Solar Energy Utilization Unit

Abstract

The solar energy utilization unit includes a light energy utilization device, a liquid light collecting device, and a reflecting structure. The sunlight can be reflected by the reflecting structure to reach the light energy utilization device located at the middle of the liquid light collecting device. In the liquid light collecting device, the sunlight traveling from the transparent liquid toward the translucent side wall or the translucent top wall is transmitted or totally reflected, so that more sunlight can be collected on the first light energy utilization section and the second light energy utilization section of the light energy utilization device. The reflecting structure allows a portion of the sunlight outside the light receiving range of the liquid light collecting device to be reflected to reach the first light energy utilization section and the second light energy utilization section of the light energy utilization device, improving the light collecting efficiency of the solar energy utilization unit.

Description

[Technical field]

[0001] The present invention relates to a light energy conversion and utilization structure, and in particular to a solar energy utilization unit. [Background technology]

[0002] Solar energy utilization devices are used to recycle solar energy, for example to generate solar power through solar panels. As the cost of solar panels decreases and their efficiency increases, the use of solar energy utilization devices is becoming more and more common. However, there is room for further improvement in the concentration efficiency of solar energy in current low-magnification concentrating solar power generation devices. Summary of the Invention

[0003] The present invention mainly provides a new type of solar energy utilization unit to present a new solar energy utilization structure.

[0004] Based on the above object, in one embodiment, the present invention provides a solar energy utilization unit including a light energy utilization device, a liquid concentrator, and a reflecting structure.

[0005] The light energy utilization device has a first light energy utilization unit and a second light energy utilization unit that can receive, convert, and utilize sunlight, and the first light energy utilization unit and the second light energy utilization unit are arranged back to back.

[0006] The liquid light collecting device has a receiving cavity filled with a transparent liquid, the receiving cavity has a light-transmitting top wall and an inclined light-transmitting side wall, the light energy utilization device is disposed in a middle part of the receiving cavity, the first light energy utilization part and the second light energy utilization part are perpendicular to the light-transmitting top wall, the light-transmitting side wall are disposed on both sides of the liquid light collecting device, and the sunlight can reach the first light energy utilization part and the second light energy utilization part by transmitting through the light-transmitting top wall or the light-transmitting side wall and / or being totally reflected by the light-transmitting top wall or the light-transmitting side wall.

[0007] A light-reflecting cavity is formed between the reflective structure and the light-transmitting side wall of the liquid collecting device, and sunlight entering the light-reflecting cavity can be reflected by the reflective structure and reach the light-transmitting side wall of the liquid collecting device.

[0008] In one embodiment, a light inlet for allowing sunlight to enter is provided between the reflecting structure and the liquid light collecting device, and the light inlet communicates with the light reflecting cavity.

[0009] In one embodiment, an upper end portion of the light-transmitting sidewall extends to the reflecting structure, the light-reflecting cavity is a sealed cavity, and the sunlight can pass through the light-transmitting sidewall of the liquid concentrating device to reach the light-reflecting cavity.

[0010] In one embodiment, the light reflecting cavities are located on both sides and the bottom of the liquid light collector.

[0011] In one embodiment, the reflective structure is a groove-shaped structure having an internal reflective surface for reflecting sunlight to the translucent sidewall of the liquid collector, and the light energy utilization device and the liquid collector are disposed within the groove-shaped structure.

[0012] In one embodiment, the cross section of the liquid light collecting device has an inverted triangular structure, and the light energy utilization device is disposed perpendicular to the middle of the inverted triangular structure.

[0013] In one embodiment, the light-transmitting sidewall is flat, folded or curved.

[0014] In one embodiment, at least a portion of the light-transmitting sidewall is a tooth surface of a Fresnel lens.

[0015] In one embodiment, the tooth surface of the Fresnel lens is located at an upper end portion of the light-transmitting side wall.

[0016] In one embodiment, a light-transmitting top cover is disposed on the light-transmitting top wall of the liquid light-collecting device, the light-transmitting top cover and the reflecting structure form a sealed cavity, and the liquid light-collecting device and the light energy utilization device are sealed in the cavity.

[0017] In one embodiment, the light-transmitting top cover is a Fresnel lens surface.

[0018] In one embodiment, the light-transmitting ceiling wall and the light-transmitting top cover of the liquid light collecting device overlap or share one transparent surface.

