Photovoltaic wall type assembly and system thereof

Abstract

The invention discloses a photovoltaic wall-type assembly and a system thereof, the photovoltaic wall-type assembly comprises a photovoltaic assembly and a photovoltaic wall brick cavity made of a foamed ceramic material, the photovoltaic assembly comprises a transparent photovoltaic front plate, a packaging adhesive film filled in an inner cavity and a photovoltaic cell string in sequence from a light receiving surface to a back surface, the photovoltaic assembly is embedded in the photovoltaic wall brick cavity, and the packaging adhesive film is arranged in the photovoltaic wall brick cavity. A mounting groove corresponding to a photovoltaic module is formed in the surface of the photovoltaic wall brick cavity, a low-porosity sealing layer is arranged on the surface of the mounting groove, edge sealing groove notches are formed in the periphery of the photovoltaic wall brick cavity, a local convex part is arranged on one side of the photovoltaic wall brick cavity, and a local concave part matched with the convex part is correspondingly arranged on the other side of the photovoltaic wall brick cavity. A junction box installation opening is formed in the side edge of the back face of the photovoltaic wall brick cavity. The photovoltaic wall body type assembly made of the foaming ceramic material is adopted, a mounting support is not needed, a fireproof layer does not need to be additionally constructed, wall bricks of a building are directly replaced, and the multiple functions of sound insulation, fire prevention, water prevention, moisture prevention and the like are achieved.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and in particular to a photovoltaic wall assembly and a system thereof. Background Art

[0002] At present, the installation of photovoltaic walls is mainly divided into two categories: 1. Solar photovoltaic curtain wall, this solution combines lighting with photovoltaic power generation, but the power generation efficiency is low, the average conversion efficiency of photovoltaic modules is less than 20%, and it is not suitable for direct use as the wall of the building. Generally, it needs to be embedded in aluminum alloy profiles and thickened explosion-proof glass is required; 2. By installing brackets on the exterior walls of the building, the traditional photovoltaic modules are fixed on the wall. This type of application is mainly on the roof and wall. In addition to the high cost and complex installation of photovoltaic brackets, there are also safety hazards such as rust and corrosion. In addition, there is a risk of fire in photovoltaic power stations, so a fireproof layer needs to be built directly between the wall and the module. This is also the reason why the installation of photovoltaic walls has not been widely promoted.

[0003] The conversion efficiency of the above-mentioned photovoltaic curtain wall is low, and the traditional photovoltaic modules need to be installed on the wall by hanging, which not only requires the use of a large number of brackets, but also the labor cost of installation is expensive. At present, most wall solutions cannot be promoted mainly because they cannot solve the fire prevention measures well. Therefore, it is necessary to design a photovoltaic wall module to replace the wall tiles of the building, and play multiple functions such as sound insulation, fire prevention, waterproofing, and moisture-proofing. Summary of the invention

[0004] In response to the above problems, the present invention provides a photovoltaic wall assembly and its system which does not require the use of an installation bracket and does not require the construction of an additional fireproof layer. The photovoltaic wall assembly directly replaces the wall bricks of a building and has multiple functions such as sound insulation, fire prevention, waterproofing, and moisture-proofing.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a photovoltaic wall-type component, including a photovoltaic component and a photovoltaic wall brick cavity made of foam ceramic material, the photovoltaic component is composed of a transparent photovoltaic front panel, a packaging film filling the inner cavity, and a photovoltaic cell string from the light-receiving surface to the back side, the photovoltaic component is embedded in the photovoltaic wall brick cavity, and an installation groove is set on the surface of the photovoltaic wall brick cavity corresponding to the photovoltaic component, and a low-porosity sealing layer is provided on the surface of the installation groove. The photovoltaic wall brick cavity is provided with an edge sealing groove notch around it, a local protruding part is provided on one side of the photovoltaic wall brick cavity, and a local recessed part matching the protruding part is provided on the other side, and a junction box installation port is provided on the back side of the photovoltaic wall brick cavity.

[0006] Furthermore, the foam ceramic material is a Class A non-combustible material with a bulk density of 380-430 kg / m³ and a compressive strength of more than 5 MPa.

[0007] Furthermore, the transparent photovoltaic front panel is one of transparent tempered glass and ETFE aging-resistant photovoltaic front panel.

