Curved surface solar panel, photovoltaic array and solar system

Abstract

The embodiment of the utility model relates to the field of photovoltaic technology, and provides a curved surface solar panel, a photovoltaic array and a solar system. The curved-surface solar panel comprises a wave crest part and a wave trough part which are sequentially connected in the first direction. The curved-surface solar panel further comprises a power generation area provided with a power generation layer, a first non-power-generation area and a second non-power-generation area. The first non-power-generation area and the second non-power-generation area are located on the two opposite sides of the power generation area in the first direction respectively, and the upper portion of the first non-power-generation area is used for being in lap joint with the second non-power-generation area of the adjacent curved-surface solar panel. The width of the first non-power generation area in the first direction is defined as X1. The width of the second non-power generation area in the first direction is defined as X2. The thickness of the curved solar panel is defined as W. X1, X2 and W satisfy the following condition: X1 > = X2 + W. The curved-surface solar panel is beneficial to improving the overall power generation efficiency of a solar system using the curved-surface solar panel.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to a curved solar panel, a photovoltaic array and a solar energy system. Background Art

[0002] In existing solar energy systems that use curved solar panels, when the curved solar panels are installed, the power generation area of ​​the curved solar panels located below is easily partially blocked, which reduces the power generation efficiency of the partially blocked curved solar panels, thereby causing the overall power generation efficiency of the entire solar energy system to be reduced due to current limiting. Utility Model Content

[0003] In a first aspect, the present application provides a curved solar panel. The curved solar panel includes a crest portion and a trough portion connected in sequence along a first direction. The curved solar panel also includes a power generation area provided with a power generation layer and a first non-power generation area and a second non-power generation area. The first non-power generation area and the second non-power generation area are respectively located on opposite sides of the power generation area along the first direction, and the top of the first non-power generation area is used to overlap with the second non-power generation area of ​​the adjacent curved solar panel. The width of the first non-power generation area along the first direction is defined as X1. The width of the second non-power generation area along the first direction is defined as X2. The thickness of the curved solar panel is defined as W; X1, X2 and W satisfy: X1≥X2+W.

[0004] When the curved solar panels of the first aspect of the present application are installed along the first direction, at the overlapped position, the width X2 of the second non-power generation area of ​​the curved solar panel located above is smaller than the width X1 of the first non-power generation area of ​​the curved solar panel located below. In this way, it is beneficial to ensure that of the two adjacent curved solar panels in the first direction, the upper curved solar panel will not block the power generation area of ​​the lower curved solar panel, thereby facilitating the improvement of the overall power generation efficiency of the solar energy system using the curved solar panel.

[0005] In some embodiments, the first non-power generation area is located at the trough portion, and the second non-power generation area is located at the peak portion.

[0006] The second aspect of the present application provides a photovoltaic array. The photovoltaic array includes a plurality of curved solar panels provided in the first aspect of the present application. Along the first direction, the top of the first non-power generation area of ​​each curved solar panel overlaps with the second non-power generation area of ​​an adjacent curved solar panel to form a first overlap portion. The overlap width of the first overlap portion of any two adjacent curved solar panels along the first direction is defined as W1, and W1, X1 and X2 satisfy: W1≥(X1+X2) / 2.

[0007] The photovoltaic array of the second aspect of the present application has at least the same advantages as the curved solar panel of the first aspect. Moreover, W1, X1 and X2 satisfy: W1 ≥ (X1 + X2) / 2, which helps to ensure that the power generation layers at both ends of the curved solar panel in the first direction are not blocked.

[0008] In some embodiments, each curved solar panel further includes a third non-power generation area and a fourth non-power generation area. The third non-power generation area and the fourth non-power generation area are respectively located on opposite sides of the power generation area along the second direction, and the second direction is different from the first direction. The first non-power generation area, the third non-power generation area, the second non-power generation area and the fourth non-power generation area are sequentially connected and surround the power generation area. Along the second direction, the upper part of the third non-power generation area of ​​each curved solar panel overlaps with the fourth non-power generation area of ​​an adjacent curved solar panel to form a second overlap portion. The overlap width of the second overlap portions of any two adjacent curved solar panels along the second direction is defined as H1. The width of the third non-power generation area along the second direction is defined as X3; H1, X3 and W satisfy: H1≤X3+W.

