A double-sided grooved mounting plate for solar thermal energy collection

Abstract

The present invention belongs to the technical field of solar cell packaging and heat storage and heat exchange of heat-collecting metal plates, and relates to a double-sided grooved mounting plate for solar electric heat collection, including a substrate, a mounting groove is arranged on the front of the substrate, an isolation column or a mounting column is arranged between the mounting grooves, and an electrode groove is arranged at intervals on the back of the substrate. The present invention uses metal materials as a carrier, adopts a plane and groove structure design, can be closely attached to the heat exchange bellows and silicon-based solar cells, and plays a role in reducing the contact thermal resistance to the maximum extent, and at the same time plays a role in maximizing the heat conduction function, reducing the temperature of silicon-based solar cells, meeting the requirements of solar silicon-based battery arrangement and packaging power generation and installation of heat exchange bellows for heat exchange and cooling, effectively improving the efficiency of solar cell power generation and bellows heat exchange, and has broad market prospects.

Description

Technical Field

[0001] The present invention belongs to the technical field of solar cell packaging and heat storage and heat exchange of heat collecting metal plates in solar PV / T systems, and relates to a solar electric thermal integrated utilization installation board, and specifically to a double-sided grooved installation board for solar electric thermal collection. Background Art

[0002] In the development process of integrated solar power generation and thermal storage equipment, the technology of using solar energy to obtain thermal energy is relatively mature and inexpensive, but in terms of solar energy application devices, the technical equipment that can obtain both solar thermal energy and electrical energy at the same time is still immature.

[0003] At present, most of the solar thermal products on sale use water or oil as the heat storage medium for heating, heat exchange, storage, etc. In the field of solar high-temperature applications, nitrate is mainly used as the heat storage medium. When using water or oil as the heat storage medium, it has a large expansion coefficient when heated. Therefore, the heat storage box cannot store the same amount of expansion heat volume. Instead, a small box based on the expansion coefficient is added to the outside of the energy storage box as a container (expansion tank) for the expansion and overflow of the heated medium. This not only complicates the structure, but is also unsightly and unsafe, and increases the manufacturing and installation costs. When this liquid heat storage medium is heated, the temperature of the upper and lower layers of the medium is different. Due to the spatial structure of the heat storage cavity, the first heated medium will flow upward, causing the temperature of the heating surface of the equipment to be extremely uneven, which seriously affects the power generation of silicon-based solar cells. Moreover, due to the large local temperature difference of the surface temperature, the hot spot effect of the solar cell is increased. Such long-term use will damage the P / N junction of the silicon-based solar cell, and even burn the solar cell under high temperature conditions. At present, there is no practical and efficient integrated solar thermal equipment on the market. Therefore, it is urgent to develop an installation plate for encapsulating solar cells and having heat storage and cooling effects, which can avoid safety hazards caused by uneven temperature and expansion of liquid heat storage mesons. Summary of the invention

[0004] The purpose of the present invention is to provide a double-sided grooved mounting plate for solar thermal energy collection, which uses metal material as a carrier and adopts a plane and grooved structural design. It can meet the requirements of solar silicon-based battery arrangement and packaging for power generation and installation of heat exchange bellows for heat exchange and cooling, effectively improve the efficiency of solar cell power generation and bellows heat exchange, and has broad market prospects.

[0005] The technical solution adopted by the present invention is:

[0006] A double-sided grooved mounting plate for solar electric heat collection comprises a base plate. A mounting groove is arranged on the front side of the base plate for mounting a heat exchange bellows. Isolation columns are arranged between the mounting grooves for dividing and limiting the heat exchange bellows. A mounting column is arranged every several isolation columns. The mounting columns are slightly higher than the isolation columns. The mounting columns are used to ensure the consistency of the horizontal installation height of the heat exchange bellows with the thermal insulation layer installed. Electrode grooves are arranged at intervals on the back side of the base plate in the same direction as the mounting grooves for accommodating the positive main grid welding strips of silicon-based solar cells.

[0007] As a further improvement of the present invention, a circular hole is provided on the substrate in the same direction as the installation groove, the purpose of which is to reduce the structural weight and reserve screw holes. Preferably, the circular hole is provided below both sides of the groove, that is, below the isolation column or the installation column.

[0008] As a further improvement of the present invention, protrusions are provided on both sides of the top of the isolation column, preferably circular protrusions, for buckling the heat exchange bellows placed in the installation groove. Furthermore, a gap is provided on the top of the isolation column in the same direction as the installation groove, and the gap cooperates with the protrusions to facilitate the installation and fixation of the heat exchange bellows.

[0009] As a further improvement of the present invention, a glue coating groove is provided on the outer side of the isolation column or the installation column at the edge of the base plate, and the glue coating groove is used for gluing when assembling multiple boards.

[0010] Beneficial effects of the present invention:

[0011] 1. The present invention utilizes high thermal conductivity materials such as different metals or thermally conductive ceramics to improve the efficiency of solar cell power generation and bellows heat exchange.

