CN106409943B - Three glass photovoltaic and photothermal integral components - Google Patents

Abstract

The invention discloses a three-glass photovoltaic photothermal integrated assembly, which includes ultra-white low-iron suede glass (1), light-transmitting EVA film (7), solar cell panels (8), interconnection strips ( 9), bus bar (15), white EVA film (10), glass back plate (11), heat collecting rubber pad (12), glass bottom plate (13), aluminum-plastic composite thermal insulation film (14) and tight parts of the combined parts Firmware; the heat-collecting rubber pad includes a frame body (24), and partition bars (23) that are spaced apart from each other and staggered openings are arranged in the frame body. Several pipe joints (5) that go into the glass bottom plate. Through the unique combination of bolt fastening and glue connection, the integrated components can be quickly disassembled and assembled, convenient to use and easy to maintain. After the service life, the recycling rate is as high as 90%; the development of other industries.

Description

Three-glass photovoltaic photothermal integrated module

technical field

The invention relates to the technical field of solar photovoltaic photothermal equipment, in particular to a three-glass photovoltaic photothermal integrated component.

Background technique

In this industry, "double-glass photovoltaic modules" has become a hot spot in the solar photovoltaic industry. Double-glass photovoltaic modules are photovoltaic modules composed of two pieces of glass and batteries, replacing the organic material backplane and aluminum frame structure of traditional photovoltaic modules. . Double-glass photovoltaic modules are almost impermeable, corrosion-resistant, weather-resistant and fire-resistant, and can be used in high-humidity areas, agriculture/fishing complementary light, acid rain areas, high salt spray areas, etc., and have a simple structure, small size, and long life. long.

However, the shortcomings of double-glass photovoltaic modules and traditional photovoltaic modules are also very obvious: because the wavelength range of the spectral response of silicon (monocrystalline silicon, polycrystalline silicon) cells is between 320-1100nm, sunlight in other bands cannot be used for photovoltaic power generation. The photoelectric conversion efficiency of the most widely used double-glass crystalline silicon cell photovoltaic modules in the agricultural/fishery photoelectric complementary field is about 12%. and lifespan decline; recently, new double-glass photovoltaic modules dedicated to solar photovoltaic power generation bases (factories, fields) have been developed and produced at home and abroad. On the basis of double-glass photovoltaic modules, the spacing and density of photovoltaic panels have been adjusted, and improved The ultra-white low-transmittance EVA film backsheet increases the photovoltaic power generation efficiency of the module to about 17%, but the light and heat utilization rate is still zero.

Solar thermal power generation is a technology that converts light energy into heat energy, and then generates power through a traditional thermodynamic cycle, while solar photovoltaic power generation is a technology in which sunlight shines on a semiconductor p-n junction to form new hole-electron pairs, which are stored in the p-n junction. Under the action of the built-up electric field, the holes flow from the n-region to the p-region, and the electrons flow from the p-region to the n-region, forming a potential difference, and the light energy is directly converted into electrical energy. Therefore, photovoltaic power generation produces direct current, while solar thermal power generation produces alternating current like traditional thermal power, which is more compatible with traditional power generation methods and existing power grids, and can be directly connected to the grid. However, even if the existing photovoltaic power generation and solar thermal utilization are combined, they cannot form a good 1+1>2 effect, because most of the solar thermal power generation methods now use multiple rows of curved copper tubes (or other metal heat pipes) and Installed under the photovoltaic module, the gap is large, and it is indirect heat transfer, the heat utilization rate is not high, and the photovoltaic power generation module is often damaged due to poor heat dissipation, and the service life cannot reach the ideal range (≤15 years), how to solve it There are still some difficulties in the above problems.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of solar photovoltaic photothermal equipment in the prior art, and to provide a triple-glass photovoltaic system that is suitable for a wide range of solar light wave spectrum, compatible and complementary photovoltaic photothermal power generation, high solar conversion rate, and prolongs the life of photovoltaic modules. Photothermal integrated components.

