Solar Energy Utilization Device

Abstract

The solar energy utilization device includes a light energy utilization device and at least one liquid concentrator. The liquid concentrator is filled with a transparent liquid. The liquid concentrator has at least one light receiver that allows sunlight to pass through the transparent liquid and a reflector that reflects the incident sunlight. After being reflected by the reflector in the liquid concentrator, the sunlight traveling from the transparent liquid to the light receiver undergoes total internal reflection. This prevents the sunlight from being reflected by the transparent liquid by the reflector and then refracted again by the light receiver, allowing more sunlight to be concentrated on the light utilization section of the light energy utilization device and improving the light concentration efficiency.

Description

[Technical field]

[0001] The present invention relates to a light energy conversion and utilization device. [Background technology]

[0002] With the reduction in cost and the increase in efficiency of solar power generation panels, the application of solar power generation systems is increasing. However, as the solar power generation systems are widely used, related problems arise, such as the increase in land cost, the cost of power plant maintenance (including cleaning dust and removing snow), and the difficulty of recovering solar power generation panels. Summary of the Invention

[0003] The main object of the present application is to provide a novel solar energy utilization device and a novel solar energy utilization structure.

[0004] In accordance with the above objective, one embodiment of the present application provides a solar energy utilization device, including: A light energy utilization device having a light energy utilization section that receives sunlight and converts it into usable light, and at least one liquid light collecting device.

[0005] The liquid light collecting device is filled with a transparent liquid, and has at least one light receiver that allows the sunlight to pass through the transparent liquid, and a reflector that reflects the incident sunlight. Here, the transparent liquid is in contact with the light receiver. In the liquid light collecting device, the sunlight traveling from the transparent liquid to the light receiver undergoes a total reflection phenomenon, and the sunlight is collected on the light energy utilization section of the light energy utilization device.

[0006] In one embodiment, the liquid light collecting device has a light collecting body, the light collecting body is made of a light transmitting material, and the light energy utilization part is located outside the light collecting body. In the liquid light collecting device, the sunlight is collected on the light collecting body so as to be incident on the light energy utilization part.

[0007] In one embodiment, the liquid light collecting device has a light collecting body, the light energy utilization part is a part of the liquid light collecting device, and an outer wall of the light energy utilization part is the light collecting body.

[0008] In one implementation, there is a structure between the reflector and the photoreceptor such that total internal reflection occurs when light is reflected from the reflector and then travels from the transparent liquid to the photoreceptor.

[0009] In one embodiment, the reflecting surface of at least a portion of the reflector forms an acute angle with the light receiving surface of the light receiver, the acute angle being ≦40°.

[0010] In one embodiment, the liquid light collector has a closed cavity, a cavity wall of the closed cavity includes the light receiver, reflector and collector, and at least a portion of the closed cavity is filled with the transparent liquid.

[0011] In one embodiment, the reflector is a flat plate, an arcuate plate or a bent plate.

[0012] In one embodiment, the light receiver and the reflector are both inclined flat plates, the light collector is located below the light receiver and the reflector, the upper ends of the light receiver and the reflector are connected to each other, and both ends of the light collector are connected to the lower ends of the light receiver and the reflector, respectively.

[0013] In one embodiment, the receiver is an arc-shaped plate, the collector is located at one axial end of the receiver, the reflector is a bent-surface plate, the other axial end of the receiver is connected to the reflector, the receiver is arranged at an angle, and the one end of the receiver connected to the collector is lower than the other end of the receiver.

[0014] In one embodiment, the liquid light collecting device includes a light guiding member, the light guiding member being disposed in the transparent liquid, which collects the sunlight onto the light energy utilization device.

[0015] In one embodiment, the liquid light collecting device includes at least one transparent hollow body, the transparent hollow body communicates with an enclosed structure or with the atmospheric environment, a partial wall of the transparent hollow body is bonded or integrally formed with the reflector to reflect the incident solar light, and a partial wall of the transparent hollow body is in contact with the transparent liquid to transmit the solar light or to perform a total reflection effect on the solar light.

[0016] In one embodiment, the partial wall of the transparent hollow body is in close contact with the light-guiding member or is integral with the light-guiding member, and condenses the sunlight onto the light energy utilization device by a reflection effect.

[0017] In one embodiment, there are at least two liquid light collecting devices, the liquid light collecting devices are distributed on the same side of the light energy utilization device and collect the sunlight on the light energy utilization parts on the same side of the light energy utilization device, or the liquid light collecting devices are distributed on different sides of the light energy utilization device and collect the sunlight on the light energy utilization parts on different sides of the light energy utilization device.

[0018] In one embodiment, the liquid light collecting device includes a first liquid light collecting device and a second liquid light collecting device. The light energy utilization portion is a first light energy utilization section and a second light energy utilization section that are spaced apart from each other. The first liquid light collecting device collects the sunlight into the first light energy utilization section. The second liquid light collecting device collects the sunlight into the second light energy utilization section.

[0019] In one embodiment, the first light energy utilization section is arranged facing upward, the second light energy utilization section is arranged facing downward, the first liquid light collecting device is positioned above the first light energy utilization section, the second liquid light collecting device is positioned below the second light energy utilization section, and the light receivers of the first liquid light collecting device and the second liquid light collecting device are arranged facing the same side.

[0020] In one embodiment, the light receivers of the first and second liquid light collectors are arranged vertically, and the reflector of the second liquid light collector includes a first reflector located on the rear side of the light receiver and a second reflector located below the light receiver, the second reflector being inclined rearward and downward from the lower end of the light receiver.

