CN115473490A

CN115473490A - Composite solar panel

Info

Publication number: CN115473490A
Application number: CN202211119668.9A
Authority: CN
Inventors: 徐钰凯; 李为; 陈健; 张彤; 刘显华; 谢松华
Original assignee: Beijing Hengtong Intelligent Technology Co ltd
Current assignee: Beijing Hengtong Intelligent Technology Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2022-12-13

Abstract

The invention belongs to the technical field of solar energy utilization and discloses a composite solar panel. The composite solar panel comprises a photovoltaic part, a heat absorbing part, an encapsulation groove and a photo-thermal tube, wherein the heat absorbing part is arranged on the lower surface of the photovoltaic part; the packaging grooves are arranged on the lower surface of the heat absorbing piece, are parallel to each other and are arranged at intervals, and phase variants are arranged in the packaging grooves; the photo-thermal tube is positioned between the adjacent packaging grooves, the photo-thermal tube is bonded on the lower surface of the heat absorbing piece, and a heat conducting layer is filled in a gap between the photo-thermal tube and the packaging grooves. According to the composite solar panel provided by the invention, when sunlight irradiates the composite solar panel, the photovoltaic part absorbs part of solar energy and converts the solar energy into electric energy, the photothermal tube absorbs part of solar energy and heats liquid in the photothermal tube to a preset temperature, the packaging groove and the photothermal tube form a micro heat exchanger structure, and when the temperature of the liquid in the photothermal tube is increased to the preset temperature, the phase change body is converted from a solid state to a liquid state to absorb heat, so that the utilization rate of the solar energy is effectively improved.

Description

Composite solar panel

Technical Field

The invention relates to the technical field of solar energy utilization, in particular to a composite solar panel.

Background

Solar energy is a novel clean energy source, is inexhaustible, is popular and popularized in China and even the world, and has wide application range due to the convenience of power generation and charging. At present, the technologies of solar photovoltaic panel power generation, solar hot plate hot water, phase change material heat storage and the like are widely applied.

In the field of solar power generation, only clean electric power can be provided singly, hot water supply cannot be provided directly, and once heating and heat supply requirements and living hot water requirements exist, heating can be realized only through electric power conversion; in the field of solar photo-thermal tube application, solar energy can be singly converted into heat energy such as hot water and the like, and a clean power supply cannot be provided; in the field of phase-change energy storage heating, most of heat sources of a phase-change energy storage heating system come from an electric boiler, so that the system efficiency is low (the electric boiler has low heat efficiency, and most of loss is generated when solar power generation is converted and then supplied to the electric boiler). The comprehensive energy utilization multi-energy complementary system has the advantages that the energy utilization efficiency and the system integration are improved, and the problems are well solved.

Disclosure of Invention

The invention aims to provide a composite solar panel, aiming at improving the utilization rate of solar energy.

In order to achieve the purpose, the invention adopts the following technical scheme:

a composite solar panel, comprising:

a photovoltaic member;

the heat absorbing piece is arranged on the lower surface of the photovoltaic piece;

the packaging grooves are arranged on the lower surface of the heat absorbing piece, are parallel to each other and are arranged at intervals, and phase change bodies are arranged in the packaging grooves;

and the light and heat pipes are positioned between the adjacent packaging grooves, the light and heat pipes are bonded to the lower surface of the heat absorbing piece, and a heat conducting layer is filled in a gap between each light and heat pipe and each packaging groove.

Optionally, an insulating layer is disposed between the photovoltaic member and the heat sink member.

Optionally, the insulating layer is a TPT insulating layer.

Optionally, the upper surface of the photovoltaic member is provided with a transparent panel.

Optionally, the photovoltaic element and the transparent panel are bonded through an EVA adhesive film.

Optionally, the light and heat pipe is arranged tangentially to the outer wall of the packaging groove.

Optionally, a heat collecting back plate is arranged at one end, away from the photovoltaic part, of the packaging groove.

Optionally, all the light and heat pipes are arranged tangentially to the heat collecting back plate.

Optionally, the longitudinal section of the packaging groove is square.

Optionally, the periphery of the photovoltaic part is provided with an aluminum frame.

