阅读说明：本技术 太阳能光伏热电联产组件 (Solar photovoltaic cogeneration assembly ) 是由 房聚银 熊海燕 欧阳� 葛凯旋 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种太阳能光伏热电联产组件,由上至下依次为钢化玻璃盖板、第一EVA层、电池片、第二EVA层和流道背板,流道背板由固定连接的流道背板上底面与流道背板下底面组成,所述流道背板上底面与流道背板下底面之间具有流道空腔,所述流道空腔由若干条流道组成。本发明的太阳能光伏热电联产组件在降低电池片环境温度的同时对液体介质加热,把电池片发电时产生的热量尽可能多的带走,提高了发电效率。(The invention discloses a solar photovoltaic cogeneration assembly which sequentially comprises a toughened glass cover plate, a first EVA layer, a battery piece, a second EVA layer and a runner back plate from top to bottom, wherein the runner back plate consists of an upper bottom surface of the runner back plate and a lower bottom surface of the runner back plate which are fixedly connected, a runner cavity is arranged between the upper bottom surface of the runner back plate and the lower bottom surface of the runner back plate, and the runner cavity consists of a plurality of runners. The solar photovoltaic cogeneration assembly provided by the invention can reduce the environmental temperature of the cell and heat the liquid medium at the same time, so that the heat generated by the cell during power generation is taken away as much as possible, and the power generation efficiency is improved.)

1. The utility model provides a runner backplate for solar photovoltaic cogeneration of heat and power subassembly which characterized in that: the runner backboard comprises an upper bottom surface of the runner backboard and a lower bottom surface of the runner backboard which are fixedly connected, a runner cavity is arranged between the upper bottom surface of the runner backboard and the lower bottom surface of the runner backboard, and the runner cavity comprises a plurality of runners (61).

2. The runner back plate for a solar photovoltaic cogeneration module of claim 1, wherein: the upper part of the flow channel back plate is provided with at least one upper flow channel port (62), and the lower part is provided with at least one lower flow channel port (63).

3. The runner back plate for a solar photovoltaic cogeneration module according to claim 2, wherein: the runner backboard comprises a runner backboard body, a plurality of grooves and a plurality of connecting plates, wherein the lower bottom surface of the runner backboard body is provided with a plurality of parallel grooves, the upper bottom surface of the runner backboard body and the lower bottom surface of the runner backboard body are fixed together through welding, and the grooves are mutually communicated to form a runner cavity.

4. The runner back plate for a solar photovoltaic cogeneration module according to claim 2, wherein: the runner cavity is formed by a blow-up process.

5. The utility model provides a solar photovoltaic cogeneration component which characterized in that: the toughened glass cover plate (1), the first EVA layer (2), the battery piece (3), the second EVA layer (4) and the runner back plate of any one of claims 1-4 are arranged from top to bottom in sequence.

6. The solar photovoltaic cogeneration module of claim 5, wherein: an insulating coating (5) is also arranged between the second EVA layer (3) and the runner back plate.

7. The solar photovoltaic cogeneration module of claim 5, wherein: and a heat-insulating layer (7) and a decorative back plate (8) are also arranged below the flow channel back plate.

8. The solar photovoltaic cogeneration module of claim 7, wherein: the decorative back plate (8) is provided with a battery panel junction box (81), and the battery panel junction box (81) is electrically connected with the battery piece (3).

9. The solar photovoltaic cogeneration module of claim 8, wherein: the upper part of the decorative back plate (8) is provided with a runner upper interface (82), and the runner upper interface (82) is communicated with an upper runner opening (62) of the runner back plate; a runner lower connector (83) is arranged at the lower part of the decorative back plate (8), and the runner lower connector (83) is communicated with a lower runner opening (63) of the runner back plate; the runner upper connector (82) and the runner lower connector (83) are both connected with a liquid medium storage tank.

10. The solar photovoltaic cogeneration module of any one of claims 6-9, wherein: four sides of the solar photovoltaic cogeneration component are coated with a combined frame (9).

Technical Field

The invention relates to the technical field of photovoltaic thermoelectricity, in particular to a solar photovoltaic thermoelectricity cogeneration assembly.

Background

The solar cell module (also called solar panel) is a core part in a solar power generation system and is also the most important part in the solar power generation system. The solar energy is converted into electric energy, or the electric energy is sent to a storage battery for storage, or a load is pushed to work.