[0009] In some embodiments, a standard angle between the photovoltaic array and the horizontal plane is defined as θ; an actual angle between each curved solar panel and the horizontal plane is defined as θ1; θ1 and θ satisfy: |θ1-θ|≤1°.

[0010] In some embodiments, the photovoltaic array further includes a plurality of voltage and current adjustment units, each of which is connected in series with a corresponding curved solar panel.

[0011] In some embodiments, multiple curved solar panels facing the same orientation are connected in series, and multiple curved solar panels facing different orientations are connected in parallel.

[0012] In some embodiments, the photovoltaic array further includes a positive junction box and a negative junction box, the positive pole of each curved solar panel is electrically connected to the positive junction box, and the negative pole of each curved solar panel is electrically connected to the negative junction box.

[0013] The third aspect of the present application provides a solar energy system. The solar energy system includes an energy storage device and a photovoltaic array. The photovoltaic array is electrically connected to the energy storage device to provide electrical energy to the energy storage device; wherein the photovoltaic array is the photovoltaic array of the second aspect of the present application.

[0014] The solar energy system of the third aspect of the present application has at least the same advantages as the photovoltaic array of the second aspect of the present application.

[0015] In some embodiments, the solar energy system also includes a controller, one end of which is electrically connected to the photovoltaic array, and the other end of which is electrically connected to the energy storage device and the power grid, respectively. The controller is used to control the photovoltaic array to provide electrical energy to the energy storage device and / or the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a solar energy system according to the first embodiment of the present application.

[0017] Figure 2 It is a schematic diagram of the installation surface of the curved solar panel in the solar energy system of one embodiment of the present application.

[0018] Figure 3 FIG. 1 is a side view of a curved solar panel according to an embodiment of the present application.

[0019] Figure 4 It is a schematic diagram of overlapping curved solar panels in a first direction according to an embodiment of the present application.

[0020] Figure 5 Schematic diagram of the actual angle between the curved solar panel and the horizontal surface according to an embodiment of the present application.

[0021] Figure 6 It is a three-dimensional diagram of a curved solar panel according to an embodiment of the present application.

[0022] Figure 7 It is a schematic diagram of overlapping curved solar panels in a second direction according to an embodiment of the present application.

[0023] Figure 8 This is a schematic diagram of an application scenario of a solar energy system according to the second embodiment of the present application.

[0024] Description of main component symbols:

[0025] Solar energy systems 100a, 100b

[0026] Photovoltaic array 10

[0027] The first photovoltaic module 10a

[0028] The second photovoltaic module 10b

[0029] Curved solar panel 11

[0030] Front panel 111

[0031] Backplane 112

[0032] Power generation layer 113

[0033] First non-power generation area 11a

[0034] The second non-power generation area 11b

[0035] The third non-power generation area 11c

[0036] Fourth non-power generation area 11d

[0037] Power Generation Area 11e

[0038] Light receiving surface 11f

[0039] Backlight 11g

[0040] Valley 11r

[0041] Peak 11p

[0042] Voltage and current adjustment unit 12

[0043] Positive junction box 13

[0044] Negative junction box 14

[0045] Energy storage device 20

[0046] Controller 30

[0047] Grid 200

[0048] First direction D1

[0049] Second direction D2

[0050] Third direction D3

[0051] Mounting surface S

[0052] First mounting surface S1

[0053] Second mounting surface S2

[0054] The third mounting surface S3

[0055] Fourth mounting surface S4

[0056] Level surface HS

[0057] Virtual Face VS

[0058] Sunlight DETAILED DESCRIPTION

[0059] Since the backlight surface of the curved solar panel is an uneven curved surface, it is difficult to ensure that the overlap area of ​​each curved solar panel is consistent with that of the adjacent curved solar panel when installing on the roof, so that the actual power generation area of ​​each curved solar panel is different. Therefore, as the sunshine time changes, when there is a certain angle between the sunlight and the plane of the curved solar panel, the power generation of each curved solar panel varies greatly, which ultimately leads to a decrease in the overall power generation efficiency of the entire solar system due to current limiting.

[0060] In the embodiments of the present application, "current limiting" refers to controlling the flow of current by electrical means to protect components in a solar energy system, improve efficiency, and maintain the stability of the solar energy system. Specifically, in a solar energy system, when the power generation efficiency of a solar panel among multiple solar panels connected in series decreases and the output current decreases, the overall output current of the entire solar energy system will decrease to prevent other components in the solar energy system (such as inverters, controllers, etc.) from being damaged due to excessive current.