The technical solution adopted for the technical problem to be solved by the present invention is: the three-glass photovoltaic photothermal integrated module includes ultra-white and low-iron suede glass, light-transmitting EVA film, solar panels, interconnection strips, Bus bar, white EVA film, glass backplane, heat-collecting rubber pad, glass bottom plate, aluminum-plastic composite thermal insulation film and fasteners combining the above parts; the glass backplane, glass bottom plate, heat-collecting rubber pad and liquid medium form For a heat collector, the heat-collecting rubber pad includes a frame, and the frame is provided with partition bars that are spaced apart from each other and staggered. Several pipe connections for the glass bottom plate.

Further, the fastener includes a bolt, a first washer at the upper end of the bolt, a step pad at the lower end of the bolt, a second washer, and a nut, and the bolt passes through the entire assembly through a screw sleeve and is connected to the photovoltaic photothermal support. One end of the screw sleeve and the step pad respectively penetrates into the component and fits closely with each other.

Further, the pipe joints include several water inlet pipe joints and water outlet pipe joints, the pipe joints penetrate into the glass bottom plate of the assembly and match with the chamfer of the glass bottom plate through the sealing ring.

Further, the thickness of the ultra-clear low-iron suede tempered glass is 1.8-3.2mm.

Beneficial effects of the present invention: compared with the prior art, 1. Through the compatible integration of photovoltaic modules and photothermal modules, the utilization rate of solar light energy is greatly improved, and the comprehensive efficiency of electricity and heat reaches more than 60%; 2. By setting S The S-shaped channel doubles the heat dissipation and cooling and heat-collecting and heat-absorbing area of the module. It not only effectively uses light and heat to generate electricity or is directly used in domestic and industrial production, but also the S-shaped channel directly contacts the photovoltaic power generation module, providing effective heat dissipation conditions. , prolonging the service life of photovoltaic modules, which can reach more than 30 years; 3. Since the heat of photovoltaic modules is cooled and absorbed by the liquid medium of photothermal modules and taken away for other systems, the intensity of solar light can be doubled (concentrating If the ratio is 2), the power of photovoltaic power generation can be doubled, and the amount of photovoltaic power generation can also be doubled; 4. Through the unique combination of bolt fastening and adhesive bonding, the integrated components can be quickly disassembled and assembled easily. It is easy to use and easy to maintain. After the service life, the recycling rate can reach more than 90%. 5. After mass production, it can absorb a large amount of production capacity in the domestic glass market and drive the development of other industries.

Description of drawings

Fig. 1 is the schematic diagram of the front view structure of the present invention,

Fig. 2 is a schematic diagram of the cross-sectional structure of A-A in Fig. 1,

Fig. 3 is a top view structural schematic diagram of Fig. 1,

Fig. 4 is a schematic diagram of the enlarged structure at B in Fig. 2,

Figure 5 is a schematic diagram of the enlarged structure at C in Figure 2,

Fig. 6 is the I-I sectional enlarged structural schematic diagram of Fig. 3,

FIG. 7 is a schematic diagram of the cross-sectional structure along line F-F of FIG. 3 .

In the figure, 1. Ultra-white low-iron suede glass 2. Edge wrapping film 3. Bolt 4. Nut 5. Pipe joint 6. Junction box 7. Light-transmitting EVA film 8. Solar panel 9. Interconnection strip 10. White EVA film 11, glass back plate 12, heat collecting rubber pad 13, glass bottom plate 14, aluminum-plastic composite thermal insulation film 15, bus bar 16, screw sleeve 17, first gasket 18, step pad 19, second gasket 20, joint nut 21. Joint gasket 22, sealing ring 23, partition strip 24, frame.

detailed description

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific embodiments according to the accompanying drawings.

As shown in Figures 1, 2, 3, and 4, the three-glass photovoltaic-thermal integrated module is mainly composed of an upper layer of ultra-white low-iron suede glass 1 (light transmittance above 92%, 1.8mm-3.2mm thick ), light-transmitting EVA film 7 (generally transparent color, high light transmittance requirements), solar panel 8 (composed of multiple crystalline silicon cells), interconnection bar 9, bus bar 15 (bus bar and interconnection bar are collectively referred to as welding belt), white EVA film 10 (the light transmittance requirement is lower than that of the light-transmitting EVA film), glass backplane 11, heat-collecting rubber pad 12 (set to support a cavity between the glass backplane and the glass bottom plate to form S-shaped channel, glass base plate 13, aluminum-plastic composite thermal insulation film 14 is formed, also includes the fastener that combines above-mentioned parts in addition.The glass back plate, glass base plate, heat-collecting glue pad and liquid medium form heat collector, described A plurality of pipe joints 5 penetrating into the glass bottom plate are connected under the heat-collecting rubber pad, and finally include the necessary components such as the edge-wrapping film 2 and the junction box 6 .