[0012] 2. The present invention can install heat exchange bellows of the same diameter in the installation groove. Due to the buckling and tension of the protrusions and gaps of the isolation column, it can fit tightly with the heat exchange bellows, and the heat conduction resistance of the installation plate and the bellows is reduced to a minimum, thereby achieving the effect of efficient heat exchange.

[0013] 3. After the main grid welding strip on the positive side of the silicon-based solar cell is placed in the electrode groove of the substrate, the silicon-based solar cell can be seamlessly bonded with the mounting plate (due to the high flatness of the mounting plate and the positive side of the silicon-based solar cell, and the electrode groove effectively releases the position space of the main grid welding strip on the positive side of the silicon-based solar cell, the two can fit closely), which can reduce the contact thermal resistance to the maximum extent, and at the same time, it can maximize the heat conduction function, reduce the temperature of the silicon-based solar cell, and improve the effective power generation of the silicon-based solar cell and the efficient heat exchange of the bellows. It has been verified that the comprehensive solar thermal efficiency of the present invention in the demonstration test is above 72%. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front three-dimensional structural schematic diagram of the present invention.

[0015] Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention.

[0016] Figure 3 It is a schematic cross-sectional view of the structure of the present invention.

[0017] Figure 4 yes Figure 3 A partial enlarged view of part A in the middle.

[0018] In the figure: 1. Installation groove; 2. Electrode groove; 3. Isolation column; 4. Installation column; 5. Round hole; 6. Glue coating groove; 7. Protrusion; 8. Gap. DETAILED DESCRIPTION

[0019] The present invention will be further described below by way of examples in conjunction with the accompanying drawings, but this is not intended to limit the present invention.

[0020] exist Figure 1 , 2 In the structures shown in , 3, and 4, the double-sided grooved mounting plate for solar thermal energy collection provided by the present invention comprises a substrate, with aluminum alloy as a carrier, 19 U-shaped mounting grooves 1 of the same size are extruded on the front side of the substrate by a high temperature or hot extrusion manufacturing process, isolation columns 3 are arranged between the mounting grooves 1, circular protrusions 7 are arranged on both sides of the top of the isolation columns 3, and a gap 8 in the same direction as the mounting groove is opened in the middle, the circular protrusion 7 and the gap 8 cooperate with each other, which is more conducive to the installation and fixation of the heat exchange bellows, and a mounting column 4 is arranged every four isolation columns 3. The mounting column is slightly higher than the isolation column. The mounting column is used to ensure the consistency of the horizontal installation height of the insulation layer installed on the heat exchange bellows. Generally speaking, in order to ensure the installation accuracy, there are mounting columns 4 on both sides of the substrate; 10 electrode grooves 2 with the same size, equal spacing and the same direction as the mounting groove are extruded on the back of the substrate by high temperature or hot extrusion manufacturing process, which are used to place the positive main grid welding strip of the silicon-based solar cell; a circular cavity 5 in the same direction as the mounting groove 1 is opened below the isolation column 3 or the mounting column 4, which can reduce the structural weight of the substrate and reserve screw holes.

[0021] When implementing the present invention, if it is necessary to increase the area of ​​the mounting plate, a glue groove 6 can be set on the outer side of the mounting column 4 on the left and / or right edge of the substrate, high temperature resistant glue is applied in the glue groove 6, and then the mounting plates are abutted and combined into a whole, so that multiple substrates can be assembled and used.

[0022] Working principle of the present invention:

[0023] 1. Press Figure 1As shown, place the mounting plate flat on a horizontal workbench, install the S-shaped corrugated pipe in the mounting groove 1 according to the relative position of the U-shaped mounting groove 1 and press it tightly. At this time, the circular protrusions 7 arranged on both sides of the top of the isolation column 3 and the gap 8 in the middle in the same direction as the mounting groove play a synergistic role in fastening the corrugated pipe.

[0024] 2. Turn the mounting plate over ( Figure 2 As shown), after spraying a ceramic insulating layer on one side of the electrode groove 2 on the back of the mounting plate, the positive main grid welding strip of the solar silicon-based cell is filled in the electrode groove 2, and then the glue is injected for packaging.

[0025] 3. Finally, install the mounting plate on the insulation layer. Since the mounting column 4 is higher than the isolation column 3, the mounting column 4 supports and protects the heat exchange bellows to avoid damage to the heat exchange bellows due to collision, twisting and other problems.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A double-sided grooved mounting plate for solar thermal energy collection, characterized in that: The invention comprises a substrate, a mounting groove is arranged on the front side of the substrate, isolation columns are arranged between the mounting grooves, a mounting column is arranged every several isolation columns, and the mounting column is slightly higher than the isolation columns; electrode grooves are arranged at intervals on the back side of the substrate in the same direction as the mounting grooves.

2. The mounting plate according to claim 1, characterized in that: A circular cavity is opened on the substrate in the same direction as the mounting groove.

3. The mounting plate according to claim 1, characterized in that: Both sides of the top of the isolation column are provided with protrusions.

4. The mounting plate according to claim 1, characterized in that: The top of the isolation column is provided with a gap in the same direction as the installation groove.

5. The mounting plate according to claim 1, characterized in that: A glue coating groove is provided on the outer side of the isolation column or the installation column at the edge of the substrate.

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