[0061] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0062] like Figure 1 As shown, the solar energy system 100a of the first embodiment of the present application includes a photovoltaic array 10 and an energy storage device 20 electrically connected to the photovoltaic array 10. The photovoltaic array 10 is used to provide electrical energy to the energy storage device 20. The energy storage device 20 can store the electrical energy generated by the photovoltaic array 10 during the day so as to be used at night or when the photovoltaic array 10 is not generating electricity. The energy storage device 20 is, for example, a lithium-ion battery, but is not limited thereto.

[0063] Specifically, the photovoltaic array 10 includes a first photovoltaic assembly 10a, a second photovoltaic assembly 10b, a positive junction box 13 and a negative junction box 14. The first photovoltaic assembly 10a includes a plurality of curved solar panels 11 and a plurality of voltage and current adjustment units 12. In the first photovoltaic assembly 10a, the number of curved solar panels 11 and the number of voltage and current adjustment units 12 are the same, each voltage and current adjustment unit 12 is connected in series with a corresponding curved solar panel 11, and the plurality of voltage and current adjustment units 12 are connected in series with each other. In the first photovoltaic assembly 10a, the positive pole of each curved solar panel 11 and the positive pole of each voltage and current adjustment unit 12 are electrically connected to the positive junction box 13, and the negative pole of each curved solar panel 11 and the negative pole of each voltage and current adjustment unit 12 are electrically connected to the negative junction box 14.

[0064] The second photovoltaic assembly 10b has the same composition as the first photovoltaic assembly 10a. The second photovoltaic assembly 10b includes a plurality of curved solar panels 11 and a plurality of voltage and current adjustment units 12. In the second photovoltaic assembly 10b, the number of curved solar panels 11 and the number of voltage and current adjustment units 12 are the same, each voltage and current adjustment unit 12 is connected in series with a corresponding curved solar panel 11, and the plurality of voltage and current adjustment units 12 are connected in series with each other. In the second photovoltaic assembly 10b, the positive pole of each curved solar panel 11 and the positive pole of each voltage and current adjustment unit 12 are electrically connected to the positive junction box 13, and the negative pole of each curved solar panel 11 and the negative pole of each voltage and current adjustment unit 12 are electrically connected to the negative junction box 14.

[0065] In some embodiments, the voltage and current adjustment unit 12 includes a charge controller. The charge controller has the function of adjusting the voltage and current of the curved solar panel 11 connected in parallel therewith to prevent overcharging and over-discharging. In addition, the charge controller also has the function of preventing the current in the energy storage device 20 from flowing back to the curved solar panel 11 at night or when there is insufficient light. Furthermore, the charge controller can also use the maximum power point tracking technology to optimize the conversion of electric energy from the curved solar panel 11 to the energy storage device 20.

[0066] The arrangement of the positive junction box 13 and the negative junction box 14 enables the current (DC) input lines of the multiple curved solar panels 11 in the photovoltaic array 10 to be brought together, and then the current is transmitted to the energy storage device 20 through a single line. In this way, the wiring can be simplified, the complexity of wiring can be reduced, and the installation and maintenance of the solar energy system 100a can be simplified. In addition, fuses or circuit breakers can be arranged in the positive junction box 13 and the negative junction box 14 to prevent overcurrent; and if a problem occurs in a certain circuit, the corresponding fuse will blow, thereby protecting the entire solar energy system 100a from damage. In addition, the positive junction box 13 and the negative junction box 14 also have waterproof and dustproof functions, which can protect the internal electrical components from the influence of harsh environmental conditions and increase the safety of the system.

[0067] In some embodiments, all the curved solar panels 11 in the first photovoltaic assembly 10a face the same orientation, and all the curved solar panels 11 in the second photovoltaic assembly 10b face the same orientation, but the curved solar panels 11 in the first photovoltaic assembly 10a and the second photovoltaic assembly 10b face different orientations. That is, the curved solar panels 11 in the same photovoltaic assembly are connected in series and face the same orientation; while the curved solar panels 11 in different photovoltaic assemblies are connected in parallel and face different orientations. The above orientation can be any one of the orientations of east, west, south, north, southeast, northeast, southwest, northwest, etc.

