Photovoltaic system and laying method for photovoltaic modules

Abstract

The present application relates to the technical field of photovoltaics, and provides a photovoltaic system and a laying method for photovoltaic modules. The photovoltaic system comprises: a plurality of profiled sheets which are tiled together; and a plurality of photovoltaic modules fixed on the profiled sheets. A first edge of any photovoltaic module is fixed on the profiled sheet; the coverage width of each profiled sheet is w; the shape of any photovoltaic module is rectangular, and in a direction parallel to the first edge, the first distance between two adjacent photovoltaic modules is c; the length of any first edge is b; and n×w / 2=b / 2+c / 2. In the present application, only by half of the total coverage width of an integer number of profiled sheets, half of the length of the first edge, and half of the first distance between two adjacent photovoltaic modules satisfying the equation, direct modulus matching between the profiled sheet and the photovoltaic module can be achieved, without a guide rail, thereby reducing the weight of the photovoltaic system and reducing the cost of the photovoltaic system; moreover, the application range is wide.

Description

Photovoltaic system and photovoltaic module laying method

[0001] This application claims priority to the Chinese patent application filed with the Patent Office of China on August 28, 2023, with application number 202311091663.4 and invention name “A photovoltaic system and a method for laying photovoltaic modules”, and the Chinese patent application filed with the Patent Office of China on August 28, 2023, with application number 202322320269.5 and invention name “A photovoltaic system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of photovoltaic technology, and in particular to a photovoltaic system and a method for laying photovoltaic modules. Background Art

[0003] Installing photovoltaic modules on profiled boards to form a photovoltaic system can expand the application environment of photovoltaic modules, etc., and therefore has a broader prospect.

[0004] In current photovoltaic systems, guide rails are provided between photovoltaic modules and profiled plates to secure the photovoltaic modules on the guide rails.

[0005] However, providing guide rails will increase the weight of the photovoltaic system on the one hand, and increase the cost of the photovoltaic system on the other hand.

[0006] Application Contents

[0007] The present application provides a photovoltaic system and a method for laying photovoltaic modules, aiming to solve the problem of heavy weight and high cost of existing photovoltaic systems.

[0008] In a first aspect of the present application, a photovoltaic system is provided, comprising:

[0009] Several corrugated plates spliced ​​together;

[0010] and a plurality of photovoltaic modules fixed on the profiled plate; the first side of any photovoltaic module is fixed on the profiled plate;

[0011] The covering width of each of the profiled plates is w; the shape of any of the photovoltaic modules is rectangular, and the first distance between two adjacent photovoltaic modules in a direction parallel to the first side is c; the length of any of the first sides is b;

[0012] n×w / 2=b / 2+c / 2, c≥0, n is a positive integer.

[0013] In an embodiment of the present application, in the photovoltaic system, nw / 2 is half of the total coverage width of an integer number of corrugated plates, b / 2 is half of the length of the first side, and c / 2 is half of the first distance between two adjacent photovoltaic modules in a direction parallel to the first side. In the photovoltaic system, in a direction parallel to the first side, it appears periodically with half of the first side and half of the first distance between two adjacent photovoltaic modules. The above formula represents that half of the total coverage width of an integer number of corrugated plates is equal to the sum of half of the length of the first side of a photovoltaic module and half of the first distance between two adjacent photovoltaic modules, thereby achieving the relative position of the corrugated plates and the photovoltaic modules remaining unchanged, that is, each of the above nw / 2s meets the direct modulus matching requirements of each period. Therefore, the present application achieves direct modular matching between the profiled sheets and the photovoltaic modules simply by satisfying the aforementioned equations: half the total coverage width of the integral number of profiled sheets, half the length of the first side, and half the first distance between two adjacent photovoltaic modules in a direction parallel to the first side. Therefore, there is no need to provide additional guide rails between the photovoltaic modules and the profiled sheets, which reduces both the weight and cost of the photovoltaic system. Furthermore, modular matching can be achieved regardless of the number of connection points on the photovoltaic module or the distribution of the connection points, thus providing a wide range of applications.

[0014] Optionally, a first side of any photovoltaic module has a plurality of connection points; any photovoltaic module is fixed to the profiled plate through the connection points; a perpendicular bisector of the coverage width of any profiled plate is L1; a sideline of any coverage width is L2; ​​and L2 is parallel to L1;

[0015] On the surface of the profiled plate close to the photovoltaic assembly, the orthographic projection of each connection point falls on the orthographic projection of one of L1 or L2.

