped cavity of the floating body also serve as reflective surfaces, which can also be regarded as a third pair of reflective plates disposed below.

[0045] The device of this embodiment has a stable structure and good wind resistance, and is suitable for use on, for example, a sea surface with large wind and waves.

[0046]

[0047] The principle and implementation of the present invention are described in the above specific examples. It should be understood that the above implementations are only used to help understand the present invention, and should not be construed as limiting the present invention. For those of ordinary skill in the art, according to the idea of the present invention, changes can be made to the above specific implementations.

Claims

Claim

[Claim 1] A surface solar device, comprising:

A floating body for providing support in the water;

A double-sided light-receiving device has a plate shape as a whole, and both sides of the double-sided light-receiving device can receive sunlight. The double-sided light-receiving device is disposed substantially vertically on the floating body. A light energy utilization device, or including at least two light energy utilization devices that are photosensitive on one side facing in opposite directions;

The first pair of reflecting plates, each of which has at least one reflecting surface, and the two reflecting surfaces of the first pair of reflecting plates are symmetrically disposed on both sides of the double-sided light receiving device.

[Claim 2] The solar device according to claim 1, wherein:

The double-sided light receiving device is directly or through the floating body thermally connected to a water body surrounding the floating body.

[Claim 3] The solar device according to any one of the preceding claims, wherein:

Light guide devices are provided on both sides of the double-sided light receiving device, so that the double-sided light receiving device is formed as a double-sided condensing light energy utilization device.

[Claim 4] The solar energy device according to any one of the preceding claims, further comprising a Fresnel lens disposed on an optical path before sunlight enters a reflective surface, and the Fresnel lens The lens is selected from a linear Fresnel lens and a partial Fresnel lens.

[Claim 5] The solar device according to any one of the preceding claims, wherein:

Each of the first pair of reflective plates is a double-sided reflective plate, and the front and back surfaces are both reflective surfaces. The solar device further includes a second pair of reflective plates, each of which has at least one reflective surface. The two reflective surfaces of the two pairs of reflective plates are disposed below the first pair of reflective plates or on the outside of the first pair of reflective plates, and the outside refers to the side of the reflective plates facing away from the double-sided light receiving device.

[Claim 6] The solar device according to claim 5, wherein:

Each of the second pair of reflectors is a double-sided reflector, and the front and back sides are both reflective The solar device further includes a third pair of reflective plates, each of which has at least one reflective surface, and the two reflective surfaces of the third pair of reflective plates are disposed below the second pair of reflective plates or located on the second pair of reflective plates Outside.

[Claim 7] The solar device according to any one of the preceding claims, wherein:

The macro shape of the reflective surface is a flat surface, a folded surface, or a curved surface, and the reflective plate is a specular mirror or a reflective Fresnel lens.

[Claim 8] The solar device according to any one of the preceding claims, wherein:

It also includes a peripheral cover plate for forming the floating body into a closed cavity, the double-sided light receiving device and each reflective plate are enclosed in the cavity,

At least a part of the peripheral cover plate is a transparent cover plate, and the transparent cover plate is disposed on an optical path where sunlight enters the light energy utilization device.

[Claim 9] The solar device according to claim 8, wherein:

The closed cavity is formed in a boat shape, and the upper cover plate is a transparent cover plate.

[Claim 10] The solar device according to any one of the preceding claims, wherein:

At least a part of the surface of the floating body is used to serve as a reflective surface.

[Claim 11] The solar device according to any one of the preceding claims, further comprising at least one end reflection panel provided at one end portion of the first pair of reflective plates, the end reflection panel The reflective surface is facing the double-sided light receiving device.