Cogeneration color photovoltaic panel

Abstract

The utility model relates to the technical field of photovoltaic panels, in particular to a cogeneration color photovoltaic panel which comprises a profile frame, color tempered glass and photovoltaic glass are arranged on the upper portion in the profile frame, and a temperature accumulation cavity is formed in the space between the color glass and the photovoltaic glass. The lower side of the photovoltaic glass is bonded with a solar cell through a bonding layer, the lower side of the solar cell is bonded with a heat collection plate through a rubber ring bonding layer, the lower side of the heat collection plate is provided with a heat preservation insulating layer, and the lower side of the heat preservation insulating layer is provided with a back plate. The device can be widely applied to various industrial and civil buildings, can be installed on a roof and an outer wall surface, greatly improves the distributed photovoltaic power generation capability of a city, and relieves the power supply pressure of a power grid between cities; photovoltaic power generation and photo-thermal are combined to form a photoelectric cogeneration result, and the collection conversion rate of unit light energy is increased to 55% or above; the rubber ring in the rubber ring bonding layer forms a heat insulation structure, thereby effectively reducing the temperature of the battery assembly and prolonging the service life of the assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic panels, in particular to a cogeneration color photovoltaic panel. Background Art

[0002] Photovoltaic glass refers to the glass used on the surface of photovoltaic panels. Currently, the photovoltaic glass and crystalline silicon cells on photovoltaic panels are pressed together with a film (adhesive layer) to form a single piece. To ensure power generation efficiency, ultra-clear glass is often used. To minimize reflection or escape of incident light, some glass uses textured glass. However, due to the required light transmittance of the glass, the color and distribution of the cells are directly reflected in the appearance. Because the black crystalline silicon cells of photovoltaic panels are exposed, photovoltaic panels can only be used on rooftops. If installed on large building walls, they will seriously damage the urban landscape.

[0003] Furthermore, there is no clear division between the north and south in the current use of PV / T photovoltaic panels, and there is no special temperature accumulation technology for use in the northern region. Ordinary PV / T solar panels freeze in cold winters in cold regions, causing the entire equipment system to fail to work or be damaged.

[0004] Furthermore, the combination of the solar collector and the crystalline silicon cell assembly—whether a coil-type collector, a coil-and-fin type collector, an inflation type collector, a heat pipe type collector, or a full-flow collector—is bonded together using a rubber adhesive film through lamination. Conventional PV / T solar panels, when left unshielded, generate high-temperature hot water in the summer in hot-summer, cold-winter regions, hot-summer, warm-winter regions, and even in the warmer south. This can seriously affect the power generation efficiency of the crystalline silicon cells and may even damage them. Therefore, the inventors of this patent provide a cogeneration color photovoltaic panel to address the issues raised in the aforementioned background technology. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a cogeneration color photovoltaic panel, including a profile frame, the profile frame is made of aluminum alloy, and colored glass and photovoltaic glass are arranged on the upper part of the profile frame, the colored glass is located on the outermost side, and the space between the colored glass and the photovoltaic glass forms a temperature accumulation cavity;

[0006] The lower side of the photovoltaic glass is bonded to the solar cell through a high-transmittance adhesive layer, and the lower side of the solar cell is bonded to the heat collecting plate through a rubber ring adhesive layer. The lower side of the heat collecting plate is provided with a thermal insulation layer, and the lower side of the thermal insulation layer is set as a backboard. The backboard and the colored glass seal the other structures within the profile frame.

[0007] Preferably, the colored glass is formed by printing patterns on the surface of highly light-transmitting tempered glass.

[0008] Preferably, the pattern at the microscopic level is grid-like lines or dot-matrix color patches, and the pattern printing methods include printing, screen printing and thermal transfer.

[0009] Preferably, the printing ink is inorganic ink, and the printing methods include forward printing and reverse printing.

[0010] Preferably, the thickness of the temperature accumulation chamber is 5 mm to 35 mm, and the area is equivalent to that of the photovoltaic glass.

[0011] Preferably, the adhesive layer comprises multiple hollow rubber rings disposed within the adhesive film. The thickness of the rubber rings is no greater than 4 mm, and the inner diameter is no greater than 3 cm. The number of rubber rings increases toward the top of the collector plate, and decreases toward the bottom, or is eliminated. A cavity is formed within the rubber rings, and the area of the cavity is no greater than 35% of the area of the collector plate.

[0012] Preferably, the thermal insulation layer is made of both flexible and hard materials.

[0013] Preferably: the heat collecting plate is in the form of a metal heat collecting plate, including flat box type, tube plate type, wing tube type, snake tube type, and plate fin type; the liquid flow mode in the heat collecting plate includes full flow channel, half flow channel and single flow channel; the liquid type in the heat collecting plate includes water, antifreeze, a mixture of antifreeze and water, and oil.

