Photovoltaic units and photovoltaic systems

Abstract

The present application relates to a photovoltaic unit and a photovoltaic system for use on the facade of a building. The photovoltaic unit includes a first module and a second module arranged along a first direction, the first module being a photovoltaic component or a non-photovoltaic component; the second module including a photovoltaic component and / or a non-photovoltaic component; the size of the first module along the first direction is A; the size of the second module along the first direction is B; both ends of the first module along the second direction and both ends of the second module along the second direction are aligned; wherein A < 1 / 2B, A + B < H; H is the floor height of the building; the first direction and the second direction are perpendicular, the first direction is the direction from the ground to the top of the building, and the second direction is the width direction of the facade of the building. In this way, while ensuring the power generation capacity of the photovoltaic unit, the material utilization rate and manufacturing efficiency of the photovoltaic unit can be improved, and the production cost of the photovoltaic unit can be reduced.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to photovoltaic units and photovoltaic systems. Background Art

[0002] Green buildings have become a key technical approach to reduce building carbon emissions and achieve near-zero energy consumption and zero energy consumption. Among them, Building Integrated Photovitaics (BIPV) is a necessary condition for green buildings.

[0003] The current photovoltaic curtain wall components are usually building materials that can generate electricity by combining solar cells with various types of ordinary building glass. They can ensure the original functionality, safety and aesthetic requirements of the building, and can also provide electricity.

[0004] However, in the related art, there are multiple photovoltaic curtain wall assemblies of different sizes in the same building or different buildings, and the sizes of the photovoltaic curtain wall assemblies are relatively large, which increases the difficulty of manufacturing the photovoltaic curtain wall assemblies, resulting in a decrease in the utilization rate of the materials of the photovoltaic curtain wall assemblies (such as solar cells), and increases the production cost of the photovoltaic curtain wall assemblies. Utility Model Content

[0005] Based on this, the present application provides a photovoltaic unit and a photovoltaic system, which ensure the power generation capacity of the photovoltaic unit while improving the material utilization rate and manufacturing efficiency of the photovoltaic unit and reducing the production cost of the photovoltaic unit.

[0006] An embodiment of the first aspect of the present application provides a photovoltaic unit for the facade of a building, comprising a first module and a second module arranged along a first direction, the first module being a photovoltaic component or a non-photovoltaic component; the second module comprising a photovoltaic component and / or a non-photovoltaic component; a size of the first module along the first direction is A; a size of the second module along the first direction is B; both ends of the first module along the second direction and both ends of the second module along the second direction are aligned; wherein A<1 / 2B, A+B<H; H is the floor height of the building; the first direction is perpendicular to the second direction, the first direction is the direction from the ground to the top of the building, and the second direction is the width direction of the facade of the building.

[0007] In some embodiments, the second module includes a first sub-block and a second sub-block spaced apart along a first direction, the second sub-block being located on a side of the first sub-block away from the first module; the first sub-block is the photovoltaic component, the second sub-block is the non-photovoltaic component, the size of the first sub-block along the first direction is B1; the size of the second sub-block along the first direction is B2; B1+B2=B; B2<1 / 2(A+B1).

[0008] In some embodiments, a dimension B1 of the first sub-block along the first direction is 1130 mm to 2320 mm.

[0009] In some embodiments, a dimension B2 of the second sub-block along the first direction is 800 mm to 1200 mm.

[0010] In some embodiments, a dimension A of the first module along the first direction is 780 mm to 1200 mm.

[0011] In some embodiments, the dimensions of the first module and the second module along the second direction are both L, and L is 600 mm to 1800 mm.

[0012] In some of the embodiments, the non-photovoltaic component includes a plurality of stacked glasses, and an adhesive film is disposed between any adjacent glasses.

[0013] In some embodiments, the glass is at least one of tinted glass and patterned glass;

[0014] Alternatively, a release film with a pattern is attached to the outermost glass surface of the non-photovoltaic module;

[0015] Alternatively, an LED display device is attached to the outermost glass surface of the non-photovoltaic component.

[0016] An embodiment of the second aspect of the present application provides a photovoltaic system, comprising a plurality of photovoltaic units described in any of the above embodiments.