[0021] In one embodiment, the light receiving area of ​​the light receiver of the first liquid light collector is larger than the light receiving area of ​​the light receiver of the second liquid light collector.

[0022] In one embodiment, the interiors of at least two of the liquid light collecting devices are in communication with each other and communicate with the same sealed cavity, and the liquid light collecting devices guide the sunlight to the light energy utilization parts on the same or different sides of the light energy utilization device.

[0023] In one embodiment, two adjacent liquid light collectors are provided on the same side of the light energy utilization device along the horizontal direction, and the transparent liquids of the two adjacent liquid light collectors are in communication with each other to form one liquid light collector group. The light receivers of the two adjacent liquid light collectors are connected to each other, and the cross section of the connection portion has a V-shape, and each of the liquid light collector groups collects the sunlight to the same light energy utilization device.

[0024] In one embodiment, the light energy utilization unit includes a first light energy utilization unit and a second light energy utilization unit that are spaced apart from each other, and there are at least two liquid light collecting device groups, a first liquid light collecting device group and a second liquid light collecting device group. The first liquid light collecting device group collects the sunlight onto the first light energy utilization unit, and the second liquid light collecting device group collects the sunlight onto the second light energy utilization unit.

[0025] In one embodiment, the light energy utilization device is arranged vertically, the first liquid collector group and the second liquid collector group are distributed in an X-shape, and the upper ends of the first liquid collector group and the second liquid collector group surround an empty cavity that is open at the top.

[0026] In one embodiment, the upper end of the light energy utilization device extends into the empty cavity, and the upper ends of the first light energy utilization part and the second light energy utilization part are both partially located within the empty cavity, the opening of the empty cavity is covered with a transparent closing cover, forming the empty cavity into a second closed cavity, the second closed cavity is filled with the transparent liquid, the sunlight is transmitted through the transparent closing cover to the transparent liquid, and at least a part of the cavity wall of the empty cavity is a reflective surface, which concentrates the sunlight on the first light energy utilization part and the second light energy utilization part.

[0027] In one embodiment, the solar panel further includes an external reflector, which is disposed outside the entirety of the light energy utilization device and the liquid light collecting device, the external reflector has a reflective surface, and collects the sunlight onto the light energy utilization device and the liquid light collecting device, and the external reflector has an inner concave structure or a Fresnel lens reflective surface.

[0028] In one embodiment, the transparent liquid comprises water or a non-freezing transparent liquid.

[0029] In one embodiment, a bottom groove is further provided at the bottom of the liquid collecting device, which together with the bottom of the liquid collecting device forms a closed cavity, and the closed cavity is empty or is provided with a second liquid.

[0030] A solar light utilization device according to the above embodiment includes a light energy utilization device and at least one liquid light collector. The liquid light collector is filled with a transparent liquid. The liquid light collector has at least one light receiver that can transmit sunlight into the transparent liquid, and a reflector that reflects the incident sunlight. In the liquid light collector, the sunlight traveling from the transparent liquid to the light receiver forms a total reflection phenomenon, which prevents the sunlight from being reflected by the reflector into the transparent liquid and then refracted by the light receiver again, allowing more sunlight to be concentrated on the light energy utilization part of the light energy utilization device and improving the light collection efficiency. [Brief description of the drawings]

[0031] [Figure 1] 1 is a schematic perspective view of a solar energy utilization device according to a first embodiment of the present invention. [Diagram 2] FIG. 11 is a schematic perspective view of a solar energy utilization device according to a second embodiment of the present invention. [Diagram 3] FIG. 11 is a schematic cross-sectional view of a solar energy utilization device according to a third embodiment of the present invention. [Figure 4] FIG. 11 is a schematic cross-sectional view of a solar energy utilization device according to a fourth embodiment of the present invention. [Diagram 5] FIG. 11 is a schematic cross-sectional view of a solar energy utilization device according to a fifth embodiment of the present application. [Figure 6] FIG. 11 is a schematic cross-sectional view of a solar energy utilization device according to a sixth embodiment of the present invention. [Figure 7] FIG. 11 is a schematic cross-sectional view of a solar energy utilization device according to a seventh embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the drawings. Similar elements in different embodiments use the reference numerals of the relevant similar elements. In the following embodiments, many details are described to make the present application better understandable. However, those skilled in the art can easily recognize that some features may be omitted or replaced by other elements, materials, and methods in various situations. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being buried in excessive description, and those skilled in the art do not need to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the field.

[0033] Moreover, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method descriptions may be reordered or adjusted in a manner apparent to one of ordinary skill in the art. Thus, the various orders in the specification and accompanying figures are merely for purposes of clarifying particular examples, and are not intended to imply a required order unless expressly stated that a particular order must be followed.

[0034] In this specification, the numbers attached to the components, such as "first", "second", etc., are used only to distinguish the objects described and do not have any sequential or technical meaning. In addition, "connection" and "coupling" in this application include direct and indirect connection (coupling) unless otherwise specified.

[0035] This embodiment provides a solar energy utilization device, which receives sunlight and converts the received sunlight into energy, which can be converted into electrical energy, thermal energy and other forms of energy for people to use.

[0036] The solar energy utilization device shown in this embodiment includes a light energy utilization device and at least one liquid concentrator.

[0037] The light energy utilization device has a light energy utilization unit that can receive sunlight and convert it for utilization. In one embodiment, the light energy utilization unit can be one or more of a photovoltaic panel, a photothermal utilization device, a photovoltaic and thermal energy integrated utilization device, and a concentrated light energy utilization device. The photovoltaic panel generally refers to any device that directly converts light energy into electrical energy, including various semiconductor photovoltaic panels, photovoltaic thin films, quantum dot photoelectric conversion devices, etc. In other embodiments, the light energy utilization unit can be other types of solar energy utilization conversion structures.