[0016] The exact positions of L2 and L1 of the corrugated sheet have been determined when ensuring the modular matching between the corrugated sheet and the photovoltaic module. There is no need to determine the installation position here. Setting the connection point at the aforementioned position can improve the installation efficiency and accuracy of the photovoltaic module. Moreover, setting the connection point at the aforementioned position makes the photovoltaic module more stable and uniform in the limiting effect of the corrugated sheet, and has better ability to withstand subsequent trampling, wind blowing, etc. For the corrugated sheet, the above-mentioned connection effect has a more uniform distribution of the reaction force of the corrugated sheet, which has less impact on the mechanical properties of the corrugated sheet.

[0017] Optionally, one of the photovoltaic components is covered on at least one side rib of the profiled plate.

[0018] The side ribs of the corrugated plate are the edge lines of the corrugated plate. A photovoltaic module is covered on at least one side rib of the corrugated plate, which indicates that a photovoltaic module spans at least one corrugated plate, or the side length of the first side of a photovoltaic module is greater than or equal to the size of the corrugated plate in the direction of the first side, that is, a photovoltaic module requires at least one corrugated plate for support, and thus the supporting force shared by each corrugated plate is smaller and more uniform, and the supporting effect on the photovoltaic module is better.

[0019] Optionally, each of the two first sides of any photovoltaic module has two connection points; and each of the photovoltaic modules is fixed to the profiled plate via four of the connection points.

[0020] For any of the first sides: the distances between the two endpoints of the first side and their adjacent connection points are both b1, and the distance between the two connection points is b2;

[0021] n1×w / 2=b2 / 2, n2×w / 2=b1+c / 2, where c≥0, n1 and n2 are both positive integers, and n1+n2=n.

[0022] n1w / 2 is half of the total coverage width of n1 integer corrugated sheets, b2 / 2 is half of the distance between the two connection points, that is, when the connection points are set as described above, in the photovoltaic system, half of the total coverage width of n1 integer corrugated sheets is equal to half of the distance between the two connection points. n2w / 2 is half of the total coverage width of n2 integer corrugated sheets, b1+c / 2 is the sum of the distance between the two end points of the first side and the adjacent connection points, and half of the first distance between two adjacent photovoltaic modules in a direction parallel to the first side, that is, in the photovoltaic system, half of the total coverage width of n2 integer corrugated sheets is equal to the distance between the two end points of the first side and the adjacent connection points, and half of the first distance between two adjacent photovoltaic modules in a direction parallel to the first side. The period of half the first side and half of the first distance between two adjacent photovoltaic modules is split into half of the distance between the two connection points on the first side. This sub-period, as well as the sub-period of the distance between the two endpoints of the first side and the adjacent connection points, and half of the first distance between two adjacent photovoltaic components in the direction parallel to the first side, the sum of the two sub-periods, in the photovoltaic system, in the direction parallel to the first side, these two sub-periods appear periodically in sequence, achieving half of the distance between the two connection points in the corrugated board and the photovoltaic component, as well as the distance between the two endpoints of the first side and the adjacent connection points, and half of the first distance between two adjacent photovoltaic components in the direction parallel to the first side. The relative positions remain unchanged, further meeting the requirements of direct modulus matching for each period.

[0023] Optionally, any of the photovoltaic components includes a first side and a second side that intersect; the length of the first side is equal to the length of the second side; or the length of the first side is not equal to the length of the second side.

[0024] A square photovoltaic module is one in which the length of the first side is equal to the length of the second side, and a rectangular photovoltaic module is one in which the length of the first side is not equal to the length of the second side. The photovoltaic system of the present application is applicable to both square photovoltaic modules and rectangular photovoltaic modules.

[0025] Optionally, the length of the first side is greater than the length of the second side; 1500mm≥w≥300mm, 3000mm≥b≥600mm.

[0026] The long side of the photovoltaic module is fixed on the corrugated board, and the photovoltaic module is laid horizontally. The value range of the first side length b of the currently commonly used photovoltaic module and the value range of the coverage width w of the corrugated board correspond to the above ranges respectively. That is to say, in this application, when the photovoltaic module is laid horizontally, it is applicable to the currently commonly used photovoltaic modules and corrugated boards.

[0027] Optional, 10≥n≥2.