The power generation principle is as follows: positive and negative charges are separated in a PN junction area, so that an external current field can be generated, and current flows from the bottom end of the crystalline silicon wafer battery to the top end of the battery through negative current carriers, namely the photovoltaic effect. When a load is connected between the upper and lower surfaces of the solar cell, current flows through the load, and the solar cell generates current; the more photons the solar cell absorbs, the greater the current that is generated. The energy of the photon is determined by the wavelength, the photon below the energy of the basic energy can not generate free electrons, one photon above the energy of the basic energy can only generate one free electron, the excessive energy can heat the cell, and the efficiency of the solar cell is reduced along with the influence of the loss of electric energy.

The photovoltaic module can produce heat in the power generation process, and the high temperature not only influences the generating efficiency, but also increases the battery aging rate. The conversion rate of the crystalline silicon battery is reduced by 0.4% when the temperature of the battery is increased by 1 ℃; when the battery temperature reaches the upper limit, the battery aging rate will increase by 1 time every time the battery temperature rises by 10 ℃, so the temperature reduction of the battery assembly during power generation is very important.

In order to avoid overheating of the cell, a TPT back sheet is usually added below the second EVA film in the conventional solar cell module product, and sometimes a heat-conducting silica gel and a metal plate are added according to actual needs, so as to further improve the heat dissipation efficiency and reduce the temperature of the cell.

Although this type of solar cell module can reduce the ambient temperature of the cell, it also causes a large amount of waste of heat energy. Therefore, how to utilize solar energy more reasonably and efficiently becomes one of the problems that the researchers in the field need to solve urgently.

Disclosure of Invention

The invention aims to provide a solar photovoltaic cogeneration assembly.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a runner back plate for a solar photovoltaic cogeneration assembly comprises an upper bottom surface of the runner back plate and a lower bottom surface of the runner back plate which are fixedly connected, wherein a runner cavity is arranged between the upper bottom surface of the runner back plate and the lower bottom surface of the runner back plate, and the runner cavity is composed of a plurality of runners.

The upper part of the flow channel back plate is provided with at least one upper flow channel port, and the lower part of the flow channel back plate is provided with at least one lower flow channel port.

The runner backboard comprises a runner backboard body, a runner backboard top face, a runner backboard bottom face, a plurality of grooves, a plurality of connecting plates, a plurality of grooves, a connecting plates, a connecting plate, a plurality of connecting plate, a.

Alternatively, the runner cavity is formed by a blow-up process.

A solar photovoltaic cogeneration assembly comprises a tempered glass cover plate, a first EVA layer, a battery piece, a second EVA layer and the runner back plate from top to bottom in sequence.

And an insulating coating is also arranged between the second EVA layer and the runner back plate.

And an insulating layer and a decorative back plate are further arranged below the flow channel back plate.

The decorative back plate is provided with a battery panel junction box, and the battery panel junction box is electrically connected with the battery piece.

The upper part of the decorative back plate is provided with a runner upper interface which is communicated with an upper runner opening of the runner back plate; the lower part of the decorative back plate is provided with a lower runner interface which is communicated with a lower runner opening of the runner back plate; the runner upper connector and the runner lower connector are both connected with the liquid medium storage tank.

Wherein, the four sides of the solar photovoltaic cogeneration component are coated with a combined frame.

Compared with the prior art, the invention has the outstanding effects that:

(1) the runner back plate has the advantages of aging resistance, corrosion resistance, high heat conduction, good insulation and the like. The full flow channel plane of the flow channel back plate is tightly contacted with the battery piece, heat can be exchanged through the flow of the liquid medium, and the exchanged heat can be stored, so that the product has double benefits. The heat resistance of heat transfer is small, heat generated by the battery piece during power generation is taken away as much as possible, the temperature of the battery piece is reduced, and the power generation efficiency is improved.

(2) The solar photovoltaic cogeneration assembly provided by the invention can be used for heating a liquid medium while reducing the environmental temperature of the cell. If the solar cell is used in vast rural areas, water can be used as a heat exchange medium, hot water can be obtained while the environmental temperature of the cell is reduced, and the solar cell can be used as daily water for bathing, washing clothes and the like, and can achieve two purposes at one stroke.

The solar photovoltaic cogeneration module of the invention is further explained by the description of the figures and the specific embodiments.

Drawings

FIG. 1 is a schematic diagram of the internal structure of a runner back plate of a solar photovoltaic cogeneration module according to the invention;

FIG. 2 is a partial cross-sectional view of a runner back plate of the solar photovoltaic cogeneration module of the invention;

FIG. 3 is a cross-sectional view of a solar photovoltaic cogeneration module of the invention;

FIG. 4 is a schematic front view of a solar photovoltaic cogeneration module of the invention;

fig. 5 is a schematic back view of the solar photovoltaic cogeneration module of the invention.