[0019] In one embodiment, the translucent ceiling wall or translucent top cover of the liquid light collecting device can totally reflect sunlight from the translucent side wall or reflective structure, and can also concentrate a portion of the sunlight towards the light energy utilization device in a total reflection manner.

[0020] In one embodiment, the liquid collecting device includes two separate sealed cavities, the light energy utilization device is located between the two separate sealed cavities, and the first light energy utilization portion and the second light energy utilization portion are each joined to one vertical light-transmitting wall of one of the sealed cavities.

[0021] In one embodiment, the transparent liquid comprises deionized purified water, glycerin, alcohol, ethylene glycol, or a mixture thereof.

[0022] In one embodiment, the light energy utilization device is a double-sided solar panel or a double-sided photovoltaic unit.

[0023] In the actual manufacturing and installation process, the solar energy utilization units of the present invention can be integrated together to form an array. Effect of the Invention

[0024] The solar energy utilization unit according to the above embodiment includes a light energy utilization device, a liquid light collecting device, and a reflecting structure. The sunlight can be reflected by the reflecting structure and reach the light energy utilization device located at the middle of the liquid light collecting device. In the liquid light collecting device, the sunlight traveling from the transparent liquid toward the translucent side wall is transmitted or totally reflected, so that more sunlight can be collected on the first light energy utilization section and the second light energy utilization section of the light energy utilization device. The reflecting structure allows a portion of the sunlight outside the light receiving range of the liquid light collecting device to be reflected and reach the first light energy utilization section and the second light energy utilization section of the light energy utilization device, improving the light collecting efficiency of the solar energy utilization unit. [Brief description of the drawings]

[0025] [Figure 1] 1 is a schematic vertical cross-sectional view of a solar energy utilization unit according to one embodiment of the present invention. [Diagram 2] 1 is a schematic vertical cross-sectional view of a solar energy utilization unit according to one embodiment of the present invention. [Diagram 3] 1 is a schematic vertical cross-sectional view of an assembled structure of a solar energy utilization unit according to one embodiment of the present invention. [Figure 4] 1 is a schematic vertical cross-sectional view of an assembled structure of a solar energy utilization unit according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] The present invention will be described in more detail below with reference to the drawings through specific embodiments. For similar parts in different embodiments, relevant similar part symbols are adopted. Many detailed descriptions in the following embodiments are provided for a better understanding of the present invention. However, those skilled in the art can easily recognize that some features can be omitted in different situations or can be replaced by other parts, materials and methods. In order to avoid the core part of the present invention being buried by excessive description, some operations according to the present invention may not be shown or described in the specification. For those skilled in the art, it is not necessary to describe these related operations in detail, and those skilled in the art can fully understand the related operations based on the description in this specification and general technical knowledge in the field.

[0027] It should be noted that the features, operations, or characteristics described herein may be combined in any suitable manner to form various embodiments. Also, the steps or actions in the method descriptions may be reordered or adjusted in a manner that would be apparent to one of ordinary skill in the art. Thus, any order in the specification and drawings is merely for the purpose of clarifying one embodiment, and does not imply a required order unless specifically stated that a particular order must be followed.

[0028] The part numbers in this specification, such as "first", "second", etc., are used only to distinguish the objects described and do not have any order or technical meaning. In addition, "connection" described in the present invention includes direct and indirect connection unless otherwise specified.

[0029] In this specification, positional relationships such as up, down, left, and right are relative and do not have an absolute meaning.

[0030] The present embodiment provides a solar energy utilization unit that is used to receive and utilize sunlight to perform energy conversion and convert the sunlight into electrical energy, thermal energy and other forms of energy for people to use.

[0031] 1 to 4. The liquid solar energy utilization unit according to this embodiment includes a light energy utilization device 100, a liquid light collecting device 200, a reflecting structure 300, and a light-transmitting top cover 400.

[0032] The light energy utilization device 100 has a first light energy utilization unit 110 and a second light energy utilization unit 120 that can receive, convert, and utilize sunlight. The first light energy utilization unit 110 and the second light energy utilization unit 120 are arranged back to back. In one embodiment, the light energy utilization device 100 may be one or more of a double-sided solar cell panel, a light heat utilization device, a photovoltaic and thermal energy integrated utilization device, and a light-concentrating type light energy utilization device. The solar cell panel generally refers to a device that directly converts light energy into electrical energy, and includes various semiconductor solar cell panels, film-type solar cells, quantum dot photoelectric conversion elements, etc. In other embodiments, the first light energy utilization unit 110 and the second light energy utilization unit 120 may be other types of solar energy utilization conversion structures.