[0028] That is, when the photovoltaic modules are laid horizontally, half of the total coverage width of 2 to 10 corrugated plates is equal to the sum of half the length of the first side of a photovoltaic module and half the first distance between two adjacent photovoltaic modules. When n>10, the coverage width of each corrugated plate is too narrow, and the number of corrugated plates corresponding to one photovoltaic module is large, so the installation cost of the corrugated plates is high. When n is 1, after the photovoltaic modules and the corrugated plates are directly matched in modularity, the gap between adjacent photovoltaic modules is large, resulting in a decrease in installed capacity. Therefore, 10≥n≥2, the number of corrugated plates corresponding to one photovoltaic module is small, so the installation cost of the corrugated plates is low, and after the photovoltaic modules and the corrugated plates are directly matched in modularity, the gap between adjacent photovoltaic modules is small, which can increase the installed capacity.

[0029] Optionally, 0.3b≥b1≥0.15b.

[0030] The larger the value of b1, the closer the connection point is to the center of the PV module; the smaller the value of b1, the closer the connection point is to the edge of the PV module. When the PV modules are laid horizontally, when b1 is less than 0.15b, the distance between the connection point and the edge of the PV module is close. If the distance between the two connection points is too large, it will cause excessive deflection of the PV module. When b1 is greater than 0.3b, the connection point is close to the center of the PV module, the distance between the two connection points is too small, the overhang distance of the PV module edge is too large, the stability is poor, and the limiting effect on the edge of the PV module is insufficient. Therefore, when the value of b1 is between 0.15b and 0.3b, the connection point is set at an optimal position, the PV module is better stressed, and the resistance to wind and trampling is stronger.

[0031] Optionally, 3 / 14≤n2 / (2n1)≤3 / 4.

[0032] When the photovoltaic modules are laid horizontally, in the photovoltaic system, 3 / 14≤n2 / (2n1)≤3 / 4 can ensure that the first distance between two adjacent photovoltaic modules is as small as possible, while ensuring the direct module matching between the photovoltaic modules and the corrugated boards, thereby increasing the installed capacity. Moreover, 3 / 14≤n2 / (2n1)≤3 / 4 is achieved under the premise of 0.3b≥b1≥0.15b. Therefore, the photovoltaic modules have better stress resistance and stronger resistance to wind and trampling.

[0033] Optionally, n1=n2=1, n1+n2=2, 2w=b+c, ​​b2=w.

[0034] When PV modules are laid horizontally, half the total coverage width of two profiled sheets equals half the length of the first side of a PV module and half the first distance between two adjacent PV modules, further satisfying the modular matching requirements for each cycle. Furthermore, half the distance between two connection points equals half the coverage width of a profiled sheet. Each profiled sheet has a larger coverage width, and one PV module requires two or three profiled sheets, a smaller number. This reduces the installation cost of the profiled sheets. Furthermore, direct modular matching between PV modules and profiled sheets reduces the gap between adjacent PV modules, allowing for a larger installed capacity.

[0035] Optionally, n1=2, n2=1, n1+n2=3, 3w=b+c, ​​b2=2w.

[0036] When PV modules are laid horizontally, half the total coverage width of the three profiled sheets is equal to the sum of half the length of the first side of a PV module and half the first distance between two adjacent PV modules, further satisfying the modular matching requirements for each cycle. Furthermore, half the distance between two connection points is equal to half the coverage width of the two profiled sheets. Each profiled sheet has a larger coverage width, and one PV module requires three or four profiled sheets, a smaller number. This reduces the installation cost of the profiled sheets. Furthermore, after direct modular matching between PV modules and profiled sheets, the gaps between adjacent PV modules are smaller, resulting in a larger installed capacity.

[0037] Optionally, the length of the first side is smaller than the length of the second side; 1500mm≥w≥300mm, 2000mm≥b≥600mm.

[0038] The short side of the photovoltaic module is fixed on the corrugated board, and the photovoltaic module is laid vertically. The value range of the first side length b of the currently commonly used photovoltaic module and the value range of the coverage width w of the corrugated board correspond to the above ranges respectively. That is to say, in this application, when the photovoltaic module is laid vertically, it is applicable to the currently commonly used photovoltaic modules and corrugated boards.

[0039] Optional, 6≥n≥2.