[0017] In some embodiments, the multiple photovoltaic units are used to be installed on the facade of a building, and the multiple photovoltaic units are arranged in an array along a first direction and a second direction on the facade of the building, the first direction is the direction from the ground to the top of the building, and the second direction is the width direction of the facade of the building.

[0018] The above-mentioned photovoltaic unit and photovoltaic system include a first module and a second module arranged along a first direction and aligned along a second direction, the size of the first module along the first direction is smaller than half of the size of the second module along the first direction, and the sum of the sizes of the first module and the second module along the first direction is smaller than the floor height of the building; that is, the photovoltaic unit is modularly designed, and the sizes of the first module and the second module in the photovoltaic unit along the first direction are positively correlated, and the sizes of the first module and the second module along the first direction are associated with the floor height of the building. In this way, on the one hand, it can provide formulaic guidance for the size design of photovoltaic units and shorten the time required for design; on the other hand, when the first module is a non-photovoltaic component and the second module includes a photovoltaic component, or the second module includes a photovoltaic component and a non-photovoltaic component, by making the size of the first module along the first direction smaller than half of the size of the second module along the first direction, the area of ​​the photovoltaic component can be guaranteed as much as possible, thereby ensuring the power generation capacity of the photovoltaic unit, so that the photovoltaic unit can generate enough electricity to power the interior of the building; furthermore, the size of the photovoltaic unit can be adapted to the floor height of the building, and the size uniformity of the photovoltaic units on the facade of the building is improved, which can facilitate the assembly line production of the photovoltaic unit, improve the production efficiency of the photovoltaic unit, shorten the delivery cycle of the photovoltaic unit, and reduce the production cost of the photovoltaic unit.

[0019] On the other hand, by making the first module a photovoltaic component or a non-photovoltaic component; the second module includes a photovoltaic component and / or a non-photovoltaic component; that is, the photovoltaic component and the non-photovoltaic component can be combined and designed separately, so that, on the one hand, the addition of non-photovoltaic components can reduce the cost of raw materials of the photovoltaic unit; on the other hand, the size of the photovoltaic component and the non-photovoltaic component can be reduced, the components of the photovoltaic component can be cut from the same raw material, and the components of the non-photovoltaic component can be cut from the same raw material, thereby improving the utilization rate of raw materials for making photovoltaic components and non-photovoltaic components, and greatly reducing the production cost of the photovoltaic unit. Furthermore, the non-photovoltaic unit does not need to consider circuit connection and other issues, thereby simplifying the design of the supporting structure of the photovoltaic unit, thereby further reducing the production cost of the photovoltaic unit. In addition, the size of the photovoltaic component and the non-photovoltaic component is small, which can be beneficial to improve the reliability of the photovoltaic component and the non-photovoltaic component itself, and then improve the reliability of the photovoltaic unit. In summary, the present application can improve the material utilization rate and production efficiency of the photovoltaic unit while ensuring the power generation capacity of the photovoltaic unit, reduce the production cost of the photovoltaic unit, and improve the reliability of the photovoltaic unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a photovoltaic unit provided in some embodiments of the present application.

[0021] Figure 2 Schematic diagram of the structure of photovoltaic units provided in other embodiments of the present application.

[0022] Figure 3 A schematic diagram of a partial structure in which photovoltaic units provided in some embodiments of the present application are installed on the facade of a building.

[0023] Figure 4 for Figure 3 A schematic diagram of the partial structure of the electrical connection between photovoltaic units is shown.

[0024] Figure 5 Schematic diagram of the partial structure of photovoltaic units installed on the facade of a building provided in some other embodiments of the present application.

[0025] Description of reference numerals:

[0026] 10. Photovoltaic unit;

[0027] 110, first module; 120, second module; 121, first sub-block; 122, second sub-block; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0030] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0034] The current photovoltaic curtain wall components are usually building materials that can generate electricity by combining solar cells with various types of ordinary building glass. They can ensure the original functionality, safety and aesthetic requirements of the building, and can also provide electricity.