[0038] The liquid light collector is filled with a transparent liquid, and sunlight can pass through the transparent liquid. The liquid light collector can have a housing that can enclose a sealed cavity, and the transparent liquid can be directly filled into the sealed cavity surrounded by the housing. The transparent liquid can be filled in a liquid container located in the sealed cavity. The liquid container can be surrounded by a separate wall, or can share a partial wall with the housing.

[0039] The liquid light collecting device has at least one light receiver capable of transmitting sunlight into a transparent liquid, and a reflector that reflects the incident sunlight. The light receiver is made of a material that transmits light and is in contact with the transparent liquid, and the light receiver is capable of storing the transparent liquid as a part of a liquid container.

[0040] This solar light utilization device is usually installed so that the light receiving surface of the light receiver faces the sun, and sunlight is projected from the light receiving surface onto the transparent liquid in the liquid light collector. The sunlight that enters the transparent liquid passes through the transparent liquid, and part of the sunlight enters the reflector and is reflected by the reflector into the transparent liquid. The structure of the liquid light collector is set as follows: Most of the sunlight that travels from the transparent liquid to the light receiver and is reflected into the transparent liquid continues to propagate within the liquid light collector by total reflection without emitting from the light receiving surface, forming a total reflection (or internal total reflection) phenomenon in which the light is finally collected in the light energy utilization section. In this application, the total reflection mainly comes from the light reflected by the reflector, but the light may be totally reflected throughout the entire optical path traveled within the liquid light collector and reused.

[0041] According to this embodiment, a transparent liquid is used as a light propagation medium, and at the same time, the contact between the transparent liquid and the light receiver and the difference in refractive index between the light receiver and the outside air are utilized to form a total reflection phenomenon, so that the sunlight that has passed through the light receiving surface is prevented from being reflected by the transparent liquid by the reflector and then refracted again from the light receiver, and more sunlight is concentrated on the light energy utilization section of the light energy utilization device, improving the light concentration efficiency. The light receiver in this embodiment plays the role of transmitting light and also plays the role of total reflection. Compared to the conventional liquid light collector, this liquid light collector can collect more sunlight on the light energy utilization section under the same light receiver conditions, and can increase the light concentration ratio.

[0042] Furthermore, this transparent liquid forms a heat transfer structure directly or indirectly with the light energy utilization section, and further plays a role in lowering the temperature or absorbing heat with respect to the light energy utilization section, thereby improving the light energy utilization rate.

[0043] Furthermore, in the process of forming the total reflection phenomenon, a structure is provided between the reflector and the photoreceptor such that the sunlight moving from the transparent liquid toward the photoreceptor forms a total reflection phenomenon. This total reflection phenomenon is realized, for example, by designing the shape and structure of the reflector and the photoreceptor and the angle between them.

[0044] When realizing the total reflection phenomenon, the reflector and the receiver can form a very small acute angle, for example, in one embodiment, at least a part of the reflecting surface of the reflector and the receiving surface of the receiver form an acute angle, which is ≦40°, so that the overall height of the liquid light collector can be reduced, which has better environmental adaptability and more applications. The reflecting surface of the reflector is the surface of the reflector that reflects the sunlight incident from the transparent liquid. The receiving surface of the receiver is the surface where the sunlight is incident on the receiver.

[0045] The liquid light collector generally includes a light collector. The liquid light collector collects all or most of the transmitted sunlight into the light collector. To receive the sunlight, the light energy utilization unit may be in close contact with or integral with the light collector, for example, the light energy utilization unit is located outside the light collector. The light collector is generally made of a light-transmitting material, and has one light-collecting surface, through which the sunlight enters the light collector.

[0046] Specifically, in one embodiment, the light collector is made of a light-transmitting material, and the light energy utilization unit is attached to the outside of the light collector, for example, the light energy utilization unit is fixedly connected to the outside of the light collector. In the liquid light collector, the sunlight is concentrated on the light collector so that it is incident on the light energy utilization unit.

[0047] In another embodiment, the liquid light collecting device has a light collector, the light energy utilization part is a part of the liquid light collecting device, and the outer wall (the surface that receives sunlight) of the light energy utilization part is the light collector, i.e., the outer surface of the light energy utilization part and the light collector are of an integral structure.

[0048] The light collector may be a part of the wall that contains the transparent liquid, and does not need to be in direct contact with the transparent liquid.

[0049] In one embodiment, the liquid light collector has a closed cavity, and the cavity walls of the closed cavity include a light receiver, a reflector, and a light collector, i.e., the closed cavity may be surrounded by the light receiver, the reflector, and the light collector, or may be surrounded by the light receiver, the reflector, the light collector, and another wall. At least a portion of the closed cavity is filled with a transparent liquid. Typically, in one embodiment, the transparent liquid fills the closed cavity.

[0050] In one embodiment, the reflector mainly serves to reflect sunlight, and it may be a flat plate, an arc plate, a curved plate, or other shapes that can meet the above-mentioned requirements for reflecting sunlight. In addition, in the modified embodiment based on the above concept, the reflector may be a single-sided reflector or a double-sided reflector, which is determined according to the specific embodiment.

[0051] When using this liquid light collecting device, light can be collected using one or more liquid light collecting devices. In contrast, this light energy utilization device may have one or more light energy utilization units, or one or more light energy utilization devices may be provided and used in combination with a liquid light collecting device. Alternatively, the light energy utilization device may be a light energy utilization device having a collector.