The heat-collecting rubber pad, specifically as shown in FIG. 7 , includes a frame body 24, and the frame body is provided with partition bars 23 spaced apart from each other and staggered to form an S-shaped channel. The heat-collecting rubber pad 12 is respectively Several pipe joints 5 penetrating into the glass bottom plate are connected.

The pipe joint, specifically as shown in Figure 6, includes water inlet pipe joints and water outlet pipe joints respectively located at the left and right ends, which are respectively installed in the two ends of the glass bottom plate of the assembly through joint nuts 20 and joint washers 21, so that The pipe joint penetrates into the glass bottom plate and matches the chamfer of the glass bottom plate through the sealing ring 22 (the purpose is to make the pipe joint easy to disassemble and have high-strength sealing), and the chamfer is preferably 45 degrees.

Described fastener, specifically as shown in Figure 5, it comprises bolt 3, nut 4, first washer 17, step pad 18, second washer 19, and described bolt passes through whole assembly and is connected in by screw sleeve 16 On the photovoltaic thermal support (not shown in the figure), one end of the screw sleeve and the step pad respectively penetrate into the component and fit closely with each other.

The three-glass photovoltaic photothermal integrated module has the composite function of photovoltaic power generation and heat collector. The heat collector absorbs light and heat. As a medium for light and heat absorption, the liquid medium enters the cavity surrounded by the heat-collecting rubber pad 12 of the module from the upper pipe joint 5, and cools and absorbs the heat (energy) of the photovoltaic module and absorbs solar energy along the S-shaped channel formed in it. The heat that penetrates the battery panel is discharged from the lower pipe joint and enters the next link system (power generation, daily heating for life and industrial production, etc.). Traditional copper tubes use air for heat transfer, and the heat transfer area is also greatly increased, so it can effectively absorb the heat generated by photovoltaic modules, the heat of solar energy passing through photovoltaic modules, and the heat of other wavelength bands of sunlight. , effectively prolonging the service life of the photovoltaic module and improving the comprehensive photoelectric efficiency, and the connection mode of glue joint and bolt fastening is also more convenient for maintenance and repair of the module.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to specific embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present invention, all of them shall be included in the protection scope of the claims of the present invention.

Claims (3)

1. Three-glass photo-thermal integrated module, characterized in that it includes ultra-white low-iron suede glass (1), light-transmitting EVA film (7), solar panels (8), interconnection Strip (9), bus bar (15), white EVA film (10), glass back plate (11), heat-collecting rubber pad (12), glass bottom plate (13), aluminum-plastic composite thermal insulation film (14) and a combination of the above Part of the fastener; the glass back plate, the glass bottom plate, the heat-collecting rubber pad and the liquid medium form a heat collector, and the heat-collecting rubber pad includes a frame (24), and the frame is provided with mutually spaced and staggered openings Partition strips (23), the partition strips divide the frame into S-shaped channels, several pipe joints (5) penetrating into the glass bottom plate are connected under the heat collecting rubber pad, and the light transmittance of the white EVA film is lower than Light-transmitting EVA film, the fastener includes a bolt (3), a first washer (17) at the upper end of the bolt, a step pad (18) at the lower end of the bolt, a second washer (19), and a nut (4). The screw sleeve (16) passes through the entire assembly and is connected to the photovoltaic photothermal support, and one end of the screw sleeve and the step pad respectively penetrates into the assembly and closely fits each other. 2. The three-glass photovoltaic photothermal integrated assembly according to claim 1, characterized in that: the pipe joints include several water inlet pipe joints and water outlet pipe joints, and the pipe joints penetrate the glass bottom plate and pass through the sealing ring ( 22) Match the chamfer of the glass base plate. 3. The three-glass photovoltaic photothermal integrated assembly according to claim 1, characterized in that: the thickness of the ultra-white and low-iron suede glass is 1.8-3.2mm.