[0033] As one of the features of the present invention, the light energy utilization device 100 is disposed vertically in the middle of the liquid light collecting device 200 , and the first light energy utilization part 110 and the second light energy utilization part 120 are vertical to the light-transmitting top cover 400 .

[0034] The liquid light collector 200 has a receiving cavity filled with a transparent liquid 201. The cross section of the liquid light collector 200 (a plane parallel to the drawing in FIG. 1) is an inverted triangular structure, and the receiving cavity has two inclined light-transmitting side walls 210 and one horizontal or nearly horizontal light-transmitting top wall 220. The sunlight can reach the reflecting structure 300 through the light-transmitting side walls 210 or the light-transmitting top wall 220 and / or reach the light energy utilization device 100 by being totally reflected by the light-transmitting side walls 210 or the light-transmitting top wall 220. The liquid light collector 200 with the inclined light-transmitting side walls 210 can accommodate a larger deflection angle of the incident light, and can accommodate not only the north-south return deflection of the sunlight, but also the east-west deflection of the sunlight. In one embodiment, the light-transmitting side walls 210 may be composed of a flat surface, a folded surface, a curved surface, or a combination thereof. In another embodiment, at least a portion of the optically transmissive sidewall 210 may be a tooth surface of a Fresnel lens, thereby forming a liquid Fresnel lens together with the transparent liquid 201. For example, an upper end portion of the optically transmissive sidewall 210 is a tooth surface of a Fresnel lens, and a lower end portion of the optically transmissive sidewall 210 is a flat surface. The liquid light collector 200 typically further has an end portion (not shown) for forming a receiving cavity together with the optically transmissive sidewall and the optically transmissive top wall.

[0035] The light energy utilization device 100 is disposed in a storage cavity, and the first light energy utilization unit 110 and the second light energy utilization unit 120 each face the light-transmitting side wall 210 of the liquid light collecting device 200. In the storage cavity, at least a part of the sunlight incident from the transparent liquid 201 toward the light-transmitting side wall 210 undergoes a total reflection phenomenon, whereby the sunlight is collected on the first light energy utilization unit 110 or the second light energy utilization unit 120. Here, the structure of the liquid light collecting device 200 is set as follows. The sunlight incident from the transparent liquid 201 toward the light-transmitting side wall 210 at a certain angle can cause a total reflection (or total internal reflection) phenomenon. That is, the sunlight from a certain angle is not emitted from the light-transmitting side wall 210, but continues to propagate in the liquid light collecting device 200 by the action of total reflection, and is finally collected on the first light energy utilization unit or the second light energy utilization unit. For certain designs, sunlight traveling from the transparent liquid 201 toward the translucent sidewall 210 at other angles may be transmitted to the reflective structure 300 and then concentrated to the first light energy utilization section or the second light energy utilization section of the light energy utilization device.

[0036] In this embodiment, a transparent liquid 201 is used as a light propagation medium, and the light-transmitting side wall 210 in this embodiment not only transmits light but also totally reflects it. Compared with the conventional technology, under the same conditions, the liquid light collecting device 200 can collect more sunlight to the first light energy utilization unit or the second light energy utilization unit, and the light collecting efficiency is improved.

[0037] In addition, in order to concentrate more sunlight on the liquid collector 200, the reflecting structure 300 is disposed on the outside and bottom of the liquid collector 200, for example, on one or more sides of the liquid collector 200. The reflecting structure 300 has a reflecting surface that can concentrate sunlight on the center of the liquid collector 200. The upper end of the reflecting structure 300 is wider than the liquid collector 200, and a light inlet of the reflecting structure is provided between the reflecting structure 300 and the liquid collector 200 for the sunlight to enter, and a light reflecting cavity having a light inlet is formed between the reflecting structure 300 and the light-transmitting side wall 210 of the liquid collector 200. The reflecting structure 300 expands the range of the liquid collector 200 that receives sunlight, so that more sunlight can be concentrated in the light reflecting cavity and then reflected by the light reflecting cavity to reach the liquid collector 200. For example, the sunlight is reflected by the reflecting structure 300 to reach the light-transmitting sidewall 210 of the liquid light collector 200 and is finally guided to the first light energy utilization unit 110 or the second light energy utilization unit 120 .