[0040] That is, when the photovoltaic modules are laid vertically, half of the total coverage width of 2 to 6 corrugated plates is equal to the sum of half of the length of the first side of a photovoltaic module and half of the first distance between two adjacent photovoltaic modules. When n>6, the coverage width of each corrugated plate is too narrow, and the number of corrugated plates corresponding to one photovoltaic module is large, so the installation cost of the corrugated plates is high. When n is 1, after the photovoltaic modules and the corrugated plates are directly matched in modularity, the gap between adjacent photovoltaic modules is large, resulting in a decrease in installed capacity. Therefore, when 6≥n≥2, the number of corrugated plates corresponding to one photovoltaic module is small, so the installation cost of the corrugated plates is low, and after the photovoltaic modules and the corrugated plates are directly matched in modularity, the gap between adjacent photovoltaic modules is small, which can increase the installed capacity.

[0041] Optionally, 0.25b≥b1≥0.1b.

[0042] The larger the value of b1, the closer the connection point is to the center of the PV module; the smaller the value of b1, the closer the connection point is to the edge of the PV module. When the PV modules are laid vertically, when b1 is less than 0.1b, the distance between the connection point and the edge of the PV module is close, and the distance between the two connection points is too large, which will cause excessive deflection of the PV module. When b1 is greater than 0.25b, the connection point is close to the center of the PV module, the distance between the two connection points is too small, the overhang distance of the PV module edge is too large, the stability is poor, and the limiting effect on the edge of the PV module is insufficient. Therefore, when the value of b1 is between 0.1b and 0.25b, the connection point is set at an optimal location, the PV module is better stressed, and the resistance to wind and trampling is stronger.

[0043] Optional, 1 / 8≤n2 / (2n1)≤1 / 2.

[0044] When photovoltaic modules are laid vertically, in the photovoltaic system, 1 / 8≤n2 / (2n1)≤1 / 2 can ensure that the first distance between two adjacent photovoltaic modules is as small as possible, while ensuring direct module matching between the photovoltaic modules and the corrugated boards, thereby increasing the installed capacity. Moreover, 1 / 8≤n2 / (2n1)≤1 / 2 is achieved under the premise of 0.25b≥b1≥0.1b. Therefore, the photovoltaic modules have better stress resistance and stronger resistance to wind and trampling.

[0045] Optionally, n1=n2=1, n1+n2=2, 2w=b+c, ​​b2=w.

[0046] When PV panels are laid vertically, half the total coverage width of two profiled sheets equals half the length of the first side of a PV panel and half the first distance between two adjacent PV panels, further satisfying the modular matching requirement for each cycle. Furthermore, half the distance between two connection points equals half the coverage width of a profiled sheet. Each profiled sheet has a larger coverage width, and one PV panel requires two or three profiled sheets, a smaller number. This reduces the installation cost of the profiled sheets. Furthermore, direct modular matching between PV panels and profiled sheets reduces the gap between adjacent PV panels, allowing for a larger installed capacity.

[0047] Optionally, n1=2, n2=1, n1+n2=3, 3w=b+c, ​​b2=2w.

[0048] When PV panels are laid vertically, half the total coverage width of the three profiled sheets is equal to the sum of half the length of the first side of a PV panel and half the first distance between two adjacent PV panels, further satisfying the modular matching requirement for each cycle. Furthermore, half the distance between two connection points is equal to half the coverage width of the two profiled sheets. Each profiled sheet has a larger coverage width, and one PV panel requires three or four profiled sheets, a smaller number. This reduces the installation cost of the profiled sheets. Furthermore, after direct modular matching between PV panels and profiled sheets, the gaps between adjacent PV panels are smaller, resulting in a larger installed capacity.

[0049] Optional, 0≤c min ≤w, where c min is the minimum value of c;

[0050] c=c min +n3×w; where n3 is a natural number.

[0051] c min When it is 0, it means there is no gap between adjacent PV panels, and the installed capacity is the largest. min w represents the first distance between adjacent photovoltaic modules, which is the coverage width of a profiled board. In the installation process of photovoltaic modules, if c is greater than 0, it can facilitate the installation of photovoltaic modules. 0≤c min ≤w takes into account both the installed capacity and the installation of photovoltaic modules. c=c min +n3×w, indicating that in a photovoltaic system, c can be a variable value within a specific range of values, which can adapt to different installation conditions of photovoltaic modules. At the same time, for locations that may be stepped on later, such as those where operation and maintenance channels need to be set up, c can take a larger value.