[0035] However, in the related art, there are multiple photovoltaic curtain wall assemblies of different sizes in the same building or different buildings, and the sizes of the photovoltaic curtain wall assemblies are relatively large, which increases the difficulty of manufacturing the photovoltaic curtain wall assemblies, resulting in a decrease in the utilization rate of the materials of the photovoltaic curtain wall assemblies (such as solar cells), and increases the production cost of the photovoltaic curtain wall assemblies.

[0036] Based on the above problems, the present application provides a photovoltaic unit and a photovoltaic system, which ensure the power generation capacity of the photovoltaic unit while improving the material utilization rate and manufacturing efficiency of the photovoltaic unit and reducing the production cost of the photovoltaic unit.

[0037] First, see Figure 1 The embodiment of the present application provides a photovoltaic unit 10 for the facade of a building, including a first module 110 and a second module 120 arranged along a first direction X, the first module 110 is a photovoltaic component or a non-photovoltaic component; the second module 120 includes a photovoltaic component and / or a non-photovoltaic component; the size of the first module 110 along the first direction X is A; the size of the second module 120 along the first direction X is B; both ends of the first module 110 along the second direction Y and both ends of the second module 120 along the second direction Y are aligned; wherein A<1 / 2B, A+B<H; H is the floor height of the building; the first direction X and the second direction Y are perpendicular, the first direction X is the direction from the ground to the top of the building, and the second direction Y is the width direction of the facade of the building.

[0038] It should be noted that the first module 110 and the second module 120 can be fixed on the outer wall of the building through installation components such as primary and secondary keels, auxiliary frames, and cover plates. The photovoltaic module includes a laminate. The laminate includes a first substrate, a packaging material, a battery cell, and a second substrate. The packaging material can be an EVA (polyethylene-vinyl acetate resin) film, the first substrate can be glass, and the second substrate can be glass.

[0039] It is understandable that the facade of a building can be the facade of a public building (such as a shopping mall, office building), the facade of a residential building, the facade of an industrial plant, etc.

[0040] The photovoltaic unit 10 provided in the embodiment of the present application includes a first module 110 and a second module 120 arranged along a first direction X and aligned along a second direction Y. The size of the first module 110 along the first direction X is smaller than the size of the second module 120 along the first direction X, and the sum of the sizes of the first module 110 and the second module 120 along the first direction X is smaller than the floor height of the building; that is, the photovoltaic unit 10 is modularly designed, and the sizes of the first module 110 and the second module 120 in the photovoltaic unit 10 along the first direction X are positively correlated, and the sizes of the first module 110 and the second module 120 along the first direction X are associated with the floor height of the building. In this way, firstly, a formulaic guidance can be provided for the size design of the photovoltaic unit 10, thereby shortening the time required for the design; secondly, when the first module 110 is a non-photovoltaic component and the second module 120 includes a photovoltaic component, or the second module 120 includes a photovoltaic component and a non-photovoltaic component, by making the size of the first module 110 along the first direction smaller than half of the size of the second module 120 along the first direction, the area of ​​the photovoltaic component can be ensured as much as possible, thereby ensuring the power generation capacity of the photovoltaic unit 10, so that the photovoltaic unit 10 can generate enough electricity to supply power to the interior of the building; furthermore, the size of the photovoltaic unit 10 can be adapted to the floor height of the building, thereby improving the size uniformity of the photovoltaic units 10 on the building, thereby facilitating the assembly line production of the photovoltaic units 10, shortening the delivery cycle of the photovoltaic units 10, improving the production efficiency of the photovoltaic units 10, and reducing the production cost of the photovoltaic units 10.