The invention has the beneficial effects that: the invention provides a composite solar panel, which comprises a photovoltaic part, a photothermal pipe and a packaging groove, wherein a phase change body is arranged in the packaging groove, when sunlight irradiates the composite solar panel, the photovoltaic part absorbs part of solar energy and converts the solar energy into electric energy, the photothermal pipe absorbs part of the solar energy and heats liquid in the photothermal pipe to a preset temperature, the phase change body and the photothermal pipe form a micro heat exchanger structure, when the temperature of the liquid in the photothermal pipe is increased to the preset temperature, the phase change body is converted from a solid state to a liquid state to absorb heat, and when the temperature of the liquid in the photothermal pipe is lower than the preset temperature, the phase change body is converted from the liquid state to the solid state to release heat. The composite solar panel improves the utilization rate of solar energy, and can be widely applied to the field of agricultural light complementation, the field of fishing light complementation and the field of rural power county photovoltaic.

Drawings

Fig. 1 is a schematic structural diagram of a composite solar panel according to an embodiment of the present invention.

In the figure:

100. a photovoltaic member; 200. a heat absorbing member; 300. a packaging groove; 400. a phase variant; 500. a light and heat pipe; 600. a heat conductive layer; 700. an insulating layer; 800. a transparent panel; 900. a heat collection backplate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1, the present embodiment provides a composite solar panel, which includes a photovoltaic element 100, a heat absorbing element 200, an encapsulation groove 300, and a photothermal tube 500, wherein the heat absorbing element 200 is disposed on a lower surface of the photovoltaic element 100; the plurality of packaging grooves 300 are arranged on the lower surface of the heat absorbing member 200, the plurality of packaging grooves 300 are mutually parallel and are arranged at intervals, and the phase change body 400 is arranged in each packaging groove 300; the photo-thermal tube 500 is located between the adjacent package slots 300, the photo-thermal tube 500 is bonded to the lower surface of the heat sink 200, and the heat conduction layer 600 is filled in the gap between the photo-thermal tube 500 and the package slots 300.

The invention provides a composite solar panel, which comprises a photovoltaic part 100, a photo-thermal pipe 500 and a packaging groove 300, wherein a phase change body 400 is arranged in the packaging groove 300, when sunlight irradiates the composite solar panel, the photovoltaic part 100 absorbs part of solar energy and converts the solar energy into electric energy, the photo-thermal pipe 500 absorbs part of the solar energy and heats liquid in the photo-thermal pipe 500 to a preset temperature, the packaging groove 300 and the photo-thermal pipe 500 form a micro heat exchanger structure, when the temperature of the liquid in the photo-thermal pipe 500 is increased to the preset temperature, the phase change body 400 is converted from a solid state to a liquid state to absorb heat, and when the temperature of the liquid in the photo-thermal pipe 500 is lower than the preset temperature, the phase change body 400 is converted from the liquid state to the solid state to release heat. The composite solar panel improves the utilization rate of solar energy, and can be widely applied to the field of agricultural light complementation, the field of fishing light complementation and the field of rural power photovoltaic of the whole county of farmers.

For example, in practical application, the photovoltaic device 100 can absorb 5% to 18% of solar energy, and after the solar energy is converted into electric energy, the electric energy is subjected to grid connection and consumption through the combiner box or enters a chemical battery energy storage system; the light and heat pipe 500 can absorb 10% -25% of solar energy, after the solar energy is absorbed by the light and heat pipe 500, the liquid in the light and heat pipe 500 is heated to about 60 ℃, and the liquid is supplied to a digestion end for hot water heating or domestic hot water; the phase change body 400 and the photo-thermal tube 500 are arranged at intervals, when the liquid in the photo-thermal tube 500 is heated to above 60 ℃, the phase change body 400 is changed from a solid state to a liquid state to absorb redundant heat to realize energy storage, when the temperature of the liquid in the photo-thermal tube 500 is lower than 55 ℃, namely insufficient illumination is caused, the phase change body 400 is changed from the liquid state to the solid state to release heat, the liquid in the photo-thermal tube 500 is heated, and hot water can be provided for the tail end for a plurality of times.

Optionally, an insulating layer 700 is disposed between the photovoltaic element 100 and the heat absorbing element 200, and the insulating layer 700 has a better protection effect. Illustratively, the insulation layer 700 may be a TPT insulation layer. The TPT insulating layer can be a TPT polyvinyl fluoride composite film, the TPT insulating layer is generally in a three-layer structure, the outer protective layer is a PVF layer and has good environmental erosion resistance, the middle layer is a PET layer and has good insulating property, and the inner layer is a PVF layer and can improve the bonding property.