[0038] In one embodiment, no light inlet is provided between the reflecting structure 300 and the liquid light collector 200, and the upper end of the light-transmitting sidewall 210 of the liquid light collector 200 extends until it is connected to the upper end of the reflecting structure 300, and a sealed light-reflecting cavity is formed between the reflecting structure 300 and the light-transmitting sidewall 210 of the liquid light collector 200, and the sunlight passes through the light-transmitting sidewall 210 and reaches the light-reflecting cavity, and the sunlight that enters the light-reflecting cavity is further reflected by the light-reflecting cavity to reach the light-transmitting sidewall 210 of the liquid light collector 200, and finally guided to the first light energy utilization unit 110 or the second light energy utilization unit 120. The sealed light-reflecting cavity similarly expands the range of the liquid light collector 200 that receives sunlight, and more sunlight is concentrated to the first light energy utilization unit 110 or the second light energy utilization unit 120.

[0039] Specifically, in one embodiment, the light energy utilization device 100 may be immersed in a transparent liquid 201, and the first light energy utilization unit 110 and the second light energy utilization unit 120 may directly receive sunlight that has passed through the transparent liquid 201.

[0040] A part or the whole of the space in the liquid collector 200 is filled with the transparent liquid 201. In one embodiment, for better effect, the transparent liquid 201 is preferably filled almost completely in the entire receiving cavity.

[0041] In one embodiment, the transparent liquid 201 may be deionized purified water, glycerin, alcohol, ethylene glycol, or a mixture thereof.

[0042] In addition, the transparent liquid 201 can directly or indirectly form a heat transfer structure with the first light energy utilization unit 110 and the second light energy utilization unit 120. This provides a cooling effect or a heat absorption effect on the first light energy utilization unit 110 and the second light energy utilization unit 120, improving the light energy utilization rate.

[0043] Please refer to Figures 1 to 4. In one embodiment, the vertical cross section of the liquid light collecting device 200 has an inverted triangular (V-shaped or wedge-shaped) structure, the upper opening is larger than the bottom, and the light energy utilization device 100 is vertically disposed in the middle of the liquid light collecting device 200 having the inverted triangular structure to achieve the light collecting effect. Of course, this shape is just an example, and other shapes are also possible.

[0044] Please refer to Figures 1 to 4. In order to prevent dust and facilitate cleaning, in one embodiment, a light-transmitting top cover 400 is further provided to seal the reflective structure 300 to form a sealed structure. The light-transmitting top cover 400 may be a Fresnel lens surface or other light-transmitting structure. The light-transmitting top cover 400 may be integrally connected to the reflective structure 300 by a connection manner such as engagement, screw connection, adhesion, etc.

[0045] Please refer to FIG. 2. In one embodiment, in order to increase the light collection rate, each of the multiple light-transmitting side walls 210 of the liquid light collecting device includes a first portion 2101 and a second portion 2102, the first portion 2101 being a flat or curved surface, and the second portion 2102 being a tooth surface of a Fresnel lens. The inclination of the two portions inclined to the light energy utilization device 100 is different, the inclination of the first portion 2101 in FIG. 2 is smaller, and the inclination of the second portion 2102 is larger, and the first portion 2101 with the smaller inclination is advantageous for collecting light to the first light energy utilization unit 110 and the second light energy utilization unit 120. Of course, the same inclination may be used for the first portion 2101 and the second portion 2102 of the light-transmitting side wall 210. The tooth surface of the Fresnel lens and the transparent liquid 201 in the liquid light collecting device constitute a liquid Fresnel lens.

[0046] See Figure 3. In one embodiment, the light-transmitting top cover 400 may be a Fresnel lens that is integrated with the light-transmitting top wall of the liquid light collector, thereby allowing the light-transmitting top wall of the liquid light collector to be omitted.

[0047] In one embodiment, the light-transmitting ceiling wall or light-transmitting top cover 400 of the liquid light-collecting device 200 can totally reflect sunlight from the light-transmitting side wall 210 or the reflecting structure 300, and can also concentrate a portion of the sunlight towards the light energy utilization device in a totally reflected manner.

[0048] Please refer to Fig. 4. In one embodiment, the liquid light collecting device 200 is composed of two sealed containing cavities filled with transparent liquid, the light energy utilization device 100 is sandwiched between the two sealed containing cavities, and the first light energy utilization part 110 and the second light energy utilization part 120 are each bonded to one vertical light-transmitting wall 230 of one containing cavity.