[0052] In one embodiment, in order to improve the light collecting effect, the liquid light collecting device further includes a light guiding member. The light guiding member is placed in the transparent liquid, which collects the sunlight to the light energy utilization device. The light guiding member guides the sunlight by using the method of reflection or refraction, and tends to collect the sunlight in the direction where the light energy utilization device is located.

[0053] Furthermore, in one embodiment, the liquid light collecting device includes at least one transparent hollow body. The transparent hollow body communicates with an enclosed structure or with the atmospheric environment. A partial wall of the transparent hollow body is bonded or integrated with a reflector to reflect incident solar light. The partial wall of the transparent hollow body is in contact with a transparent liquid to transmit solar light or to have a total reflection effect on solar light. The main role of the transparent hollow body is to improve the light guide to the light energy utilization device, thereby increasing the light collection ratio.

[0054] The light guide and the transparent hollow body may be used alone or in combination. In one embodiment, when the light guide and the transparent hollow body are used in combination, the partial wall of the transparent hollow body is in close contact with the light guide or is integral with the light guide, and reflects sunlight to the light energy utilization device.

[0055] In one embodiment, there are at least two liquid light collecting devices, which are distributed on the same side of the light energy utilization device to collect sunlight to the light energy utilization units on the same side of the light energy utilization device, or the liquid light collecting devices are distributed on different sides of the light energy utilization device to collect sunlight to the light energy utilization units on different sides of the light energy utilization device.

[0056] In one embodiment, the transparent liquid is selected to be a liquid that can transmit sunlight and form a total reflection phenomenon with the photoreceptor. For example, in one embodiment, the transparent liquid includes water or a non-freezing transparent liquid. The non-freezing transparent liquid can be, but is not limited to, a mixture of water and glycerin, a mixture of water and propylene glycol, a mixture of water and diethylene glycol, etc.

[0057] Based on the above inventive concept, the following will be further illustrated by several different embodiments to better display the invention.

[0058] Example 1 1, in the solar energy utilization device 1000 shown in Example 1, the light receiver 110 and the reflector 120 are both flat plates arranged at an incline. The light collector 130 is located below the light receiver 110 and the reflector 120. The upper ends of the light receiver 110 and the reflector 120 are connected to each other, and both ends of the light collector 130 are connected to the lower ends of the light receiver 110 and the reflector 120, respectively.

[0059] In this embodiment, the liquid light collector has a housing that encloses a closed cavity, which includes a receiver 110, a reflector 120, a collector 130, and other necessary walls. A transparent liquid 200 is filled within the closed cavity, for example, filling the entire closed cavity.

[0060] In other embodiments, the transparent liquid 200 may also be filled in a liquid container that is further integrally immersed in the closed cavity formed by the housing, which may share only a portion of its wall with the housing, such as the photoreceptor 110.

[0061] In FIG. 1, L indicates incident light. The arrows in FIG. 1 indicate the process in which the incident light is reflected by the reflector 120 and returned to the light receiver 110, and then totally reflected by the light receiver 110 to reach the light energy utilization device 300. In this embodiment, the light collection ratio is increased by fully utilizing the total reflection function of the transparent liquid 200 in the liquid light collecting device 100. That is, the light receiver 110 simultaneously has two functions: a function of transmitting light incident from the outside and a function of totally reflecting reflected light (reflected by the reflector 120) incident from the transparent liquid 200. A normal light collecting groove does not utilize the function of the total reflection between the light receiver 110 and the transparent liquid 200, but in order to utilize this function, it is necessary to consider the deflection range of sunlight and the refractive index of the transparent liquid 200 when designing the angle between the light receiver 110 and the reflector 120.

[0062] Since the present application utilizes the principle of total reflection, an angle between the reflecting surface of the reflector 120 of the present application and the receiving surface of the light receiver 110 may be an acute angle of 40° or less. This allows the height of the liquid light collector 100 to be lowered, improving its compatibility with the environment and allowing it to be used in more locations. This is difficult to achieve in existing light collector tanks, as they do not utilize the total reflection function of the light receiver 110 when filled with a transparent liquid.

[0063] In some embodiments, the liquid concentrator 100 can also be used to cool the light energy utilization device 300 to improve the efficiency of light energy utilization.

[0064] In this embodiment, the light receiver 110 and the reflector 120 are both flat plates. In other embodiments, the light receiver 110 and the reflector 120 may be arcuate plates, bent plates, or other shapes that meet the functional requirements. The light receiving surface may be a smooth surface, or a Fresnel lens in part or in whole. Similarly, the reflecting surface may be a smooth surface or a Fresnel lens reflecting surface. In one embodiment, the transparent liquid 200 can be used to form the Fresnel lens, which can significantly reduce costs.

[0065] In this embodiment, depending on the requirements of the embodiment and application, the collector 130 may be an independently existing transparent body, the light energy utilization device 300 may perform the function of the collector 130, the outer surface of the light energy utilization device 300 (e.g., the light energy utilization section 310) and the collector 130 may be designed as an integral structure, for example, the outer wall of the light energy utilization device 300 (e.g., the light energy utilization section 310) and the collector 130 may be integrated, or the outer wall of the light energy utilization device 300 (e.g., the light energy utilization section 310) may be used as the collector 130.

[0066] In this embodiment, the transparent liquid 200 may be purified water, antifreeze (a mixture of water and ethylene glycol), or other environmentally friendly transparent liquid 200 (a mixture of water and propylene glycol, diethylene glycol, glycerin). In this embodiment, the light energy utilization device 300 may be any light energy utilization form, including but not limited to a single-sided or double-sided photovoltaic power generation panel, a light heat utilization device, a photovoltaic and light heat combined utilization device, and a single-sided or double-sided concentrating light energy utilization device 300.