[0068] like Figure 2 As shown, the solar energy system 100a is applied to a home power supply scenario, and the installation surface S on the roof of the building includes a first installation surface S1 facing east, a second installation surface S2 facing west, a third installation surface S3 facing south, and a fourth installation surface S4 facing north. The first photovoltaic assembly 10a and the second photovoltaic assembly 10b can be installed on any two different ones of the four installation surfaces S. Figure 1 In the illustrated embodiment, the photovoltaic array 10 includes two groups of photovoltaic components. In other embodiments, the number of photovoltaic components in the photovoltaic array 10 is not limited to the above.

[0069] like Figure 3As shown, the curved solar panel 11 includes a crest portion 11p and a trough portion 11r sequentially connected along a first direction D1. Specifically, the curved solar panel 11 includes a front panel 111, a back panel 112, and a power generation layer 113 sandwiched between the front panel 111 and the back panel 112. The back panel 112, the power generation layer 113, and the front panel 111 are sequentially stacked along a third direction D3. The first direction D1 is perpendicular to the third direction D3.

[0070] For the convenience of description, the first direction D1 is also referred to as the left-right direction, and the third direction D3 is referred to as the up-down direction. The negative direction of the first direction D1 points to the positive direction of the first direction D1, which is the direction from left to right. The negative direction of the third direction D3 points to the positive direction of the third direction D3, which is the direction from bottom to top.

[0071] More specifically, the curved solar panel 11 includes a light-receiving surface 11f and a backlight surface 11g opposite to each other. The side where the light-receiving surface 11f is located is used to receive sunlight L. The front panel 111 is located on the side where the light-receiving surface 11f is located to protect the light-receiving surface 11f of the power generation layer 113. The front panel 111 is, for example, a light-transmitting curved glass, but is not limited thereto. The back panel 112 is located on the side where the backlight surface 11g is located to support and protect the side of the backlight surface 11g of the power generation layer 113. The back panel 112 is, for example, a flexible back panel or curved glass, but is not limited thereto. The power generation layer 113 includes a plurality of cells electrically connected to each other. The curved solar panel 11 also includes an adhesive film between the front panel 111 and the power generation layer 113 and an adhesive film between the back panel 112 and the power generation layer 113, but is not limited thereto.

[0072] The curved solar panel 11 includes a power generation area 11e and a non-power generation area. The power generation area 11e is provided with a power generation layer 113, and the non-power generation area is not provided with a power generation layer 113. Specifically, the non-power generation area includes a first non-power generation area 11a and a second non-power generation area 11b. Along the first direction D1, the first non-power generation area 11a and the second non-power generation area 11b are respectively located on opposite sides of the power generation area 11e. When the curved solar panel 11 is installed, along the first direction D1, the upper part of the first non-power generation area 11a of each curved solar panel 11 is used to overlap with the second non-power generation area 11b of the adjacent curved solar panel 11.

[0073] Along the first direction D1, the width of the first non-power generation area 11a is X1. Along the first direction D1, the width of the second non-power generation area 11b is X2. The thickness of the curved solar panel 11 is W. Among them, X1, X2 and W satisfy: X1≥X2+W. In this way, if Figure 4As shown, when the curved solar panels 11 of the embodiment of the present application are installed in order from left to right, at the overlapping position, the width X2 of the second non-power generation area 11b of the curved solar panel 11 located on the upper side is smaller than the width X1 of the first non-power generation area 11a of the curved solar panel 11 located on the lower side, thereby helping to ensure that among the two adjacent curved solar panels 11 in the first direction D1, the curved solar panel 11 on the right side will not block the power generation layer 113 of the curved solar panel 11 on the left side and affect the overall power generation efficiency.

[0074] Furthermore, the first non-power generation area 11a of each curved solar panel 11 overlaps the second non-power generation area 11b of the adjacent curved solar panel 11 to form a first overlap portion. The overlap width of the first overlap portion of any two adjacent curved solar panels 11 along the first direction D1 is defined as W1. W1, X1 and X2 satisfy: W1≥(X1+X2) / 2. In this way, it is helpful to ensure that when overlapping along the first direction D1, the power generation layer 113 at both ends of the curved solar panel 11 in the first direction D1 will not be blocked.