[0014] The technical effects and advantages of this utility model are:

[0015] The cogeneration color photovoltaic panels of this utility model can be widely applied to various industrial and civil buildings. They can be installed on roofs or exterior walls, greatly increasing the distributed photovoltaic power generation capacity of cities and greatly alleviating the pressure on inter-city power grids. The stable distributed photovoltaic system formed can still meet the basic electricity needs of cities in a state of war.

[0016] The utility model combines photovoltaic power generation and photothermal power generation to form a photovoltaic cogeneration result, which increases the collection and conversion rate of unit light energy to more than 55%, greatly improving efficiency.

[0017] The utility model provides an adhesive layer of rubber ring, and the rubber ring inside it forms a heat insulation structure, which can effectively reduce the temperature of the battery component and extend the service life of the component. At the same time, the design of the temperature accumulation chamber enables the photovoltaic panel to achieve a good temperature accumulation effect in northern regions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a color photovoltaic panel for combined heat and power generation provided in an embodiment of the present application;

[0019] Figure 2 This is a partial top view of the heat collecting plate in the cogeneration color photovoltaic panel provided in an embodiment of the present application;

[0020] Figure 3 It is a partial cross-sectional view of the heat collecting plate in the cogeneration color photovoltaic panel provided in an embodiment of the present application.

[0021] In the picture:

[0022] 1. Colored glass; 2. Heat accumulation chamber; 3. Photovoltaic glass; 4. Solar cell; 5. Rubber ring bonding layer; 6. Solar collector; 7. Thermal insulation layer; 8. Back panel; 9. Profile frame; 10. Photovoltaic panel junction box; 11. Heat medium inlet and outlet of solar collector. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

[0024] Example

[0025] See also Figure 1-3 In this embodiment, a color photovoltaic panel for cogeneration of heat and power is provided, including a profile frame 9, the profile frame 9 is made of aluminum alloy, and a colored glass 1 and a photovoltaic glass 3 are provided on the upper inner portion of the profile frame 9, the colored glass 1 is located on the outermost side, and the space between the colored glass 1 and the photovoltaic glass 3 forms a temperature accumulation cavity 2;

[0026] It should be noted that the heat accumulation chamber 2 between the colored glass 1 and the photovoltaic glass 3 is a structure required in cold northern regions, and is not required in hot summer and warm winter regions or even warmer regions. In warm regions, the photovoltaic glass 3 can be directly replaced with the colored glass 1, and the photovoltaic glass 3 and the heat accumulation chamber 2 can be omitted.

[0027] Colored glass 1 is formed by printing patterns on the surface of highly transparent glass. The patterns are grid-like lines or dot-like color patches at the microscopic level. Printing technologies include UV printing technology, screen printing technology, and thermal transfer technology. The inks used are inorganic inks, and the printing methods include both forward printing and reverse printing. The resulting colored glass 1 has a full color range, true color, and customized appearance. Therefore, photovoltaic panels can be widely used on various building exterior walls and structure surfaces.

[0028] A layer of colored glass 1 is added outside the photovoltaic glass 3, forming a 5mm to 35mm cavity between the two layers of glass. This cavity is the heat accumulation cavity 2, which has a heat insulation function. The thickness of the cavity is determined by the latitude and altitude of the region. The presence of the cavity can improve the heat accumulation capacity of the PV / T panel, thereby increasing the temperature of the heat collecting panel 6, making the PV / T panel more frost-resistant, suitable for cold regions in northern my country.

[0029] The lower side of the photovoltaic glass 3 is provided with a solar cell 4, and the two are bonded and fixed by a high-transmittance adhesive layer. The lower side of the solar cell 4 is bonded to the heat collecting plate 6 by an adhesive layer 5 of an adhesive ring. The lower side of the heat collecting plate 6 is provided with a thermal insulation layer 7. The lower side of the thermal insulation layer 7 is provided with a back plate 8. The back plate 8 is the lowermost structure. The back plate 8 and the colored glass 1 seal the other structures within the profile frame 9;

[0030] The material of the thermal insulation layer 7 includes both flexible materials and hard materials; the heat collecting plate 6 is a metal heat collecting plate, and the forms include flat box type, tube plate type, wing tube type, snake tube type, and plate fin type; the liquid flow mode in the heat collecting plate 6 includes full flow channel, semi-flow channel and single flow channel; the liquid type in the heat collecting plate 6 includes water, antifreeze, antifreeze and water mixture, and oil;

[0031] Before the adhesive film is laminated on the crystalline silicon cell (i.e., the solar cell 4) and the heat collecting plate 6, a hollow rubber ring is built into the laminating film. The inside of the rubber ring is hollow, the thickness of the rubber ring is no more than 4 mm, and the inner diameter is no more than 3 cm. The closer to the top of the heat collecting plate 6, the more rubber rings there are, and the closer to the bottom, the fewer rubber rings there are or no rubber rings are placed. A cavity is formed inside the rubber ring, and the area of the cavity is no more than 35% of the area of the heat collecting plate 6. The provision of the rubber ring can effectively reduce the warming effect of the heat collecting plate 6 on the crystalline silicon cell panel.