[0041] On the other hand, by making the first module 110 a photovoltaic component or a non-photovoltaic component; the second module 120 includes a photovoltaic component and / or a non-photovoltaic component; that is, combining the photovoltaic component and the non-photovoltaic component and making a split design, in this way, the addition of the non-photovoltaic component can reduce the cost of the raw materials of the photovoltaic unit 10; secondly, the size of the photovoltaic component and the non-photovoltaic component can be reduced, the components of the photovoltaic component can be cut from the same raw material, and the components of the non-photovoltaic component can be cut from the same raw material, thereby improving the utilization rate of the raw materials for making the photovoltaic component and the non-photovoltaic component, and greatly reducing the production cost of the photovoltaic unit 10. Furthermore, the non-photovoltaic unit does not need to consider circuit connection and other issues, thereby simplifying the design of the supporting structure of the photovoltaic unit 10, thereby further reducing the production cost of the photovoltaic unit 10. In addition, the size of the photovoltaic component and the non-photovoltaic component is small, which can help improve the reliability of the photovoltaic component and the non-photovoltaic component itself, thereby improving the reliability of the photovoltaic unit 10.

[0042] In summary, the present application can improve the material utilization and manufacturing efficiency of the photovoltaic unit 10 while ensuring the power generation capacity of the photovoltaic unit, reduce the production cost of the photovoltaic unit 10, and improve the reliability of the photovoltaic unit 10.

[0043] In some of these embodiments, see Figure 2 The second module 120 includes a first sub-block 121 and a second sub-block 122 arranged at intervals along the first direction X, and the second sub-block 122 is located on the side of the first sub-block 121 away from the first module 110; the first sub-block 121 is a photovoltaic module, and the second sub-block 122 is a non-photovoltaic module. The size of the first sub-block 121 along the first direction X is B1; the size of the second sub-block 122 along the first direction X is B2; B1+B2=B; B2<1 / 2(A+B1).

[0044] Thus, on the one hand, the area of ​​the photovoltaic module can be guaranteed as much as possible, so that the photovoltaic unit 10 can generate enough electricity to power the interior of the building. On the other hand, the size of the photovoltaic module and the non-photovoltaic module can be further reduced, so that the utilization rate of the raw materials of the photovoltaic module and the non-photovoltaic module can be further improved, and the production cost of the photovoltaic unit 10 can be reduced. In addition, the reliability of the photovoltaic module and the non-photovoltaic module itself can be improved, so that the reliability of the photovoltaic unit 10 can be improved.

[0045] In some embodiments, a dimension B1 of the first sub-block 121 along the first direction X is 1130 mm to 2320 mm.

[0046] Furthermore, the dimension B1 of the first sub-block 121 along the first direction X may be 1185 mm, 1520 mm, 1730 mm, 2278 mm, etc., and may be designed according to the floor height H of the building.

[0047] In some embodiments, a dimension B2 of the second sub-block 122 along the first direction X is 800 mm to 1200 mm.

[0048] In some embodiments, a dimension A of the first module 110 along the first direction X is 780 mm to 1200 mm.

[0049] Furthermore, the dimension of the first module 110 along the first direction X may be 785 mm, 1185 mm, etc., and may be designed according to the floor height H of the building.

[0050] In some embodiments, the dimensions of the first module 110 and the second module 120 along the second direction Y are both L, and L is 600 mm to 1800 mm.

[0051] Furthermore, the dimension L of the first module 110 and the second module 120 along the second direction Y may be 1185 mm, 1385 mm, etc. The dimension L may be designed according to the width of the facade of the building.

[0052] See also Figures 3 to 5 In some of the embodiments, the non-photovoltaic component may be a laminated glass. Specifically, the non-photovoltaic component includes a plurality of laminated glasses, and an adhesive film is provided between any adjacent glasses.

[0053] As a result, the cost of raw materials constituting the photovoltaic curtain wall can be reduced, the material utilization rate of the photovoltaic unit 10 can be improved, and the production cost of the photovoltaic unit 10 can be reduced.

[0054] See also Figures 3 to 5 In one embodiment, the glass in the non-photovoltaic component is at least one of tinted glass and patterned glass.

[0055] Although the photovoltaic modules using colored glass can increase the aesthetics of the photovoltaic curtain wall, compared with the photovoltaic modules using transparent glass, the voltage of the photovoltaic modules using colored glass remains unchanged, but the current is greatly reduced, generally by more than 20%, and the power generation is also low. Therefore, the modules using colored and transparent glass cannot be connected in series, so the photovoltaic modules using colored glass need to be connected in series separately, which will increase the difficulty and complexity of wiring. In this embodiment, the glass in the non-photovoltaic module is at least one of tinted glass and embossed glass. In this way, not only can the photovoltaic unit 10 meet the aesthetic requirements of different colors, patterns, etc., but it can also facilitate the electrical connection between photovoltaic modules, reduce the length and complexity of the wiring, and thus reduce the difficulty of making and installing the photovoltaic unit.