The solar cell module comprises a 1-toughened glass cover plate, 2-a first EVA layer, 3-a cell, 4-a second EVA layer, 5-an insulating coating, 6-a runner back plate, 7-a heat insulation layer, 8-a decorative back plate, 9-a combined frame, 61-a runner, 62-an upper runner port, 63-a lower runner port, 81-a cell panel junction box, 82-an upper runner interface and 83-a lower runner interface.

Detailed Description

Example 1

As shown in fig. 1-2, a flow channel back plate comprises an upper bottom surface of the flow channel back plate and a lower bottom surface of the flow channel back plate which are fixedly connected, wherein a flow channel cavity is arranged between the upper bottom surface of the flow channel back plate and the lower bottom surface of the flow channel back plate, and the flow channel cavity comprises a plurality of flow channels 61. The upper part of the runner back plate is provided with 2 upper runner ports 62, and the lower part is provided with 2 lower runner ports 63.

The lower bottom surface of the runner back plate is provided with a plurality of parallel grooves, the upper bottom surface of the runner back plate and the lower bottom surface of the runner back plate are fixed together by welding, and the grooves are mutually communicated to form a runner cavity. The runner back plate 6 is made of stainless steel, and has the advantages of aging resistance, corrosion resistance, good sealing property, good insulating property and high heat conduction.

In other advantageous embodiments, the runner cavity may also be formed by an inflation process.

Example 2

As shown in fig. 3 to 5, the solar photovoltaic and thermoelectric cogeneration module manufactured by using the runner back plate of embodiment 1 sequentially comprises, from top to bottom, a tempered glass cover plate 1, a first EVA layer 2, a battery piece 3, a second EVA layer 3, an insulating coating 5, a runner back plate 6, an insulating layer 7 and a decorative back plate 8.

The toughened glass cover plate 1 is used for protecting a power generation main body (a battery piece), has light transmittance of more than 93 percent and is subjected to ultra-white toughening treatment.

The first EVA layer 2 is used for bonding and fixing the toughened glass cover plate 1 and the battery piece 3. The quality of the transparent EVA material directly influences the service life of the component, and the EVA exposed in the air is easy to age and yellow, so that the light transmittance of the component is influenced, and the power generation quality of the component is influenced. Besides the quality of EVA, the influence of the lamination process is very great, for example, the EVA adhesion degree does not reach the standard, and the EVA is not sufficiently adhered to toughened glass and a back plate, so that the EVA is aged in advance, and the service life of the assembly is influenced.

The cell 3 mainly functions to generate electricity, and can be a crystalline silicon solar cell and a thin film solar cell, which have advantages and disadvantages. The cost of the crystalline silicon solar cell is relatively low, but the consumption and cell cost are high, the photoelectric conversion efficiency is also high, and the solar cell is suitable for generating electricity under outdoor sunlight. The thin-film solar cell piece has higher equipment cost, low consumption and cell cost and low photoelectric conversion efficiency, is only about half of that of a crystalline silicon solar cell piece, but has very good weak light effect and can generate electricity under common lamplight.

The second EVA layer 4 is used for bonding and packaging the cell slice 3 and the runner back plate 6. The insulating coating 5 is used for ensuring the insulation between the battery piece 3 and the runner back plate 6.

The heat preservation layer 7 is used for locking heat, preventing heat from dissipating, enabling the heat to circularly pass through the flow channel back plate through the liquid medium to exchange heat, and storing the obtained heat in the heat preservation water tank. The heat-insulating layer is made of rock wool, glass wool and polyurethane heat-insulating material and has a thickness of about 3-5 cm.

The decorative back plate 8 is provided with a battery panel junction box 81 which plays a role of a current transfer station, and the battery panel junction box 81 is electrically connected with the battery piece 3. The decorative back plate 8 plays a role in sealing and supporting the heat-insulating layer 7.

The upper part of the decorative back plate 8 is provided with a runner upper interface 82, and the runner upper interface 82 is communicated with the upper runner opening 62 of the runner back plate; the lower part of the decorative back plate 8 is provided with a runner lower interface 83, and the runner lower interface 83 is communicated with the lower runner port 63 of the runner back plate; the runner upper connector 82 and the runner lower connector 83 are both connected with the heat preservation water tank.

The four sides of the solar photovoltaic cogeneration component are wrapped by the combined frame 9 which is made of aluminum alloy and used for protecting the pressing piece, playing a certain role in sealing and supporting, being light and having certain strength and being convenient to install.

The joint of the solar photovoltaic cogeneration module (such as between the module and an aluminum alloy frame and between the module and a battery panel junction box) is sealed by silica gel.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.