Specifically, the upper and lower surfaces of the insulating layer 700 are bonded to the photovoltaic member 100 and the heat absorbing member 200 through EVA films, the adhesive force of the EVA films is not affected by humidity and water-absorbing films, which effectively improves the bonding strength.

Further, the upper surface of the photovoltaic device 100 is provided with a transparent panel 800, and the transparent panel 800 may be a tempered glass plate. In other embodiments, the transparent panel 800 may be made of other transparent materials such as transparent PET film according to actual needs by those skilled in the art.

Next, the photovoltaic device 100 and the transparent panel 800 are bonded by an EVA adhesive film. The EVA adhesive film has good adhesive force and durability, which can improve the connection strength of the photovoltaic member 100 and the transparent panel 800.

Alternatively, the heat absorbing member 200 is a heat absorbing aluminum alloy plate. The aluminum alloy plate has certain strength and good heat preservation. In addition, the photovoltaic member 100 may be a photovoltaic cell sheet.

Optionally, a first thermal insulation layer is disposed between the heat absorbing member 200 and the photothermal tube 500, and the first thermal insulation layer may be made of a foam material or a multi-layer fiber, and has a thermal insulation function.

In order to improve the heat exchange efficiency between the photo-thermal tube 500 and the encapsulation groove 300, the photo-thermal tube 500 is tangentially arranged to the outer wall of the encapsulation groove 300.

In this embodiment, the phase change body 400 is composed of a 56 degree c phase change energy storage material, which includes polyether polyol, isocyanate, sodium metabisulfite, phosphogypsum, anhydrous sodium acetate and foam metal.

Alternatively, the longitudinal section of the package groove 300 is square, which facilitates processing, and secondly, facilitates the arrangement of the photo-thermal tube 500.

In this embodiment, the periphery of photovoltaic piece 100 is equipped with the aluminium frame, and transparent panel 800 can be protected to the aluminium frame, and the aluminium frame has increased this compound solar panel's sealing performance.

In the present embodiment, a heat collecting back plate 900 is disposed at an end of the packaging groove 300 away from the photovoltaic device 100. The heat collecting back plate 900 plays a role in protecting the encapsulation groove 300 and the photo-thermal tube 500, and also plays a role in heat preservation.

Specifically, a second heat insulation layer is arranged on one side of the heat collection back plate 900 far away from the light and heat pipe 500, and the second heat insulation layer is tightly attached to the heat collection back plate 900, so that heat dissipation of the back of the heat collection back plate 900 is effectively avoided, and the heat insulation effect of the heat collection back plate 900 is improved.

Further, all the light and heat pipes 500 are tangent to the heat collecting backboard 900 to prevent the light and heat pipes 500 from shaking during transportation of the composite solar panel.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Composite solar panel, its characterized in that includes:

a photovoltaic member (100);

a heat absorbing member (200) provided on a lower surface of the photovoltaic member (100);

the packaging grooves (300) are arranged on the lower surface of the heat absorbing piece (200), the packaging grooves (300) are arranged in parallel and at intervals, and phase change bodies (400) are arranged in the packaging grooves (300);

the light and heat pipe (500) is positioned between the adjacent packaging grooves (300), the light and heat pipe (500) is bonded to the lower surface of the heat absorbing piece (200), and a heat conducting layer (600) is filled in a gap between the light and heat pipe (500) and the packaging grooves (300).

2. Composite solar panel according to claim 1, wherein an insulating layer (700) is provided between the photovoltaic member (100) and the heat absorbing member (200).

3. The composite solar panel according to claim 2, wherein the insulating layer (700) is a TPT insulating layer.

4. Solar panel according to claim 1, wherein the upper surface of the photovoltaic member (100) is provided with a transparent panel (800).

5. Composite solar panel according to claim 4, wherein the photovoltaic (100) and the transparent panel (800) are bonded by an EVA adhesive film.

6. The composite solar panel according to claim 1, wherein the photo-thermal pipe (500) is arranged tangentially to an outer wall of the encapsulation groove (300).

7. Composite solar panel according to claim 6, wherein the encapsulation groove (300) is provided with a heat collecting back plate (900) at the end facing away from the photovoltaic element (100).

8. The composite solar panel according to claim 7, wherein all the light and heat pipes (500) are arranged tangentially to the heat collecting back plate (900).

9. Composite solar panel according to any one of claims 1 to 8, wherein the encapsulation groove (300) has a square longitudinal cross-section.

10. Composite solar panel according to any one of claims 1 to 8, wherein the periphery of the photovoltaic element (100) is provided with an aluminum border.