[0052] A second aspect of the present application provides a method for laying photovoltaic modules, used to form any of the aforementioned photovoltaic systems, wherein the shape of any of the photovoltaic modules is rectangular, and any of the photovoltaic modules includes intersecting long and short sides, the length of the long side is l1, the length of the short side is l2, l1 ≥ l2, the coverage width of each of the profiled plates is w, the total coverage width of the plurality of profiled plates is B, the total size of the plurality of profiled plates in a direction perpendicular to the coverage width is A, the first distance between two adjacent photovoltaic modules in a direction parallel to the first side is c, and the second distance between two adjacent photovoltaic modules in a direction perpendicular to the coverage width is d; the length of any of the first sides is b; in the photovoltaic system, n×w / 2=b / 2+c / 2, c ≥ 0, and n is a positive integer greater than or equal to 2;

[0053] The method comprises:

[0054] In horizontal laying mode: take the long side as the first side, take the minimum value of c, and obtain the maximum value of p when l1+c>Bp×l1-(p-1)×c≥0 and p is a positive integer. Obtain the maximum value of q when l2+d>Aq×l2-(q-1)×d≥0 and q is a positive integer.

[0055] In vertical laying mode: take the short side as the first side, take the minimum value of c, and obtain the maximum value of m when l2+c>Bm×l2-(m-1)×c≥0 and m is a positive integer. Obtain the maximum value of e when l1+d>Ae×l1-(e-1)×d≥0 and e is a positive integer.

[0056] Select the larger value from p×q and e×m;

[0057] The photovoltaic components are installed on the plurality of profiled plates according to the laying method corresponding to the large value.

[0058] n×w / 2=b / 2+c / 2, as mentioned above, ensures direct modular matching between photovoltaic modules and corrugated sheets. p×l1 is the total size of p photovoltaic modules on the coverage width of the corrugated sheet when the photovoltaic modules are laid horizontally, c takes the minimum value, (p-1)×c is the total size of all minimum gaps of p photovoltaic modules in the direction of the coverage width of the corrugated sheet when the photovoltaic modules are laid horizontally, Bp×l1-(p-1)×c is the surplus of coverage width in the direction of the coverage width of the corrugated sheet when the photovoltaic modules are laid horizontally. If this surplus is greater than or equal to l1+c, it indicates that at least one more photovoltaic module can be laid. Therefore, when l1+c>Bp×l1-(p-1)×c≥0, and p is a positive integer, the maximum value of p is obtained, which can indicate how many photovoltaic modules can be laid in the direction of the coverage width of the corrugated sheet when the photovoltaic modules are laid horizontally. q×l² is the total size of q PV modules in the direction perpendicular to the width of the profiled sheeting when the PV modules are laid horizontally. d also takes the minimum value. (q-1)×d is the total size of all minimum gaps between q PV modules in the direction perpendicular to the width of the profiled sheeting when the PV modules are laid horizontally. Aq×l²-(q-1)×d is the excess of the total profiled sheeting size in the direction perpendicular to the width of the profiled sheeting when the PV modules are laid horizontally. If this excess is greater than or equal to l²+d, it indicates that at least one more PV module can be laid. Therefore, when l²+d>Aq×l²-(q-1)×d≥0, and q is a positive integer, the maximum value of q is obtained, which indicates the maximum number of PV modules that can be laid in the direction perpendicular to the width of the profiled sheeting when the PV modules are laid horizontally. p×q is the maximum number of PV modules that can be laid in total when the PV modules are laid horizontally. m×l2 is the total size of m photovoltaic modules in the direction of the coverage width of the corrugated board when the photovoltaic modules are laid vertically. c takes the minimum value. (m-1)×c is the total size of all minimum gaps of m photovoltaic modules in the direction of the coverage width of the corrugated board when the photovoltaic modules are laid vertically. Bm×l2-(m-1)×c is the surplus of coverage width in the direction of the coverage width of the corrugated board when the photovoltaic modules are laid vertically. If the surplus is greater than or equal to l2+c, it indicates that at least one more photovoltaic module can be laid. Therefore, when l2+c>Bm×l2-(m-1)×c≥0, and m is a positive integer, the maximum value of m is obtained, which can indicate how many photovoltaic modules can be laid at most in the direction of the coverage width of the corrugated board when the photovoltaic modules are laid vertically.e×l1 is the total size of e PV modules in the direction perpendicular to the width of the profiled sheeting when the PV modules are laid vertically. d also takes its minimum value. (e-1)×d is the total size of all minimum gaps between e PV modules in the direction perpendicular to the width of the profiled sheeting when the PV modules are laid vertically. Ae×l2-(e-1)×d is the excess of the profiled sheeting in the direction perpendicular to the width of the profiled sheeting when the PV modules are laid vertically. If this excess is greater than or equal to l1+d, at least one more PV module can be installed. Therefore, when l1+d>Ae×l1-(e-1)×d≥0, and e is a positive integer, the maximum value of e is obtained, which indicates the maximum number of PV modules that can be installed in the direction perpendicular to the width of the profiled sheeting when the PV modules are laid vertically. e×m is the maximum number of PV modules that can be installed in the direction perpendicular to the width of the profiled sheeting when the PV modules are laid vertically. The larger value is selected from the two numbers p×q and e×m, which corresponds to the maximum installed capacity of both horizontal and vertical paving. The photovoltaic modules are installed on the aforementioned corrugated plates using the laying method corresponding to the maximum installed capacity, ensuring the maximum installed capacity.