[0049] In one embodiment, the liquid light collector 200 has an inverted triangular (V-shaped or wedge-shaped) structure. In another embodiment, the inverted polygonal light collector groove is a pentagonal light collector groove.

[0050] In one embodiment, the liquid light collecting device 200 is thermally connected to a reflecting structure 300 at the bottom to utilize the reflecting structure to dissipate heat and further reduce the temperature of each light collecting groove and the light energy utilization device.

[0051] Based on the above inventive concept, in order to better illustrate the invention of the present application, the following will further describe it by several different embodiments.

[0052] <Embodiment 1> Please refer to Fig. 1. The first embodiment discloses a solar energy utilization unit, and Fig. 1 is a schematic vertical cross-sectional view of the solar energy utilization unit. Note that the vertical and horizontal directions mentioned in the first embodiment and other embodiments are based on the illustrated arrangement direction. When the solar energy utilization unit is actually used, the direction may be adjusted according to the topography and latitude and longitude, so the illustrated arrangement direction may differ from the actual arrangement direction of the solar energy utilization unit.

[0053] The solar energy utilization unit includes a light energy utilization device 100, a liquid collector 200, a reflecting structure 300, and a transparent top cover 400. The liquid collector 200 has a sealed structure and forms a sealed containing cavity filled with a transparent liquid 201. The liquid collector 200 has a transparent side wall 210 and a transparent top wall 220. The dashed lines in FIG. 1 indicate transparent surfaces.

[0054] The liquid light collecting device 200 has an inverted triangular structure, and includes two light-transmitting side walls 210 and one horizontal light-transmitting top wall 220. The light energy utilization device 100 is vertically disposed in the middle of the inverted triangular structure, and the light energy utilization device 100 is immersed in the transparent liquid 201 of the liquid light collecting device 200, and the light energy utilization device 100 has a first light energy utilization unit 110 and a second light energy utilization unit 120 that can receive, convert and utilize sunlight, the first light energy utilization unit 110 facing right, and the second light energy utilization unit 120 facing left.

[0055] Of course, in other embodiments, the first light energy utilization part 110 of the light energy utilization device 100 may be separated from the transparent liquid in the liquid light collecting device 200 by a vertical light-transmitting wall (see embodiment 4).

[0056] Please refer to Fig. 1. The reflecting structure 300 is disposed on the outside and bottom of the liquid light collecting device 200, and the reflecting structure 300 and the light-transmitting side wall 210 form a light reflecting cavity. The light reflecting cavity has a light inlet of the reflecting structure for sunlight to enter the light reflecting cavity, and the sunlight that enters the light reflecting cavity is reflected by the reflecting structure 300 to reach the first light energy utilization unit 110 or the second light energy utilization unit 120. Specifically, a gap is provided between the reflecting structure 300 and the liquid light collecting device, forming a light inlet of the reflecting structure.

[0057] Please continue to refer to FIG. 1. In a more specific embodiment, the reflection structure 300 is a groove-shaped structure. The groove-shaped structure has an internal reflection surface for reflecting the sunlight to the first light energy utilization unit 110 or the second light energy utilization unit 120. FIG. 1 shows the convergence of three incident lights L1, L2 and L3. First, the incident light L1 is reflected by the reflection structure and enters the liquid light collector 200 from the light-transmitting side wall 210 of the liquid light collector 200, and is totally reflected by the light-transmitting top wall 220 of the liquid light collector 200 to reach the second light energy utilization unit 120 of the light energy utilization device 100. That is, the light collection effect is realized by fully utilizing the refraction and total reflection functions of the transparent liquid 201 in the liquid light collector 200. In addition, the transparent liquid 201 may also be used to cool or absorb heat for the light energy utilization device 100 and improve the light energy utilization rate of the light energy utilization device 100. That is, the light-transmitting side wall 210 has the following two functions at the same time. First, it transmits the incident light from the outside through one surface. Also, as described below, it totally reflects the light from the transparent liquid 201 at the one surface. Second, the incident light L2 enters the liquid light-collecting device 200 through the light-transmitting top wall 220 of the liquid light-collecting device 200, and is then totally reflected by the light-transmitting side wall 210 of the liquid light-collecting device 200 to reach the second light energy utilization unit 120. Third, the incident light L3 enters the light reflecting cavity from the light entrance, is reflected by the reflecting structure 300, is refracted by the light-transmitting side wall 210 of the liquid light-collecting device 200, and reaches the first light energy utilization unit 110.