[0008] Furthermore, the packaging film filling the inner cavity is one of conventional photovoltaic module packaging films such as EVA, POE, and EPE.

[0009] Furthermore, the photovoltaic cell string is one of conventional HJT, Topcon, HBC, IBC, and ABC.

[0010] Furthermore, the opening position of the junction box installation port on the back of the photovoltaic wall tile cavity is based on the wiring design of the component array of the photovoltaic wall type component.

[0011] A photovoltaic wall system using the photovoltaic wall assembly, the photovoltaic wall system is composed of a square array composed of a plurality of photovoltaic wall assemblies, according to the designed circuit drawings, photovoltaic wall assemblies with certain differences are selected for masonry and splicing, after the junction wiring is completed, small foam ceramic bricks matching the mounting openings of the back junction box are used to seal the system by applying mortar, so that the back side forms a flat wall, and the light-receiving side uses decorative strip bricks to masonry and wrap the reserved edge sealing groove gaps, after the square array is installed, it is connected to the power grid through a junction box, an inverter, and a central control system for power supply or stored in an energy storage system.

[0012] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages:

[0013] 1. The present invention adopts foamed ceramic materials which are more lightweight. The photovoltaic wall-type components after packaging of the same area are relatively lightweight and weigh only 1 / 3 of the weight of traditional wall tiles. They are easy to construct and can replace wall tiles and photovoltaic components at the same time. They are a combination of the two. Unlike traditional photovoltaic components that are installed on the wall by brackets, there is no need to use brackets and there is no need to construct a fireproof layer separately. They have multiple functions such as sound insulation, fire prevention, waterproofing, and moisture-proofing.

[0014] 2. The present invention utilizes the easy processing property of foam ceramic materials and sets matching local raised parts and local recessed parts for inlaying, which facilitates installation and ensures overall firmness. A junction box installation port can be opened according to the wiring of the component array, and the repair of damaged components is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of a cross-sectional structure of a photovoltaic wall-type assembly according to an embodiment;

[0017] Figure 2 A 3D schematic diagram of a photovoltaic wall assembly according to an embodiment;

[0018] Figure 3 It is a partial schematic diagram of a photovoltaic wall type assembly after installation in an embodiment;

[0019] Figure 4 It is a front view schematic diagram of the components of the embodiment installed on a building;

[0020] Figure 5 It is a front view schematic diagram of a photovoltaic wall-type assembly array after installation of the embodiment;

[0021] Figure 6 for Figure 5 A local enlarged schematic diagram of the M region;

[0022] Figure 7 A schematic diagram of the back side of a photovoltaic wall-type assembly array installed on a building in an embodiment;

[0023] Figure 8 It is a schematic diagram of the back side of the photovoltaic wall-type assembly array after installation of the embodiment;

[0024] Fig. 9 for Figure 8 A local enlarged schematic diagram of the N region;

[0025] Fig.10 for Figure 8 Schematic diagram of the circuit layout of the component array;

[0026] Fig.11 A schematic diagram of the back structure difference of a photovoltaic wall type assembly according to an embodiment;

[0027] Fig.12 A schematic diagram of the differences in the splicing of photovoltaic wall-type components in an embodiment. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] Example

[0030] like Figure 1As shown, a photovoltaic wall assembly X1 includes a photovoltaic assembly 100 and a photovoltaic wall brick cavity 200 made of foam ceramic material, wherein the photovoltaic assembly comprises a transparent photovoltaic front panel 101, a packaging film 102 filling the inner cavity, and a photovoltaic cell string 103 from the light-receiving surface to the back surface, and the photovoltaic assembly 100 is embedded in the photovoltaic wall brick cavity 200. A mounting groove 201 is arranged on the surface of the photovoltaic wall brick cavity 200 corresponding to the photovoltaic assembly, and a low-porosity sealing layer 300 is arranged on the surface of the mounting groove 201. The photovoltaic wall brick cavity 200 is provided with an edge sealing groove notch 202 around it, a local protruding portion 203 is arranged on one side of the photovoltaic wall brick cavity, and a local recessed portion 204 corresponding to the protruding portion is arranged on the other side, and a junction box mounting opening 205 is arranged on the back side of the photovoltaic wall brick cavity 200.