[0059] Optionally, in a direction parallel to the coverage width, the dimensions of the two ends of the profiled plate obscured by shadows are E1 and E2 respectively; in a direction perpendicular to the coverage width, the dimensions of the two ends of the profiled plate obscured by shadows are E3 and E4 respectively;

[0060] In the horizontal laying mode, the long side is taken as the first side, c takes the minimum value, and when l1+c>Bp×l1-(p-1)×c≥0 and p is a positive integer, the maximum value of p is obtained, and when l2+d>Aq×l2-(q-1)×d≥0 and q is a positive integer, the maximum value of q is obtained, including:

[0061] In horizontal laying mode: take the long side as the first side, take the minimum value of c, and obtain the maximum value of p when l1+c>(B-E1-E2)-p×l1-(p-1)×c≥0 and p is a positive integer. Obtain the maximum value of q when l2+d>(A-E3-E4)-q×l2-(q-1)×d≥0 and q is a positive integer.

[0062] In the vertical paving method, the short side is taken as the first side, c takes the minimum value, and when l2+c>Bm×l2-(m-1)×c≥0 and m is a positive integer, the maximum value of m is obtained, and when l1+d>Ae×l1-(e-1)×d≥0 and e is a positive integer, the maximum value of e is obtained, including:

[0063] In the vertical laying method: take the short side as the first side, take the minimum value of c, and obtain the maximum value of m when l2+c>(B-E1-E2)-m×l2-(m-1)×c≥0 and m is a positive integer. Obtain the maximum value of e when l1+d>(A-E3-E4)-e×l1-(e-1)×d≥0 and e is a positive integer.

[0064] B-E1-E2 represents the effective coverage width of all corrugated sheets in the direction of the coverage width after considering shadow blocking. A-E3-E4 represents the effective laying size of all corrugated sheets in the direction perpendicular to the coverage width after considering shadow blocking. Regardless of whether it is laid horizontally or vertically, the laying is carried out after considering shadow blocking, thereby ensuring that the photovoltaic modules are laid on the effective size of the corrugated sheets without shadow blocking, and the laid photovoltaic modules can generate electricity normally.

[0065] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0067] FIG1 shows a partial structural diagram of a first photovoltaic system according to an embodiment of the present application;

[0068] FIG2 shows a partial structural diagram of a second photovoltaic system according to an embodiment of the present application;

[0069] FIG3 shows a partial structural diagram of a third photovoltaic system according to an embodiment of the present application;

[0070] FIG4 shows a partial structural diagram of a fourth photovoltaic system according to an embodiment of the present application;

[0071] FIG5 shows a partial structural diagram of a fifth photovoltaic system in an embodiment of the present application;

[0072] FIG6 shows a partial structural diagram of a sixth photovoltaic system in an embodiment of the present application;

[0073] FIG7 shows a schematic structural diagram of a photovoltaic assembly in a photovoltaic system according to an embodiment of the present application;

[0074] FIG8 shows a schematic structural diagram of a photovoltaic assembly in another photovoltaic system according to an embodiment of the present application;

[0075] FIG9 shows a partial structural diagram of a seventh photovoltaic system in an embodiment of the present application.