[0075] Figure 3 and Figure 4 In the illustrated embodiment, the curved solar panel 11 includes two crests 11p and two troughs 11r. Along the first direction D1, each crest 11p is alternately connected with a trough 11r in sequence. Along the first direction D1, one of the two ends of the curved solar panel 11 is a crest 11p and the other is a trough 11r. The first non-power generation area 11a is located in the trough-shaped end of the curved solar panel 11, and the second non-power generation area 11b is located in the crest-shaped end of the curved solar panel 11. In other words, the first non-power generation area 11a is located in the trough 11r of the curved solar panel 11, and the second non-power generation area 11b is located in the crest 11p of the curved solar panel 11. In this way, the two adjacent curved solar panels 11 are buckled and overlapped in the left-right direction, which is conducive to improving the overall structural stability and avoiding displacement or damage caused by environmental factors (such as wind and rain).

[0076] In some embodiments, in order to ensure that the actual power generation of different curved solar panels 11 is consistent, it is also necessary to ensure that the inclination angle of each curved solar panel 11 is consistent. Specifically, the actual power generation P = voltage V × current I = irradiation HA × light receiving area S × conversion efficiency K1 × system efficiency K. Figure 5As shown, for the case where the sunlight L is incident on the curved solar panel 11 perpendicular to the horizontal surface HS, the standard angle between the photovoltaic array 10 and the horizontal surface HS is θ, and the actual angle between the curved solar panel 11 and the horizontal surface HS is θ1. Then, the difference between the light receiving area of ​​the curved solar panel 11 and the standard curved solar panel is |cosθ1-cosθ|×S. Therefore, the greater the difference between the actual angle between the curved solar panel 11 and the horizontal surface HS and the standard angle, the greater the difference in the light receiving area and the greater the difference in the power generation.

[0077] In some embodiments, after each curved solar panel 11 is installed, a level meter is used to determine whether the difference between the actual angle between the curved solar panel 11 and the level surface HS and the standard angle satisfies |θ1-θ|≤1°, but the present invention is not limited thereto.

[0078] It should be noted that the above standard angle is the specification angle of the photovoltaic array 10, and the specification angle is a constant value of the design. In addition, the water level surface HS is a theoretical reference surface, which is an equipotential surface of the earth's gravity field. On the water level surface HS, the gravitational potential energy of any two points is equal, which means that theoretically water will not flow on this surface.

[0079] also, Figure 5 The water level surface HS in FIG. 1 is only for illustration. It can be understood that since the gravity field of the earth is affected by the uneven distribution of the earth's own mass, the water level surface HS is not a completely flat surface.

[0080] exist Figure 5 In the illustrated embodiment, each crest portion 11p and each trough portion 11r extend in the second direction D2. The first direction D1, the second direction D2, and the third direction D3 are perpendicular to each other. The cross-section of each crest portion 11p and each trough portion 11r perpendicular to the second direction D2 is semicircular. The plane where the center of the semicircle of each crest portion 11p and each trough portion 11r lies constitutes a virtual surface VS parallel to the screen surface constructed in the first direction D1 and the second direction D2. The actual angle between the curved solar panel 11 and the water level surface HS is the angle between the virtual surface VS and the water level surface HS.

[0081] like Figure 6 As shown, the curved solar panel 11 also includes a third non-power generation area 11c and a fourth non-power generation area 11d. The third non-power generation area 11c and the fourth non-power generation area 11d are respectively located on opposite sides of the power generation area 11e along the second direction D2. The first non-power generation area 11a, the third non-power generation area 11c, the second non-power generation area 11b and the fourth non-power generation area 11d are sequentially connected and surround the power generation area 11e. The upper part of the third non-power generation area 11c of the curved solar panel 11 is used to overlap with the fourth non-power generation area 11d of an adjacent curved solar panel 11 in the second direction D2. It should be noted that for the convenience of description, Figure 6 The back plate 112 is omitted.

[0082] like Figure 7 As shown, when multiple curved solar panels 11 are installed on the installation surface S of the roof, in the first direction D1, each row of curved solar panels 11 is installed in order from left to right; in the second direction D2, multiple rows of curved solar panels 11 are installed row by row in order from bottom to top, that is, after the lower row of curved solar panels 11 is installed, the upper row of curved solar panels 11 is installed.