[0031] The foam ceramic material of the photovoltaic wall tile cavity 200 has a bulk density of 380~430kg / m³ and a compressive strength of more than 5MPa. It is a Class A non-combustible material fired at 1200℃. It uses inorganic mineral raw materials, is green and pollution-free, has good waterproof and moisture-proof properties, has excellent thermal insulation properties, and can effectively reduce noise transmission.

[0032] The transparent photovoltaic front plate 101 is made of 3.2 mm transparent anti-glare tempered glass; the packaging film 102 filling the inner cavity is a conventional photovoltaic module packaging film EVA; and the photovoltaic cell string 103 is a high-efficiency HBC cell.

[0033] like Figure 2 As shown, this is a 3D appearance diagram of the photovoltaic wall-mounted component X1. The overall dimensions of the component X1 are: 130 cm long, 100 cm wide, and 24 cm thick. The large notch 205 for installing the junction box has dimensions: 30 cm long and 25 cm wide, which is more conducive to manual wiring.

[0034] like Figure 3 As shown, the wall-mounted component A is installed on the wall-mounted component B, and the local concave part A-204 of the component A and the local convex part B-203 of the component B are inlaid and bonded with mortar; the negative pole A-500 of the junction box of the component A and the positive pole B-500 of the junction box of the component B can be connected by the reserved large gap. When the edge sealing groove gap A-202 of the component A and the edge sealing groove gap B-202 of the component B are merged, a concave groove is formed, and the decorative strip brick X2 is embedded in the groove by applying mortar, and at the same time, the exposed glass edges of the components A and B are protected.

[0035] Figure 4 The following is a schematic diagram of the light-receiving surface of four photovoltaic wall modules X1 installed on the building Y. In order to better illustrate the layout of the photovoltaic module solution, combined with Figure 5As shown, it is a front view of 20 photovoltaic wall modules X1 after installation. From the appearance, only the anti-glare tempered glass 101, the decorative bricks X2 and the photovoltaic module battery strings 103 can be seen.

[0036] like Figure 6 As shown, Figure 5 By zooming in on the M area, you can see that component X1 is surrounded by cross-shaped decorative bricks X2-1, X2-2, X2-3, and X2-4.

[0037] Figure 7 Schematic diagram of the backlight surface of four photovoltaic wall modules X1 installed on the building Y. Figure 3 As shown, after the lines are connected, small foam ceramic tiles X3 matching the gaps are sealed by applying mortar to form a flat wall on the back side.

[0038] like Figure 8 As shown in the figure, in order to meet the busbar wiring requirements of the wall, the wiring of the component array will be designed in advance, and the lead-out position of the photovoltaic wall-mounted component X1 junction box will be adjusted. The two junction box gaps of component 1 are arranged at the lower end and the right end respectively; components 2 and 3 belong to the same type of modules, and the junction box gaps are arranged at the left and right ends respectively. Enlarge the N area, such as Fig. 9 As shown, the negative electrode 2-500 of the junction box of component 2 is connected to the positive electrode 3-500 of the junction box of component 3, thereby forming a circuit of the photovoltaic component array.

[0039] Fig.10 for Figure 8 Schematic diagram of the component array line layout, component No. 1 is connected to component No. 2, component No. 2 is connected to component No. 3, and so on, all the way to component No. 20, just forming a component array, and the positive and negative poles of the array are returned to the same end to facilitate the parallel connection of the array.

[0040] In order to better illustrate the types of the rear modules of the photovoltaic wall module X1, Fig.11 As shown, the arrangement can be preliminarily divided into 12 types according to the polarity and orientation of the junction box. Specifically, component X-1 is the lower positive pole and the upper negative pole, component X-2 is the lower negative pole and the upper positive pole, component X-3 is the left positive pole and the right negative pole, component X-4 is the right positive pole and the left negative pole, component X-5 is the lower positive pole and the left negative pole, component X-6 is the lower positive pole and the right negative pole, component X-7 is the lower negative pole and the left positive pole, component X-8 is the lower negative pole and the right positive pole, component X-9 is the upper positive pole and the left negative pole, component X-10 is the upper positive pole and the right negative pole, component X-11 is the upper negative pole and the left positive pole, and component X-12 is the upper negative pole and the right positive pole.