[0076] Description of the accompanying figures: 1-photovoltaic module, 11-first side, 12-connection point, 13-second side, 2-corrugated board. Specific embodiments

[0077] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0078] The inventors discovered that the main reason for installing guide rails between photovoltaic modules and profiled sheets in current photovoltaic systems is that they need to achieve modular matching. This modular matching facilitates the installation of photovoltaic modules. Furthermore, it unifies the connection methods and stress forms of photovoltaic modules, enabling better assessment of the mechanical properties of photovoltaic modules and improving the safety of photovoltaic module stress. However, achieving direct modular matching between photovoltaic modules and profiled sheets is relatively complex. Therefore, current photovoltaic systems do not consider direct modular matching between photovoltaic modules and profiled sheets, but instead use guide rails to achieve indirect modular matching between the two.

[0079] In response to the above technical problems, the inventors creatively discovered that in a photovoltaic system, in a direction parallel to the first side, it appears periodically with half of the first side and half of the first distance between two adjacent photovoltaic modules. Therefore, the formula 1, n×w / 2=b / 2+c / 2, is proposed, that is, half of the total coverage width of an integer number of corrugated plates is equal to the sum of half of the length of the first side of a photovoltaic module and half of the first distance between two adjacent photovoltaic modules. That is, each of the above nw / 2 satisfies the requirement of direct modular matching between the photovoltaic module and the corrugated plate in each period. Therefore, the present application only needs half of the total coverage width of the above integer number of corrugated plates, half of the length of the first side, and half of the first distance between two adjacent photovoltaic modules in a direction parallel to the first side to satisfy the above equation to achieve direct modular matching between the corrugated plate and the photovoltaic module. Furthermore, there is no need to set up additional guide rails between the photovoltaic module and the corrugated plate, which reduces the weight of the photovoltaic system on the one hand and reduces the cost of the photovoltaic system on the other hand. At the same time, when the number of connection points on the photovoltaic module is not limited and the distribution position of the connection points is not limited, the modular matching of the two can be achieved, and the scope of application is wide.

[0080] The photovoltaic system provided by the present application is further explained below in conjunction with the accompanying drawings. With reference to Figures 1 to 6 and 9, the photovoltaic system may include: a number of profiled plates 2 spliced ​​together. There is no limit on the number of profiled plates 2 included in the photovoltaic system. For ease of display, the figure only shows the perpendicular bisector L1 of the coverage width w of the profiled plate 2 and the sideline L2 of the coverage width w of the profiled plate 2. The sideline L2 of the coverage width w of the profiled plate 2 refers to a line passing through the end points of the coverage width of a profiled plate 2, and L1 and L2 are parallel. The label L1 / L2 in the figure means that this line in the figure is one of L1 and L2. Here, the definition of the coverage width w of any corrugated sheet 2 can refer to the relevant records in 4.11 of the national standard GB / T12755-2008. In other words, the coverage width w of the corrugated sheet 2 refers to the distance between the center line of the connecting portion of adjacent corrugated sheets 2 and the center line of the connecting portion of another adjacent corrugated sheet 2. Here, the two center lines are adjacent, and the coverage width w of any corrugated sheet 2 is equal to or different from the width of the corrugated sheet 2. The coverage width w of any corrugated sheet 2 can refer to the effectively utilized width of the corrugated sheet.

[0081] It should be noted that, in this application, there is no specific limitation on the material of the profiled plate 2. For example, the profiled plate 2 can be a metal profiled plate, etc. In this application, there is no specific limitation on the structure of the profiled plate 2. For example, the profiled plate 2 in this application is not limited to a single-layer profiled plate, but also includes a composite plate or sandwich panel containing a profiled plate.

[0082] The photovoltaic system may also include: a plurality of photovoltaic modules 1 fixed on the corrugated plate 2. The first side 11 of any photovoltaic module 1 is fixed on the corrugated plate 2. The first side 11 of the photovoltaic module 1 may be fixed to the corrugated plate 2 by a clamp. In this case, a connection point 12 may be provided on the first side 11, and the clamp is provided at the position of the connection point 12. Alternatively, at least a portion of the first side 11 of the photovoltaic module 1 is fixed to the corrugated plate 2 by gluing. In this case, glue is provided on at least one point on the first side 11. This may be point bonding or line bonding. In point bonding, each bonding point is not completely continuous. In line bonding, each bonding point may be continuous, and the distribution direction of each bonding point intersects with the first side 11. For example, if gluing is used in FIG1 , the distribution direction of each bonding point may be in the up and down direction.

