CN216794908U - A spectroscopic solar photovoltaic photothermal utilization device - Google Patents

Abstract

The utility model relates to a spectroscopic solar photovoltaic photothermal utilization device, comprising a solar cell module, a heat absorber, a bracket and a sun tracking mechanism, wherein the solar cell module is mounted on the bracket, and the heat absorber is arranged on the solar cell module On one side, the surface layer of the solar cell module is provided with special glass, and the sun tracking mechanism is used to adjust the illumination angle of the solar cell module, so that the reflected light of the solar cell module always points to the heat absorber. Compared with the prior art, the utility model has the advantages of realizing the comprehensive utilization of photovoltaic and photothermal decoupling, and improving the comprehensive utilization efficiency of solar energy.

Description

A spectroscopic solar photovoltaic photothermal utilization device

technical field

The utility model relates to the field of solar cell modules, in particular to a spectroscopic solar photovoltaic photothermal utilization device.

Background technique

Solar energy is one of the most widely used renewable energy sources at present. There are two main ways to utilize solar energy at present, one is photovoltaic utilization, the other is photothermal utilization, and the third is photovoltaic photothermal comprehensive utilization.

Solar photovoltaic utilization refers to a solar energy utilization method that directly converts solar energy into electrical energy through the photovoltaic effect. At present, the average utilization efficiency of photovoltaic power generation projects is about 10% to 23%, and the efficiency of commercial monocrystalline silicon photovoltaic cells has not increased by 1% in the past 20 years. It can be seen that the current photovoltaic power generation technology has bottlenecks, low power generation efficiency and high cost.

Solar thermal utilization is the use of specific equipment to convert solar radiation energy into heat energy through focusing, direct absorption or other methods to meet different needs, such as domestic solar water heaters, commercial solar water heating systems, these methods of utilizing solar thermal utilization are now available. It is very mature and has the characteristics of low cost, wide popularity and high degree of industrialization; solar thermal power generation technology is mainly divided into tower type, linear Fresnel type, trough type and dish type solar thermal power generation technology according to different concentrating methods. Up to now, the solar thermal utilization efficiency is about 50%. On the whole, the solar thermal technology alone has nearly 50% energy loss for solar energy utilization, so the solar thermal utilization technology is also at a relatively low level of effective utilization.

The comprehensive utilization of solar photovoltaic light and heat can effectively improve the utilization efficiency of solar energy. However, there is no device that comprehensively utilizes solar photovoltaic light and heat has been commercialized on a large scale. The main reason is that the heat absorbing element is close to the back of the solar cell. are conflicting. The photothermal effect will increase the temperature of the solar cell, and the solar cell will reduce the power generation efficiency due to the high temperature, or even be damaged.

Utility model content

The purpose of the present utility model is to provide a light-splitting solar photovoltaic photothermal utilization device in order to overcome the above-mentioned defects of the prior art, so as to realize the efficient comprehensive utilization of photovoltaic and photothermal decoupling.

The purpose of the present utility model can be achieved through the following technical solutions:

A spectroscopic solar photovoltaic photothermal utilization device includes a solar cell module, a heat absorber, a bracket and a sun tracking mechanism, the solar cell module is mounted on the bracket, and the heat absorber is arranged on one side of the solar cell module, so The surface layer of the solar cell module is provided with special glass, which is used to transmit visible light while reflecting heat rays, and the sun tracking mechanism is used to adjust the angle of the solar cell module so that the reflected light of the solar cell module always points to the heat absorber.

Further, the wavelength band of heat rays reflected by the special glass is 700-1100 nm, and the wavelength band of visible light that penetrates is 400-700 nm.

Further, the special glass is a flat mirror, a grooved curved mirror or a dish curved mirror.

Further, the solar cell module includes a first EVA sheet, a battery sheet, a second EVA sheet and a back sheet arranged in sequence, and the special glass covers the first EVA sheet.

Further, the periphery of the solar cell module is encapsulated by a frame.

Further, it includes a plurality of solar cell modules and a common support, the solar cell modules are arranged side by side on the common support, and the two ends of each solar cell module are rotated to connect the support, and each solar cell module is connected with an independent For the sun tracking mechanism, the heat absorber is arranged in the upper center of all solar cell modules.

Further, a plurality of solar cell modules are included, and each solar cell module has an independent support and a sun tracking mechanism.

Compared with the prior art, the utility model has the following beneficial effects:

1. The utility model realizes the efficient decoupling utilization of photovoltaic and photothermal by arranging special glass on the solar panel. The visible light used for photovoltaic power generation passes through the special glass to realize battery operation, and the heat rays used for photothermal utilization are reflected. Collected in the heat absorption device, heat and electricity are used separately in a system without affecting each other. When photovoltaic power generation needs to be performed independently, it is only necessary to turn off the sun tracking device and stop collecting heat, and the operation and use are flexible.

2. The new technology of efficient and comprehensive utilization of photovoltaic light and heat proposed by this utility model is based on the spectrum utilization technology, and the photovoltaic cell and the heat-absorbing element are designed separately, which not only solves the problem of coupled photovoltaic light under the condition of unbalanced thermal and electrical loads of users. The bottleneck problem of over-temperature damage of thermal components also ensures the efficient and comprehensive utilization of solar energy by photovoltaic light and heat. In short, the utility model has important academic significance and engineering application value.

Description of drawings

FIG. 1 is a schematic three-dimensional structure diagram of the first embodiment.

FIG. 2 is a schematic front view of the structure of the first embodiment.

FIG. 3 is a schematic structural diagram of a solar cell module.

FIG. 4 is a schematic diagram of the three-dimensional structure of the second embodiment.