[0056] See also Figures 3 to 5 In one embodiment, a release film with a pattern is attached to the outermost glass surface of the non-photovoltaic module.

[0057] Thus, the photovoltaic unit 10 can meet the aesthetic requirements of different pattern combinations.

[0058] See also Figures 3 to 5 In one embodiment, an LED display device is attached to the outermost glass surface of the non-photovoltaic module. In a specific example, the LED display device can be an LED lamp, an LED display screen, etc.

[0059] In one embodiment, there is a gap between the first module 110 and the second module 120, and the gap can be filled with sealant. The size of the gap can be designed according to actual needs.

[0060] Second, see Figures 3 to 5 An embodiment of the present application provides a photovoltaic system, comprising a plurality of photovoltaic units 10 in any of the above embodiments.

[0061] The photovoltaic system provided by the embodiment of the present application includes a plurality of photovoltaic units 10 described in any one of the first aspects, the photovoltaic unit 10 includes a first module 110 and a second module 120 arranged along a first direction X and aligned along a second direction Y, the size of the first module 110 along the first direction X is smaller than the size of the second module 120 along the first direction X, and the sum of the sizes of the first module 110 and the second module 120 along the first direction X is smaller than the floor height of the building; that is, the photovoltaic unit 10 is modularly designed, and the sizes of the first module 110 and the second module 120 in the photovoltaic unit 10 along the first direction X are positively correlated, and the sizes of the first module 110 and the second module 120 along the first direction X are associated with the floor height of the building. In this way, firstly, a formulaic guidance can be provided for the size design of the photovoltaic unit 10, thereby shortening the time required for design; secondly, when the first module 110 is a non-photovoltaic component and the second module 120 includes a photovoltaic component, or the second module 120 includes a photovoltaic component and a non-photovoltaic component, by making the size of the first module 110 along the first direction smaller than half of the size of the second module 120 along the first direction, the area of ​​the photovoltaic component can be guaranteed as much as possible, thereby ensuring the power generation capacity of the photovoltaic unit 10, so that the photovoltaic unit 10 can generate enough electricity to supply power to the interior of the building; furthermore, the size of the photovoltaic unit 10 can be adapted to the floor height of the building, thereby improving the size uniformity of the photovoltaic units 10 on the building, thereby facilitating the assembly line production of the photovoltaic unit 10, shortening the delivery cycle of the photovoltaic system, improving the production efficiency of the photovoltaic system, and reducing the production cost of the photovoltaic system.

[0062] On the other hand, by making the first module 110 of the photovoltaic unit 10 a photovoltaic component or a non-photovoltaic component; the second module 120 includes a photovoltaic component and / or a non-photovoltaic component; that is, combining the photovoltaic component and the non-photovoltaic component and making a split design, in this way, the addition of the non-photovoltaic component can reduce the cost of the raw materials of the photovoltaic unit 10; secondly, the size of the photovoltaic component and the non-photovoltaic component can be reduced, the components of the photovoltaic component can be cut from the same raw material, and the components of the non-photovoltaic component can be cut from the same raw material, thereby improving the utilization rate of the raw materials for making the photovoltaic component and the non-photovoltaic component, and greatly reducing the production cost of the photovoltaic system. Furthermore, the non-photovoltaic unit does not need to consider circuit connection and other issues, thereby simplifying the design of the supporting structure of the photovoltaic unit 10, thereby further reducing the production cost of the photovoltaic system. In addition, the size of the photovoltaic component and the non-photovoltaic component is small, which can help improve the reliability of the photovoltaic component and the non-photovoltaic component itself, thereby improving the reliability of the photovoltaic system.

[0063] In summary, the present application can improve the material utilization and manufacturing efficiency of the photovoltaic system while ensuring the power generation capacity of the photovoltaic system, reduce the production cost of the photovoltaic system, and improve the reliability of the photovoltaic system.