[0058] In order to expand and widen the solar light receiving range of the whole unit, in one embodiment, the light energy utilization device 100, the liquid light collecting device 200 and the reflecting structure 300 form an elongated shape extending along the same direction (i.e., the horizontal direction perpendicular to the paper surface of FIG. 1). FIG. 1 shows a vertical cross section at an unspecified position in the extension direction. Of course, the unit may be designed as a simple structure. For example, the vertical cross section at any position in the extension direction of the unit has the shape shown in FIG. 1.

[0059] See Figure 1. For dust and snow protection, the light-transmitting top cover 400 and the reflective structure 300 form a sealed structure.

[0060] The first embodiment may be used in situations where light tends to be strong, for example, in high latitude locations, where it can be mounted vertically or horizontally.

[0061] <Embodiment 2> Please refer to Figure 2. Embodiment 2 discloses a solar energy utilization unit, and Figure 2 is a schematic vertical cross-sectional view of the solar energy utilization unit.

[0062] The solar energy utilization unit includes a light energy utilization device 100, a liquid light collecting device 200, a reflecting structure 300, and a light-transmitting top cover 400. The liquid light collecting device 200 and the light-transmitting top cover 400 are sealed structures, forming a sealed containing cavity filled to the brim with a transparent liquid 201. The liquid light collecting device 200 has a light-transmitting side wall 210, and does not include a light-transmitting top wall 220. In order to provide dustproof and snowproof functions, the light-transmitting top cover 400 also forms a sealed cavity with the reflecting structure 300.

[0063] In the second embodiment, the light-transmitting sidewall 210 of the liquid light collector 200 includes a first portion 2101 and a second portion 2102. The first portion 2101 is a flat or curved surface, and the second portion 2102 is a tooth surface of a Fresnel lens. The second portion 2102 forms a liquid Fresnel lens together with the transparent liquid 201 in the liquid light collector 200.

[0064] One of the differences between the second embodiment and the first embodiment is that the transparent ceiling wall 220 and the transparent top cover 400 of the liquid light collecting device 200 are integrated, and the second part 2102 is added to the transparent side wall 210, and the second part 2102 is connected to the reflection structure 300 to form a sealed light reflection cavity. In the second embodiment, the sunlight passes through the liquid Fresnel lens composed of the second part 2102 and the transparent liquid 201 to reach the light reflection cavity, and is then reflected by the reflection structure 300 to reach the first part 2101, and is finally guided to the first light energy utilization unit 110 or the second light energy utilization unit 120. The sunlight passes through the Fresnel lens to reach the light reflection cavity, thereby improving the light collection efficiency.

[0065] In one embodiment, in order to expand and widen the range of sunlight reception by the entire unit, the light energy utilization device 100, the liquid light collecting device 200 and the reflecting structure 300 form an elongated shape extending along the same direction (i.e., the horizontal direction perpendicular to the paper surface of FIG. 2). FIG. 2 shows a vertical cross section at an unspecified position in the extension direction. Of course, the unit may be designed as a simple structure. For example, the vertical cross section at any position in the extension direction of the unit has the shape shown in FIG. 2.

[0066] <Embodiment 3> The embodiment 3 shows a slight change from the embodiment 2. In the embodiment 3, the light-transmitting top cover 400 is a Fresnel lens, which can improve the light collecting efficiency.

[0067] In one embodiment, a portion of the light-transmitting sidewall 210 of the liquid light collector 200 also employs a Fresnel lens tooth surface to achieve better results.

[0068] <Embodiment 4> The fourth embodiment shows another state in which the liquid light collecting device 200 is integrated with the light-transmitting top cover 400 and the light energy utilization device 100.

[0069] Please refer to FIG. 4. The difference between the fourth embodiment and the third embodiment is that the liquid collecting device 200 is composed of two sealed containers, and the two sealed containers have a symmetrical polygonal structure. The two sealed containers have vertical light-transmitting walls 230 at positions close to each other, and the vertical light-transmitting walls 230 of the two sealed containers are respectively joined to the first light energy utilization unit 110 and the second light energy utilization unit 120 of the light energy utilization device 100. The light-transmitting top cover 400 is also replaced by two light-transmitting top walls 220 of the liquid collecting device 200. The advantage of this method is that the light energy utilization device 100 and the transparent liquid 201 in the liquid collecting device 200 are separate surfaces, so that it has higher safety.