[0067] The liquid light collecting device 100 of this embodiment has the advantage that, compared to a normal side collecting mirror, sunlight is collected from the side surface onto the collector 130, so that the incident angle is good, the collection ratio is large, and the collection efficiency is high. In addition, a transparent liquid 200 can be used to improve the light energy utilization efficiency of the light energy utilization device 300 by connecting the device to a light energy utilization device 300 in a heat transfer manner and absorbing or utilizing the heat of the light energy utilization device 300. If necessary, an external heat cycle can be performed using the heat absorbed by the transparent liquid 200.

[0068] Example 2 In the second embodiment, another solar energy utilization device 1000 is provided. 2, in this embodiment, the photoreceptor 110 is an arcuate plate. The collector 130 is located at one end of the photoreceptor 110 in the axial direction. The reflector 120 is a bent plate, and the other end of the photoreceptor 110 in the axial direction is connected to the reflector 120. The photoreceptor 110 is disposed at an angle such that one end of the photoreceptor 110 connected to the collector 130 is lower than the other end of the photoreceptor 110.

[0069] The photoreceptor 110 is distributed in an arc shape along one direction that can expand the solar light receiving range in response to a certain angle of solar light deflection. The photoreceptor 110 is also arranged tilted in its axial direction, and the solar light receiving range is also expanded in the axial direction, so that the photoreceptor 110 of this embodiment has the ability to accommodate a certain deflection of solar light in both directions. For example, the tilt direction can accommodate the latitudinal deflection and north-south retrogression angle deflection of solar light, and the bending direction can accommodate the east-west deflection of solar light.

[0070] 2, in this embodiment, the reflector 120 is divided into three bent reflectors 120, including a first reflector 121, a second reflector 122, and a third reflector 123, and the first reflector 121 is disposed opposite the light collector 130, and the second reflector 122 and the third reflector 123 are integrally connected between the first reflector 121 and the light collector 130. The reflector 120, the light receiver 110, and the light collector 130 are sealed as a sealed cavity to form a housing (also considered as a liquid container containing the transparent liquid 200) of the liquid light collector 100, and the transparent liquid 200 is filled in the sealed cavity. Of course, in other embodiments, the housing can also include other walls other than the reflector 120, the light receiver 110, and the light collector 130 to surround the sealed cavity.

[0071] Example 3 The third embodiment provides another solar energy utilization device 1000, in particular, a method for using two or more liquid concentrators 100 in combination.

[0072] FIG. 3 is a cross-sectional view of a solar energy utilization device 1000. In this embodiment, at least two liquid light collecting devices 100 are provided. The at least two liquid light collecting devices 100 are connected to each other so as to communicate with each other as the same sealed cavity. A transparent liquid 200 is filled in the sealed cavity. The liquid light collecting devices 100 guide sunlight to light energy utilization units 310 on the same side or different sides of a light energy utilization device 300. Here, as shown in FIG. 3, the liquid light collecting devices 100 guide sunlight to the same side of the light energy utilization device 300, and, for example, collect sunlight to one light energy utilization unit 310 or collect sunlight to different light energy utilization units 310 on the same side.

[0073] 3, in one embodiment, two adjacent liquid light collectors 100 are arranged horizontally on the same side of the light energy utilization device 300, and the transparent liquid 200 of the two adjacent liquid light collectors 100 communicate with each other to form one group of liquid light collectors 100. The light receivers 110 of the two adjacent liquid light collectors 100 are connected to each other, and the cross section of the connection is V-shaped. Each group of liquid light collectors 100 collects sunlight to the same light energy utilization unit 310.

[0074] In this embodiment, the two liquid light collectors 100 may be arranged symmetrically (mirror image) or asymmetrically. The two liquid light collectors 100 partially overlap each other, can be connected to the light receivers 110, and are realized integrally with one continuous surface. The transparent liquids 200 of the two liquid light collectors 100 are mixed. Similarly, in other embodiments, the reflectors 120 arranged on the same side or different sides of the two liquid light collectors 100 may be connected.

[0075] In another embodiment, the two liquid light collecting devices 100 may be disposed on different sides of the light energy utilization device 300. In this case, the light energy utilization device 300 may have the ability to absorb light energy on both sides, such as a double-sided light energy utilization device 300. Of course, two light energy utilization devices 300 that absorb light energy on one side may be provided, and the two may be disposed so as to be separated from each other by the light energy utilization section 310, so as to receive sunlight on both sides.

[0076] Example 4 This Example 4 provides another embodiment of the solar energy utilization device 1000 in which a particularly transparent hollow body is added to the liquid concentrator 100 .

[0077] 4 is a cross-sectional view of a solar energy utilization device 1000. In this embodiment, the liquid collector 100 includes at least one transparent hollow body 140. The transparent hollow body 140 is a closed structure or communicates with the atmospheric environment, for example, the transparent hollow body 140 may be completely sealed and disposed within the housing of the liquid collector 100, or may have some openings communicating with the external atmospheric environment.

[0078] A partial wall 141 of the transparent hollow body 140 is bonded to or integral with the reflector 120, and reflects incident sunlight. A partial wall 142 of the transparent hollow body 140 contacts the transparent liquid 200 and transmits or totally reflects sunlight.

[0079] The main role of this transparent hollow body 140 is to better guide light to the light energy utilization device 300, thereby increasing the light concentration ratio. In addition, when this solar energy utilization device 1000 is used in cold regions, the transparent hollow body 140 can be pushed out in volume to accommodate the solidification and expansion of the transparent liquid 200.