[0083] Specifically, the third non-power generation area 11c of each curved solar panel 11 overlaps the fourth non-power generation area 11d of the adjacent curved solar panel 11 to form a second overlap portion. The overlap width of the second overlap portion of any two adjacent curved solar panels 11 along the second direction D2 is defined as H1. Along the second direction D2, the width of the third non-power generation area 11c is X3. H1, X3 and the thickness W of the curved solar panel 11 satisfy: H1≤X3+W. In this way, it is beneficial to ensure that when two adjacent curved solar panels 11 overlap in the second direction D2, the curved solar panel 11 located above will not block or shade the power generation layer 113 of the curved solar panel 11 located below and affect the power generation efficiency of the overall solar system 100a. In addition, it is also beneficial to avoid the situation where a curved solar panel 11 is locally overheated due to the hot spot effect, resulting in dissolution and stratification of the adhesive film.

[0084] The following specifically describes the installation principle of the solar energy system 100a according to the embodiment of the present application.

[0085] First, on the same installation surface S, all the curved solar panels 11 are installed in series, and all the curved solar panels 11 on different installation surfaces S are installed in parallel.

[0086] Second, each row of curved solar panels 11 is installed in a sequence from left to right in the first direction D1; and multiple rows of curved solar panels 11 are installed in a sequence from bottom to top in the second direction D2.

[0087] Third, when installing from left to right, along the first direction D1, the overlap width W1 of any two adjacent curved solar panels 11 at the overlap, the width X1 of the first non-power generation area 11a, and the width X2 of the second non-power generation area 11b must satisfy: W1≥(X1+X2) / 2, to ensure that the left and right overlaps will not overlap the power generation layer 113, causing shading of the battery cells and affecting the power generation. In addition, because the curved solar panel is curved, it is difficult to ensure that the width of the first non-power generation area 11a is equal to the width of the second non-power generation area 11b during design. When following the installation principle from left to right, if the width of the first non-power generation area 11a ≤ the width of the second non-power generation area 11b, the power generation layer 113 will also be blocked, so it is necessary to further satisfy X1≥X2+W to ensure that the battery cells of the curved solar panel 11 on the left are not blocked.

[0088] Fourth, after installing a curved solar panel 11, use a level to determine whether the difference between the actual angle between the curved solar panel 11 and the level surface HS and the standard angle satisfies |θ1-θ|≤1°. If not, adjust the angle of the curved solar panel 11 until it meets the requirement.

[0089] Fifth, along the second direction D2, the overlapping width H1 of two adjacent curved solar panels 11 at the overlapping point, the width X3 of the third non-power generation area 11c and the thickness W of the curved solar panel 11 satisfy: H1≤X3+W; otherwise, the position needs to be adjusted to ensure that the upper and lower overlaps will not block or shadow the cells of the lower curved solar panel 11, affecting the power generation capacity. At the same time, it is also helpful to avoid the situation where a curved solar panel 11 is locally overheated due to the hot spot effect, resulting in dissolution and stratification of the adhesive film.

[0090] Sixth, after installing the curved solar panel 11, Figure 1 As shown in the connection circuit, the power generation area 11e of the curved solar panel 11 needs to be shielded when connecting the circuit to prevent the risk of electric shock.

[0091] In summary, the solar energy system of the embodiment of the present application is conducive to solving the problem of affecting the overall power generation efficiency of the solar energy system due to partial shading of the curved solar panels when overlapping by designing the size of the non-power generation area of ​​the curved solar panels and the thickness of the curved solar panels. In some embodiments, by setting the above installation principles and cooperating with the voltage and current adjustment unit, the system efficiency of the curved solar panels installed on the roof can be effectively improved by about 30%.

[0092] like Figure 8As shown, the difference between the solar energy system 100b of the second embodiment of the present application and the solar energy system 100a of the first embodiment is that the solar energy system 100b further includes a controller 30, one end of the controller 30 is electrically connected to the photovoltaic array 10, and the other end is electrically connected to the energy storage device 20 and the power grid 200. The controller 30 is used to control the photovoltaic array 10 to provide electrical energy to the energy storage device 20 and / or the power grid 200.

[0093] It is understandable that the installation principles of the solar energy system 100a described above are also applicable to the solar energy system 100b.