[0032] A photovoltaic panel box 10 is also installed on the inner side of the photovoltaic panel. Connecting wires are led out of the photovoltaic panel box 10 for electrical connection with the outside. At the same time, heat collecting panel inlet and outlet ports 11 are provided at the four corners of the heat collecting panel 6 for injecting or leading out heat medium.

[0033] In warm areas, sunlight passes through the colored photovoltaic glass 3 and shines on the solar cell 4. The solar cell 4 generates electricity under the action of photons, and the solar cell 4 accumulates heat energy and heats up. This heat energy is transferred to the heat collecting plate 6 through the rubber ring adhesive layer 5. The water inside the heat collecting plate 6 accumulates heat energy and heats up. The heat medium flows upward and flows out from the top outlet of the heat collecting plate, and the lower temperature heat medium flows in from the bottom of the heat collecting plate 6.

[0034] In northern regions, due to the low outdoor temperature, a heat accumulation chamber 2 is added. The heat energy reflected by the photovoltaic glass 3 is intercepted by the heat accumulation chamber 2, and the temperature inside the heat accumulation chamber 2 continues to rise, which helps to accumulate heat energy in the heat collecting plate 6.

[0035] The cogeneration color photovoltaic panels of this utility model can be widely applied to various industrial and civil buildings. They can be installed on roofs or exterior walls, greatly increasing the distributed photovoltaic power generation capacity of cities and greatly alleviating the pressure on the power supply of inter-city power grids. The stable distributed photovoltaic system formed can still meet the basic electricity needs of cities even in a state of war.

[0036] The utility model combines photovoltaic power generation and photothermal power generation to form a photovoltaic cogeneration result, which increases the collection and conversion rate of unit light energy to more than 55%, greatly improving efficiency.

[0037] The present invention provides an adhesive layer 5 of rubber ring, and the rubber ring inside it forms a heat insulation structure, which can effectively reduce the temperature of the battery assembly and extend the service life of the assembly. At the same time, the design of the temperature accumulation chamber 2 enables the photovoltaic panel to achieve a good temperature accumulation effect in northern regions.

[0038] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making any creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in this utility model shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A color photovoltaic panel for combined heat and power generation, comprising a profile frame (9), wherein the profile frame (9) is made of aluminum alloy and is characterized by: Colored glass (1) and photovoltaic glass (3) are provided on the upper inner portion of the profile frame (9), the colored glass (1) is located on the outermost side, and the space between the colored glass (1) and the photovoltaic glass (3) forms a temperature accumulation cavity (2); The lower side of the photovoltaic glass (3) is bonded to the solar cell (4) via a high-transmittance bonding layer, and the lower side of the solar cell (4) is bonded to the heat collecting plate (6) via a rubber ring bonding layer (5). The lower side of the heat collecting plate (6) is provided with a heat preservation and insulation layer (7), and the lower side of the heat preservation and insulation layer (7) is provided with a back plate (8). The back plate (8) and the colored glass (1) seal other structures within the profile frame (9).

2. The cogeneration color photovoltaic panel according to claim 1, characterized in that: The colored glass (1) is formed by printing a pattern on a highly light-transmitting glass surface and is tempered glass.

3. The cogeneration color photovoltaic panel according to claim 1, characterized in that: The thickness of the temperature accumulation chamber (2) is 5 mm to 35 mm.

4. The cogeneration color photovoltaic panel according to claim 1, characterized in that: A plurality of rubber rings are provided in the rubber ring bonding layer (5), and the rubber rings are placed between the solar cell sheet (4) and the heat collecting plate (6).

5. The cogeneration color photovoltaic panel according to claim 4, characterized in that: No adhesive is applied to the inside of the rubber ring, the thickness of the rubber ring is not greater than 4 mm, and the inner diameter is not greater than 3 cm. The closer to the top of the heat collecting plate (6), the more rubber rings there are, and the closer to the bottom of the heat collecting plate (6), the fewer rubber rings there are or no rubber rings are placed.

6. The cogeneration color photovoltaic panel according to claim 5, characterized in that: A cavity is formed inside the plurality of rubber rings, and the area of the cavity is no greater than 35% of the area of the heat collecting plate (6).

7. The cogeneration color photovoltaic panel according to claim 1, characterized in that: The material of the thermal insulation layer (7) includes both flexible materials and hard materials.

8. The cogeneration color photovoltaic panel according to claim 1, characterized in that: The heat collecting plate (6) is in the form of a metal heat collecting plate, and the forms include flat box type, tube plate type, wing tube type, snake tube type, and plate fin type; the liquid flow mode in the heat collecting plate (6) includes full flow channel, half flow channel, and single flow channel; the liquid type in the heat collecting plate (6) includes water, antifreeze, a mixture of antifreeze and water, and oil.

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