[0080] Continuing to refer to Fig. 4, in one embodiment, the liquid light collecting device 100 includes a first liquid light collecting device 100a and a second liquid light collecting device 100b. The first liquid light collecting device 100a and the second liquid light collecting device 100b each include a corresponding transparent hollow body 140. The light energy utilization section 310 is divided into a first light energy utilization section and a second light energy utilization section that are disposed away from each other. The first liquid light collecting device 100a collects sunlight onto the first light energy utilization section, and the second liquid light collecting device 100b collects sunlight onto the second light energy utilization section.

[0081] 4, in one embodiment, the first light energy utilization unit is disposed facing upward, the second light energy utilization unit is disposed facing downward, the first liquid light collecting device 100a is disposed above the first light energy utilization unit, the second liquid light collecting device 100b is disposed below the second light energy utilization unit, and the light receivers 110 of the first liquid light collecting device 100a and the second liquid light collecting device 100b are disposed facing the same side. In another embodiment, the first liquid light collecting device 100a and the second liquid light collecting device 100b may be disposed horizontally on the left and right.

[0082] In the embodiment shown in FIG. 4, two liquid collecting devices 100 are shown, however, the transparent hollow body 140 structure as shown in this embodiment is also applicable to other embodiments having one or more liquid collecting devices 100.

[0083] Further, in one embodiment, referring to FIG. 4, the light receivers 110 of the first liquid light collector 100a and the second liquid light collector 100b are arranged in a vertical direction. The reflector 120 of the second liquid light collector 100b has a first reflector 121 located on the rear side of the light receiver 110 and a second reflector 122 located below the light receiver 110, and the second reflector 122 is arranged at an incline downward and rearward from the lower end of the light receiver 110. This design is clearly different from conventional light collectors in which the second reflector 122 is usually arranged below the lower end from the rear to the front (the incident direction of the sunlight is defined as the front in this application) to better collect the sunlight to the light energy utilization device 300. In this embodiment, since the total reflection principle is adopted, the light collection ratio can be further increased by arranging the second reflector 122 at an incline downward and rearward from the lower end of the light receiver 110.

[0084] 4, in two liquid light collecting devices 100 (first liquid light collecting device 100a and second liquid light collecting device 100b) stacked one on top of the other, each liquid light collecting device 100 constitutes a sealed cavity filled with a transparent liquid 200. A double-sided light energy utilization device 300 capable of absorbing light energy on both sides is sandwiched between the two liquid light collecting devices 100. The first liquid light collecting device 100a and the second liquid light collecting device 100b each include a corresponding transparent hollow body 140.

[0085] In one embodiment, since Fig. 4 is a cross-sectional view, the hollow rectangular and hollow triangular transparent hollow bodies 140 in Fig. 4 correspond to one rectangular sleeve and one triangular sleeve, respectively, in the three-dimensional structure. The transparent hollow bodies 140 may be filled with air or other gas, or may be vacuum.

[0086] In one embodiment, the bottom surface 141 of the upper transparent hollow body 140 overlaps with the bottom surface of the reflector 120, and the transparent hollow body 140 has a side wall 142b closer to the light energy utilization device 300 and a side wall 142a farther from the double-sided light energy utilization device 300. The side wall 142a farther from the double-sided light energy utilization device 300 mainly functions as a transmission wall, and the side wall 142b closer to the double-sided light energy utilization device 300 functions as a transmission wall or a total reflection wall for light of different incident angles.

[0087] A side concentrating solar device having only one liquid concentrating device 100 may also be provided with a transparent hollow body 140. The transparent hollow body 140 may be closed or open at both ends to the outside atmosphere.

[0088] The surface of the transparent hollow body 140 does not have to be flat. In other embodiments, the transparent hollow body 140 may be a pentagonal sleeve or a sleeve of other shapes. The transparent hollow body 140 is fixed in close contact with the reflector 120, so that it can be realized integrally in practice. Therefore, in another embodiment, the transparent hollow body 140 is integrated with the reflector 120 and realized in an integrated manner.

[0089] Furthermore, as shown in Fig. 4, the light receiving area of ​​the light receiver 110 of the first liquid light collector 100a is larger than the light receiving area of ​​the light receiver 110 of the second liquid light collector 100b. Specifically, in Fig. 4, C is the center of the side light collector solar energy device. The light energy utilization device 300 is not on the center line, and it is clear that the area of ​​the light receiver 110 located at the upper part is larger than the area of ​​the light receiver 110 located at the lower part. This is to accommodate the phenomenon that sunlight enters from obliquely above, and the light receiver 110 located at the upper part is more likely to receive more sunlight. Although Fig. 4 shows an asymmetric embodiment, in other embodiments, the two liquid light collectors 100 may be structured symmetrically in the vertical direction.

[0090] Furthermore, in one embodiment, the two liquid light collectors 100 and the double-sided light energy utilization device 300 can be modularized, which can facilitate transportation, installation, and maintenance, and reduce waste when recycling.

[0091] Example 5 In the fifth embodiment, another solar energy utilization device 1000, in particular, a method of using a light guide member to enhance the light collection effect, is provided.

[0092] 5 is a cross-sectional view of a solar energy utilization device 1000. The liquid light collecting device 100 is disposed in a transparent liquid 200 and includes a light guiding member 150 that collects sunlight toward a light energy utilization device 300. This light guiding member 150 can collect sunlight by a reflection or refraction effect.

[0093] In one embodiment, the light guiding member 150 reflects sunlight. The light guiding member 150 is disposed at an angle in the transparent liquid 200 of the liquid light collecting device 100, and the end of the light guiding member 150 farther from the light energy utilization device 300 is higher than the end of the light guiding member 150 closer to the light energy utilization device 300, making it easier to collect sunlight in the direction of the light energy utilization device 300.