[0094] Specifically, the solar energy system 100a is an off-grid system and can be self-generated and automatic. That is, the solar energy system 100a can operate independently without being connected to the public power grid 200. In addition, the solar energy system 100a can automatically manage the power generation and storage process without human intervention. For example, when the electric energy generated by the curved solar panels 11 in the photovoltaic array 10 exceeds the current consumption of the household, the solar energy system 100a will automatically store the excess electric energy in the energy storage device 20. When the electric energy generated by the curved solar panels 11 in the photovoltaic array 10 is insufficient to meet the demand, the solar energy system 100a will automatically draw electricity from the energy storage device 20 for household use.

[0095] In addition, the solar energy system 100b is a grid-connected system. In addition to being able to generate electricity automatically, the solar energy system 100b can also connect surplus electricity to the grid. That is, in addition to being self-sufficient for household loads, the solar energy system 100b can also transmit surplus electricity to the public grid 200. The solar energy system 100b has the possibility of contributing electricity to the grid 200.

[0096] The above implementation modes are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred implementation modes, a person skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A curved solar panel, comprising crests and troughs connected in sequence along a first direction, characterized in that: The curved solar panel also includes: A power generation area having a power generation layer; and A first non-power generation area and a second non-power generation area are respectively located on opposite sides of the power generation area along the first direction, and the upper portion of the first non-power generation area is used to overlap with the second non-power generation area of ​​the adjacent curved solar panel; Define the width of the first non-power generation area along the first direction as X1; Define the width of the second non-power generation area along the first direction as X2; Define the thickness of the curved solar panel as W; X1, X2 and W satisfy: X1≥X2+W.

2. The curved solar panel according to claim 1, characterized in that: The first non-power generation area is located at the trough portion, and the second non-power generation area is located at the peak portion.

3. A photovoltaic array, characterized in that: Comprising a plurality of curved solar panels as claimed in claim 1 or 2; Along the first direction, the upper portion of the first non-power generation area of ​​each curved solar panel overlaps with the second non-power generation area of ​​an adjacent curved solar panel to form a first overlap portion; The overlapping width of the first overlapping portions of any two adjacent curved solar panels along the first direction is defined as W1, and W1, X1 and X2 satisfy: W1≥(X1+X2) / 2.

4. The photovoltaic array according to claim 3, characterized in that: Each of the curved solar panels further comprises a third non-power generation area and a fourth non-power generation area, wherein the third non-power generation area and the fourth non-power generation area are respectively located on opposite sides of the power generation area along a second direction, wherein the second direction is different from the first direction, and the first non-power generation area, the third non-power generation area, the second non-power generation area and the fourth non-power generation area are sequentially connected and surround the power generation area; Along the second direction, the upper portion of the third non-power generation area of ​​each curved solar panel overlaps with the fourth non-power generation area of ​​an adjacent curved solar panel to form a second overlap portion; The overlapping width of the second overlapping portions of any two adjacent curved solar panels along the second direction is defined as H1; Define the width of the third non-power generation area along the second direction as X3; The H1, the X3 and the W satisfy: H1≤X3+W.

5. The photovoltaic array according to claim 4, characterized in that: The standard angle between the photovoltaic array and the water level is defined as θ; Define the actual angle between each curved solar panel and the water level surface as θ1; The θ1 and the θ satisfy: |θ1-θ|≤1°.

6. The photovoltaic array according to any one of claims 3 to 5, characterized in that: The photovoltaic array further includes a plurality of voltage and current adjustment units, each of which is connected in series with a corresponding curved solar panel.

7. The photovoltaic array according to claim 6, characterized in that: A plurality of the curved solar panels facing the same orientation are connected in series, and a plurality of the curved solar panels facing different orientations are connected in parallel.

8. The photovoltaic array according to claim 6, characterized in that: The photovoltaic array further includes a positive junction box and a negative junction box. The positive pole of each curved solar panel is electrically connected to the positive junction box, and the negative pole of each curved solar panel is electrically connected to the negative junction box.

9. A solar energy system, characterized in that: include: Energy storage devices; as well as a photovoltaic array, electrically connected to the energy storage device, for providing electrical energy to the energy storage device; Wherein, the photovoltaic array is the photovoltaic array as described in any one of claims 3 to 8.

10. The solar energy system according to claim 9, characterized in that: The solar energy system also includes a controller, one end of which is electrically connected to the photovoltaic array, and the other end of which is electrically connected to the energy storage device and the power grid respectively. The controller is used to control the photovoltaic array to provide electrical energy to the energy storage device and / or the power grid.

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