[0070] The present invention has been described in detail above using specific examples, but the above embodiments are merely for the purpose of deepening understanding of the present invention and do not limit the present invention. The methods in each embodiment can be used in combination, and are merely examples and do not limit the basic idea of ​​the present application. Those skilled in the art can make modifications to the above specific embodiments based on the idea of ​​the present application.

Claims

1. A solar energy utilization unit including a light energy utilization device, a liquid concentrating device, and a reflecting structure, The light energy utilization device has a first light energy utilization unit and a second light energy utilization unit that can receive, convert, and utilize sunlight, and the first light energy utilization unit and the second light energy utilization unit are arranged back to back, the liquid light collecting device has a receiving cavity filled with a transparent liquid, the receiving cavity has a light-transmitting top wall and an inclined light-transmitting side wall, the light energy utilization device is disposed in a middle part of the receiving cavity, the first light energy utilization part and the second light energy utilization part are perpendicular to the light-transmitting top wall, the light-transmitting side wall are disposed on both sides of the liquid light collecting device, the sunlight can reach the first light energy utilization part and the second light energy utilization part by transmitting through the light-transmitting top wall or the light-transmitting side wall and / or being totally reflected by the light-transmitting top wall or the light-transmitting side wall, A solar energy utilization unit characterized in that a light-reflecting cavity is formed between the reflective structure and the light-transmitting side wall of the liquid collecting device, and sunlight entering the light-reflecting cavity is reflected by the reflective structure and can reach the light-transmitting side wall or the light-transmitting top wall of the liquid collecting device.

2. The solar energy utilization unit according to claim 1, characterized in that a light inlet for allowing sunlight to enter is provided between the reflection structure and the liquid concentrating device, and the light inlet is connected to the light reflection cavity.

3. 2. The solar energy utilization unit of claim 1, wherein an upper end portion of the light-transmitting side wall extends to the reflecting structure, the light-reflecting cavity is a sealed cavity, and the sunlight can pass through the light-transmitting side wall of the liquid concentrating device to reach the light-reflecting cavity.

4. 2. The solar energy utilization unit according to claim 1, wherein the light reflecting cavities are disposed on both sides and a bottom of the liquid concentrator.

5. The solar energy utilization unit described in claim 1, characterized in that the reflective structure is a groove-shaped structure having an internal reflective surface for reflecting sunlight to the translucent side wall of the liquid concentrating device, and the light energy utilization device and the liquid concentrating device are arranged within the groove-shaped structure.

6. 2. The solar energy utilization unit according to claim 1, wherein the cross section of the liquid concentrator has an inverted triangular structure, and the light energy utilization device is disposed perpendicular to the middle of the inverted triangular structure.

7. The solar energy utilization unit according to claim 1 , wherein the light-transmitting side wall is a flat surface, a bent surface, or a curved surface.

8. 2. The solar energy utilization unit according to claim 1, wherein at least a portion of the light-transmitting side wall is a tooth surface of a Fresnel lens.

9. 2. The solar energy utilization unit according to claim 1, wherein the tooth surface of the Fresnel lens is located at an upper end portion of the light-transmitting side wall.

10. A solar energy utilization unit as described in any one of claims 1 to 9, characterized in that a translucent top cover is arranged on the translucent ceiling wall of the liquid collector, the translucent top cover and the reflective structure form a sealed cavity, and the liquid collector and the light energy utilization device are sealed within the cavity.

11. 11. The solar energy utilization unit according to claim 10, wherein the light-transmitting top cover is a Fresnel lens surface.

12. The solar energy utilization unit according to claim 10, wherein the light-transmitting ceiling wall and the light-transmitting top cover of the liquid light-collecting device overlap each other or share one transparent surface.

13. A solar energy utilization unit as described in any one of claims 1 to 12, characterized in that the liquid concentrating device includes two separate sealed cavities, the light energy utilization device is located between the two separate sealed cavities, and the first light energy utilization part and the second light energy utilization part are each joined to one vertical translucent wall of one of the sealed cavities.

14. The solar energy utilization unit according to any one of claims 1 to 13, characterized in that the transparent liquid includes deionized purified water, glycerin, alcohol, ethylene glycol, or a mixture thereof.

15. The solar energy utilization unit according to any one of claims 1 to 14, characterized in that the light energy utilization device is a double-sided solar cell panel or a double-sided light and heat utilization unit.

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