[0094] In one embodiment, referring to Fig. 5, the liquid light collecting device 100 includes a first liquid light collecting device 100a and a second liquid light collecting device 100b. The light energy utilization section 310 is divided into a first light energy utilization section and a second light energy utilization section that are arranged away from each other. The light energy utilization device 300 is arranged vertically, and the first liquid light collecting device 100a and the second liquid light collecting device 100b are arranged on both the left and right sides of the light energy utilization device 300. The first liquid light collecting device 100a collects sunlight on the first light energy utilization section, and the second liquid light collecting device 100b collects sunlight on the second light energy utilization section, and the light receivers 110 of the first liquid light collecting device 100a and the second liquid light collecting device 100b are arranged facing upward to better receive sunlight incident from above.

[0095] 5 shows two liquid light collectors 100. However, the light guide member 150 can be applied to a scheme having one or more liquid light collectors 100, and is not limited to the structure shown in FIG.

[0096] Specifically, referring to Fig. 5, the first liquid light collecting device 100a and the second liquid light collecting device 100b are arranged symmetrically (mirror image) in parallel, and the light energy utilization device 300 is arranged on the center line (C in Fig. 5) of the solar energy utilization device 1000. Of course, in other embodiments, they may be arranged asymmetrically.

[0097] The first and second liquid light collecting devices 100a and 100b are each provided with one double-sided reflective light guiding member 150 (for example, a double-sided reflective light guiding plate).

[0098] Furthermore, in one embodiment, the light receiver 110 of the first and second liquid collectors 100a, 100b can be realized as a single large transparent panel, and the collectors 130 and reflectors 120 of the first and second liquid collectors 100a, 100b are sealed and connected to this light receiver 110 to form a single large sealed cavity, and the double-sided light energy utilization device 300 is immersed in the transparent liquid 200 of this large sealed cavity.

[0099] 5, in one embodiment, the two reflectors 120 are each configured with two plates 121, 122 that form a folded surface shape. Due to the structural features of this embodiment, the two plates 121 located at the bottom can be realized with a single larger plate. In this embodiment, this larger plate 121 may have a Fresnel lens reflecting surface or may have another reflecting surface.

[0100] To further reduce reflection loss, in one embodiment, the light-guiding member 150 employs a double-sided reflective light-guiding plate, which allows this embodiment to obtain a higher concentration ratio at a lower height.

[0101] This example shows a highly integrated embodiment in which two liquid light concentrating devices 100 form a large closed cavity filled with a transparent liquid 200, and a double-sided light energy utilization device 300 is immersed in the liquid.

[0102] Example 6 The sixth embodiment provides another solar energy utilization device 1000 which is a further improvement over the fifth embodiment.

[0103] 6 is a cross-sectional view of a solar energy utilization device 1000. In this embodiment, the liquid light collecting device 100 further includes at least one transparent hollow body 140 in addition to a light guiding member 150. The transparent hollow body 140 has an airtight structure or is connected to the atmospheric environment. A partial wall body 141 of the transparent hollow body 140 is in close contact with or integral with the reflector 120 so as to reflect incident solar light, and a partial wall body 142 of the transparent hollow body 140 is in close contact with or integral with the light guiding member 150, and collects solar light toward the light energy utilization device 300 by a reflection effect.

[0104] In this embodiment, the transparent hollow body 140 is used in combination with a light-guiding member 150 (for example, a double-sided reflective light-guiding plate). When these are used in combination, the light-guiding member 150 is disposed on the upper surface of the transparent hollow body 140, as shown in FIG.

[0105] In one embodiment, since FIG. 6 is a cross-sectional view, the hollow pentagonal transparent hollow body 140 in FIG. 6 corresponds to a pentagonal sleeve in the three-dimensional structure.

[0106] This embodiment differs from embodiment 5 in the following respects: A bottom groove 400 is further provided at the bottom of the liquid light collecting device 100, which forms a closed cavity with the bottom of the liquid light collecting device 100. A second liquid 410 is filled in this closed cavity, and the liquid light collecting device 100 and the light energy utilization device 300 are immersed as a whole in the second liquid 410. The second liquid 410 may be the same as or different from the transparent liquid 200 in the liquid light collecting device 100, and does not necessarily have to be transparent. Also, the sealed cavity does not need to be filled with the second liquid, and is a sealed or empty cavity structure that communicates with the external environment.

[0107] Specifically, referring to FIG. 6 , in one embodiment, two liquid collectors 100 are disposed in a large closed cavity of a bottom groove 400, and the liquid collectors 100 and the double-sided light energy utilization device 300 are both immersed in a second liquid 410.

[0108] In this embodiment, the Fresnel lens in Example 5 is replaced with the transparent hollow body 140, which is easy to process. Meanwhile, in other embodiments, the transparent hollow body 140 may be used simultaneously with the Fresnel lens 121 of the reflector 120 (see FIG. 5) to further increase the concentration ratio.

[0109] This embodiment also provides high flexibility in implementation, as the liquid light collector 100 may be disposed on only a portion of the surface within the closed cavity, or a portion of its surface (e.g., the photoreceptor 110) may coincide with a portion of the surface of the closed cavity.

[0110] Example 7 The seventh embodiment provides another solar energy utilization device 1000 which is a further improvement over the third embodiment.

[0111] 7 is a cross-sectional view of a solar energy utilization device 1000. In this embodiment, the light energy utilization section 310 is divided into a first light energy utilization section 310a and a second light energy utilization section 310b that are disposed away from each other. The liquid light collecting device 100 group includes a first liquid light collecting device group and a second liquid light collecting device group. The first liquid light collecting device group collects sunlight onto the first light energy utilization section 310a, and the second liquid light collecting device group collects sunlight onto the second light energy utilization section 310b.