[0064] See also Figures 3 to 5 In some embodiments, a plurality of photovoltaic units 10 are installed on the facade of a building. The plurality of photovoltaic units 10 are arranged in an array along a first direction X and a second direction Y on the facade of the building. The first direction X is the direction from the ground to the top of the building, and the second direction Y is the width direction of the facade of the building.

[0065] Specifically, a plurality of photovoltaic units 10 can be installed on the facade of a building. By arranging the plurality of photovoltaic units 10 in an array along a first direction X and a second direction Y on the facade of the building, the first direction X is the direction from the ground to the top of the building, and the second direction Y is the width direction of the facade of the building. In this way, the area of ​​the facade of the building can be fully utilized, which can not only maintain the original functionality and safety of the building, but also improve the aesthetics of the building. In addition, under the condition of reasonable layout, more photovoltaic units 10 can be installed on the facade to increase the power generation of the photovoltaic system.

[0066] In some embodiments, a decorative line layer (not shown) may be disposed between two adjacent photovoltaic units 10 along the first direction X, and a gap may be provided between the photovoltaic unit 10 and the decorative line layer, and the gap may be filled with sealant.

[0067] Existing buildings increasingly use decorative line layers to decorate exterior walls. In this embodiment, a decorative line layer may be provided between two adjacent photovoltaic units 10 along the first direction X, so that there is a gap between the photovoltaic unit 10 and the decorative line layer, which facilitates the installation of the decorative line layer and the photovoltaic unit 10 and avoids interference between the two.

[0068] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A photovoltaic unit for use on the facade of a building; characterized in that: It comprises a first module and a second module arranged along a first direction, the first module is a photovoltaic component or a non-photovoltaic component; the second module comprises a photovoltaic component and / or a non-photovoltaic component; the size of the first module along the first direction is A; the size of the second module along the first direction is B; both ends of the first module along the second direction are aligned with both ends of the second module along the second direction; Among them, A<1 / 2B, A+B<H; H is the floor height of the building; the first direction and the second direction are perpendicular, the first direction is the direction from the ground to the top of the building, and the second direction is the width direction of the facade of the building.

2. The photovoltaic unit according to claim 1, characterized in that: The second module includes a first sub-block and a second sub-block spaced apart along a first direction, the second sub-block being located on a side of the first sub-block away from the first module; the first sub-block is the photovoltaic component, the second sub-block is the non-photovoltaic component, the size of the first sub-block along the first direction is B1; the size of the second sub-block along the first direction is B2; B1+B2=B; B2<1 / 2(A+B1).

3. The photovoltaic unit according to claim 2, characterized in that: A size B1 of the first sub-block along the first direction is 1130 mm to 2320 mm.

4. The photovoltaic unit according to claim 2, characterized in that: A dimension B2 of the second sub-block along the first direction is 800 mm to 1200 mm.

5. The photovoltaic unit according to claim 1, characterized in that: A dimension A of the first module along the first direction is 780 mm to 1200 mm.

6. The photovoltaic unit according to claim 1, characterized in that: The dimensions of the first module and the second module along the second direction are both L, and L is 600 mm to 1800 mm.

7. The photovoltaic unit according to claim 1, characterized in that: The non-photovoltaic component includes a plurality of stacked glasses, and an adhesive film is provided between any adjacent glasses.

8. The photovoltaic unit according to claim 7, characterized in that: The glass is at least one of tinted glass and patterned glass; Alternatively, a release film with a pattern is attached to the outermost glass surface of the non-photovoltaic module; Alternatively, an LED display device is attached to the outermost glass surface of the non-photovoltaic component.

9. A photovoltaic system, characterized in that: The method comprises a plurality of photovoltaic units according to any one of claims 1 to 8.

10. The photovoltaic system according to claim 9, characterized in that: The plurality of photovoltaic units are used to be installed on the facade of a building, and the plurality of photovoltaic units are arranged in an array along a first direction and a second direction on the facade of the building. The first direction is the direction from the ground to the top of the building, and the second direction is the width direction of the facade of the building.

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