Reference numerals: 1, solar cell module, 11, first EVA sheet, 12, battery sheet, 13, second EVA sheet, 14, back sheet, 15, frame, 2, heat absorber, 3, bracket, 4, Special glass.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

Example 1

As shown in FIG. 1 and FIG. 2 , the embodiment provides a spectroscopic solar photovoltaic photothermal utilization device, which includes a solar cell module 1 , a heat absorber 2 , a bracket 3 and a sun tracking mechanism. The solar cell module 1 includes at least one solar cell module 1 , and six elongated solar cell modules 1 are used in this embodiment. Both ends of all solar cell modules 1 are rotatably connected to a common bracket 3, and all solar cell modules 1 are arranged side by side. The heat absorber 2 is provided in the upper center of all the solar cell modules 1 . Each solar cell module 1 is connected with an independent sun tracking mechanism, and the sun tracking mechanism is used to adjust the angle of the solar cell module 1 so that the reflected light of the solar cell module 1 always points to the heat absorber 2 .

As shown in FIG. 3 , the solar cell module 1 includes a first EVA sheet 11 , a battery sheet 12 , a second EVA sheet 13 and a (TPT) back sheet 14 arranged in sequence. The first EVA sheet 11 is covered with special glass 16 . The special glass 16 is a kind of coated glass, which can transmit visible light efficiently and reflect heat rays efficiently, and covers the top of the solar cell module 1 as a reflector. The special glass 16 may be a flat mirror, a grooved curved mirror or a dish curved mirror, and a flat mirror is preferred in this embodiment. The wavelength band of heat rays reflected by special glass is 700-1100nm, and the wavelength band of visible light that penetrates is 400-700nm. The visible light in the 400-700nm band passes through the special glass 16 and is projected on the solar photovoltaic panel, generating electricity through the photovoltaic effect; while the 700-1100nm heat ray band light is reflected and concentrated by the special glass 16 and irradiated on the heat absorber 2 to convert the light energy. It can be converted into heat energy, directly or indirectly used to generate electricity, so as to achieve comprehensive and efficient utilization of photovoltaic light and heat.

The sun tracking mechanism in this embodiment includes sensors, controllers, drivers, etc., through the collection and analysis of the light intensity, to ensure that the reflected light of the special glass 16 on the solar cell module 1 always points to the heat absorber 2 . Its control algorithms are all existing mature technologies, so no further development will be carried out.

Through the above structure, this embodiment realizes: 1. The spectral utilization of solar radiation improves the comprehensive utilization efficiency of solar energy; 2. The solar cell module is decoupled from the heat absorber, and the heat and electricity use do not affect each other, eliminating the need for It solves the traditional thermoelectric imbalance problem due to the influence of photothermal utilization on the temperature of solar cells, and provides a solid technical foundation for the application of solar photovoltaic photothermal utilization technology to engineering applications. 3. When the user does not need heat or heat storage, the heat collection can be stopped by releasing the sun tracking, and the operation is flexible.

Embodiment 2

As shown in FIG. 4 , the embodiment provides a spectroscopic solar photovoltaic photothermal utilization device, which includes a solar cell module 1 , a heat absorber 2 , a bracket 3 and a sun tracking mechanism. The solar cell module 1 includes at least one, and four solar cell modules 1 are used in this embodiment. Each solar cell module has an independent support 3 and a sun tracking mechanism. The heat absorber 2 is provided on one side of all the solar cell modules 1 . The sun tracking mechanism is used to adjust the angle of the solar cell module 1 , that is, the rotation angle of the solar cell module 1 , so that the reflected light of the solar cell module 1 always points to the heat absorber 2 . In this embodiment, the heat absorber 2 is an absorption tower device.

The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims. .

Claims (6)

1. A spectroscopic solar photovoltaic photothermal utilization device, characterized in that it comprises a solar cell module (1), a heat absorber (2), a bracket (3) and a sun tracking mechanism, wherein the solar cell module (1) is installed On the bracket (3), the heat absorber (2) is arranged on one side of the solar cell module (1), and the surface layer of the solar cell module (1) is provided with a special glass (16) for transmitting visible light and simultaneously Reflecting heat rays, the sun tracking mechanism is used to adjust the angle of the solar cell module (1) so that the reflected light of the solar cell module (1) always points to the heat absorber (2), and the heat reflected by the special glass (16) The wavelength band of rays is 700-1100nm, and the wavelength band of visible light that penetrates is 400-700nm. 2 . The spectroscopic solar photovoltaic photothermal utilization device according to claim 1 , wherein the special glass ( 16 ) is a plane mirror, a groove-type curved mirror or a dish-type curved mirror. 3 . 3. A spectroscopic solar photovoltaic photothermal utilization device according to claim 1, wherein the solar cell module (1) comprises a first EVA sheet (11), a cell (12), The second EVA sheet (13) and the back sheet (14), the special glass (16) covers the first EVA sheet (11). 4 . The spectroscopic solar photovoltaic photothermal utilization device according to claim 3 , wherein the periphery of the solar cell module ( 1 ) is encapsulated by a frame ( 15 ). 5 . 5. A spectroscopic solar photovoltaic photothermal utilization device according to claim 1, characterized in that, comprising a plurality of solar cell modules (1) and a shared support (3), the solar cell modules (1) are arranged side by side on a common support (3), and both ends of each solar cell module (1) are connected to the support (3), each solar cell module (1) is equipped with an independent sun tracking mechanism, the heat absorber (2) Set in the upper center of all solar cell modules (1). 6. A spectroscopic solar photovoltaic photothermal utilization device according to claim 1, characterized in that it comprises a plurality of solar cell modules (1), each solar cell module (1) having an independent support (3) and sun tracking agency.

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