[0112] In this embodiment, two side concentrating solar energy devices in the third embodiment are arranged back to back and share the same light energy utilization device 300 .

[0113] Furthermore, in one embodiment, the light energy utilization devices 300 are arranged vertically, and the first liquid light collector group and the second liquid light collector group are distributed in an X-shape (a four-pointed star-shaped band as shown in the cross-sectional view of FIG. 7). Of the four liquid light collectors 100 in this embodiment, the two liquid light collectors 100 located on the upper side may be the same as or different from the two liquid light collectors 100 located on the lower side.

[0114] Furthermore, in order to utilize light energy even more, in one embodiment, the upper ends of the first and second liquid light collecting device groups are surrounded by an empty cavity that opens upward. The upper end of the light energy utilization device 300 protrudes into the empty cavity, and both the upper ends of the first light energy utilization section 310a and the second light energy utilization section 310b are partially located within the empty cavity. At least a part of the cavity wall of the empty cavity is a reflective surface that concentrates sunlight toward the first light energy utilization section 310a and the second light energy utilization section 310b.

[0115] Furthermore, in one embodiment, the opening of the empty cavity is covered with a transparent closing cover 500, and the empty cavity forms a second closed cavity, which is filled with a transparent liquid 200, and the sunlight is transmitted from the transparent closing cover 500 to the transparent liquid 200. The transparent closing cover 500 may be flat, folded, curved, or other shapes.

[0116] In order to maximize the utilization of the surrounding light energy, in one embodiment, referring to FIG. 7, the light energy utilization device 300 and the liquid collecting device 100 are further provided with an external reflecting device 600 integrally arranged therewith, the external reflecting device 600 having a reflecting surface 610 that collects sunlight onto the light energy utilization device 300 and the liquid collecting device 100.

[0117] In one embodiment, the external reflector 600 has an inner concave structure in which the light energy utilization device 300 and the liquid light collector 100 are disposed, and the reflector surface 610 is located on the inner wall of the inner concave structure.

[0118] Specifically, see Fig. 7, the reflecting surface of the external reflecting device 600 may be a normal mirror surface or a Fresnel lens reflecting surface. The external reflecting device 600 is disposed at the bottom or other position such as the side of the entire light energy utilization device 300 and the liquid light collecting device 100. The external reflecting device 600 may have any shape.

[0119] 7, the solar energy utilization device 1000 of this embodiment can realize light collection in almost 360° directions. This solar energy utilization device 1000 can be installed in either the north-south direction or the east-west direction, which can greatly expand the range of application of this embodiment.

[0120] The present application has been described above using specific examples, but these examples are only used to facilitate understanding of the present application and are not used to limit the present application. Those skilled in the art can modify the above specific embodiments based on the concept of the present application.

Claims

1. a light energy utilization device and at least one liquid light concentrating device; The light energy utilization device has a light energy utilization section that receives sunlight and converts and utilizes it, the light energy utilization device is arranged in a vertical direction, and the light energy utilization section is divided into a first light energy utilization section and a second light energy utilization section that are spaced apart from each other, a first liquid light collecting device and a second liquid light collecting device are disposed on the left and right sides of the light energy utilization device, respectively; the first liquid light collecting device and the second liquid light collecting device each have at least one light receiving body that allows the sunlight to pass through a transparent liquid, and a reflector that reflects the incident sunlight, the photoreceptor and the reflector are formed as walls of a sealed cavity filled with the transparent liquid; Here, the transparent liquid comes into contact with the light receiver, and the sunlight traveling from the transparent liquid toward the light receiver forms a total reflection phenomenon in the liquid light collecting device, the first liquid light collecting device collects the sunlight onto a first light energy utilization section, and the second liquid light collecting device collects the sunlight onto a second light energy utilization section, The liquid light collecting device includes at least one transparent hollow body, the transparent hollow body is in communication with an enclosed structure or with an atmospheric environment, and a partial wall of the transparent hollow body is bonded to or integrally formed with the reflector to reflect the incident solar light; The partial wall of the transparent hollow body is in contact with the transparent liquid and transmits the sunlight or performs a total reflection effect on the sunlight. A solar energy utilization device.

2. At least a part of the reflecting surface of the reflector forms an acute angle with the light receiving surface of the light receiving body, and the acute angle is ≦40°; 2. A solar energy utilization device according to claim 1.

3. The reflector is a flat plate, an arcuate plate, or a bent plate.

2. A solar energy utilization device according to claim 1.

4. the partial wall body of the transparent hollow body is in close contact with the light guide member or is integral with the light guide member, and focuses the sunlight onto the light energy utilization device by a reflection effect; The liquid light collecting device includes the light guiding member, and the light guiding member is disposed in the transparent liquid, which is for collecting the sunlight to the light energy utilization device, 2. A solar energy utilization device according to claim 1.

5. Further comprising an external reflector; The external reflecting device is provided outside the entirety of the light energy utilization device and the liquid light collecting device, The external reflector has a reflective surface and focuses the sunlight onto the light energy utilization device and the liquid light collector, and the external reflector has an inner concave structure or a Fresnel lens reflective surface. A solar energy utilization device according to any one of claims 1 to 3.

6. A bottom groove is further provided on the bottom of the liquid collecting device, which forms a closed cavity together with the bottom of the liquid collecting device, and the closed cavity is empty or filled with a second liquid; A solar energy utilization device according to any one of claims 1 to 3.

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