[0041] Further, according to the needs of installation and splicing, such as Fig.12 As shown, the photovoltaic wall type component Y-1 has no local raised portion 203 on the upper part, and only retains the local recessed portion 204 on the lower part, and is generally used for splicing the upper end of the wall; the photovoltaic wall type component Y-2 has no local recessed portion 204 on the lower part, and only retains the local raised portion 203 on the upper part, and is generally used for splicing the lower end of the wall; the photovoltaic wall type component Y-3 has no local raised portion 203 on the upper part and no local recessed portion 204 on the lower part, and is generally used for special parts of the wall and for repair splicing.

[0042] Photovoltaic wall module system Fig.10 As shown, the overall array routing is designed first, and then Fig.11 , Fig.12 Select the photovoltaic wall module you need to use, and further Figure 8 The photovoltaic wall module system is composed of several square arrays of the above modules, which are directly supplied to the grid or stored in the energy storage system of the building after passing through the junction box, inverter and central control system.

[0043] Repair method for damaged components: first cut out the small foam ceramic brick X3 on the back, then remove the corresponding decorative brick X2 on the front, cut along the joint of the edge sealing groove notch 202, remove the damaged component, and replace it with a new component. The operation is convenient and simple.

[0044] The present invention adopts foamed ceramic materials, which are more lightweight. The photovoltaic wall-type components after packaging of the same area are relatively lightweight, weighing only 1 / 3 of the weight of traditional wall tiles, and are easy to construct. They can replace wall tiles and photovoltaic components at the same time, and are a combination of the two. Unlike traditional photovoltaic components that are installed on the wall by brackets, there is no need to use brackets, and there is no need to construct a fireproof layer separately, which plays multiple functions such as sound insulation, fire prevention, waterproofing, and moisture resistance. Taking advantage of the easy processing characteristics of foamed ceramic materials, by setting matching local raised parts and local recessed parts for inlaying, it is convenient to install and ensure the overall firmness. The junction box installation port can be opened according to the wiring of the component array, and the repair of damaged components is convenient and quick.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic wall assembly, characterized in that: It includes a photovoltaic component and a photovoltaic wall brick cavity made of foam ceramic material. The photovoltaic component comprises a transparent photovoltaic front panel, a packaging film filling the inner cavity, and a photovoltaic cell string from the light-receiving surface to the back surface. The photovoltaic component is embedded in the photovoltaic wall brick cavity. A mounting groove is arranged on the surface of the photovoltaic wall brick cavity corresponding to the photovoltaic component. A low-porosity sealing layer is arranged on the surface of the mounting groove. Edge sealing groove notches are arranged around the photovoltaic wall brick cavity. A local protrusion is arranged on one side of the photovoltaic wall brick cavity, and a local recessed portion matching the protrusion is arranged on the other side. A junction box installation opening is arranged on the back side of the photovoltaic wall brick cavity.

2. A photovoltaic wall assembly according to claim 1, characterized in that: The foam ceramic material is a Class A non-combustible material with a bulk density of 380-430 kg / m³ and a compressive strength of more than 5 MPa.

3. A photovoltaic wall assembly according to claim 1, characterized in that: The transparent photovoltaic front plate is one of transparent tempered glass and ETFE anti-aging photovoltaic front plate.

4. A photovoltaic wall assembly according to claim 1, characterized in that: The packaging film filling the inner cavity is one of conventional photovoltaic module packaging films such as EVA, POE and EPE.

5. A photovoltaic wall assembly according to claim 1, characterized in that: The photovoltaic cell string is one of conventional HJT, Topcon, HBC, IBC, and ABC.

6. A photovoltaic wall assembly according to claim 1, characterized in that: The opening position of the junction box installation port on the back of the photovoltaic wall brick cavity is based on the wiring design of the component array of the photovoltaic wall type component.

7. A photovoltaic wall system using the photovoltaic wall assembly according to claim 1, characterized in that: The photovoltaic wall system is composed of an array of photovoltaic wall components as described in claim 1. According to the designed circuit drawings, photovoltaic wall components with certain differences are selected for masonry and splicing. After the junction wiring is completed, small foam ceramic bricks that match the mounting port of the back junction box are used to seal the system by applying mortar, so that the back light forms a flat wall. The illuminated surface uses decorative strips to masonry and wrap the reserved edge sealing groove gaps. After the array is installed, it is connected to the power grid or stored in the energy storage system through the junction box, inverter, and central control system.

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