[0083] The shape of any photovoltaic component 1 is rectangular. Referring to Figures 1 to 9, the direction indicated by the dotted line L is the direction parallel to the first side 11. In the direction parallel to the first side 11, the first distance between two adjacent photovoltaic components 1 is c, c ≥ 0. When c is equal to 0, that is, in the direction parallel to the first side 11, there is no gap between two adjacent photovoltaic components 1. When c is greater than 0, that is, in the direction parallel to the first side 11, there is a gap between two adjacent photovoltaic components 1. As shown in Figures 1 to 6 and 9, in the direction parallel to the first side 11, the distance c between two adjacent photovoltaic components 1 is greater than 0, that is, there is a gap between two adjacent photovoltaic components 1. The side length of any first side 11 is b.

[0084] Then we have: n×w / 2=b / 2+c / 2 (Formula 1)

[0085] n is a positive integer greater than or equal to 2. In the photovoltaic system, nw / 2 is half of the total coverage width of an integer number of profiled sheets 2, b / 2 is half of the length of the first side 11, and c / 2 is half of the first distance between two adjacent photovoltaic modules 1 in a direction parallel to the first side 11. In the photovoltaic system, in a direction parallel to the first side 11, it appears periodically with half of the first side 11 and half of the first distance between two adjacent photovoltaic modules 1. The above formula 1 represents that half of the total coverage width of an integer number of profiled sheets 2 is equal to the sum of half of the length of the first side 11 of a photovoltaic module 1 and half of the first distance between two adjacent photovoltaic modules 1, thereby achieving the relative position of the profiled sheets 2 and the photovoltaic module 1 remaining unchanged, that is, each of the above nw / 2s meets the modular matching requirements of each period. Therefore, the present application can achieve direct modular matching between the profiled plate 2 and the photovoltaic module 1 by only requiring half of the total coverage width of the integer number of profiled plates 2, half of the length of the first side 11, and half of the first distance between two adjacent photovoltaic modules 1 in a direction parallel to the first side 11 to satisfy the above formula 1. Therefore, there is no need to set up additional guide rails between the photovoltaic module 1 and the profiled plate 2, which reduces the weight of the photovoltaic system on the one hand and the cost of the photovoltaic system on the other hand. At the same time, modular matching can be achieved between the two when the number of connection points on the photovoltaic module 1 is not limited and the distribution position of the connection points is not limited, which has a wide range of applications.

[0086] More specifically, the perpendicular bisector of the first side 11 is L3. The midline of two adjacent photovoltaic modules 1 is L4. The midline of two adjacent photovoltaic modules 1 refers to the perpendicular bisector of the total size of the two adjacent photovoltaic modules 1 as a whole in a direction parallel to the first side 11.

[0087] The surface of the profiled sheet 2 proximate to the photovoltaic module 1 refers to the surface of the profiled sheet 2 closest to the photovoltaic module 1 after the photovoltaic module 1 is placed on the profiled sheet 2. In a photovoltaic system, the light-receiving surface of the photovoltaic module 1 is generally away from the profiled sheet 2, while the backlight surface of the photovoltaic module 1 is generally close to the profiled sheet 2. The light-receiving and backlight surfaces of the photovoltaic module 1 are relatively distributed. Therefore, the surface of the profiled sheet 2 proximate to the photovoltaic module 1 can be the surface of the profiled sheet 2 that is immediately adjacent to the backlight surface of the photovoltaic module 1.

[0088] In this application, overlap means that two orthographic projections have overlapping parts. Here, the area of ​​the overlapping parts can be equal to the area of ​​the two overlapping orthographic projections, or the area of ​​the overlapping parts can be smaller than the area of ​​any one of the two overlapping projections. That is, the two projections partially overlap, and the rest of the parts do not overlap. In the case of taking construction errors into consideration, overlap can mean that the spacing between the two projections on the surface of the corrugated board 2 close to the photovoltaic module 1 is less than or equal to a preset distance. The preset distance here is determined based on construction errors, etc. For example, overlap here can mean that the spacing between the two projections on the surface of the corrugated board 2 close to the photovoltaic module 1 is less than or equal to 50 mm (millimeter).

[0089] In this photovoltaic system, the aforementioned L1, L2, L3, and L4 are parallel to each other. Formula 1 specifically represents that the relative position relationship of L1, L2, L3, and L4 is one of the following four types: the first to the fourth.

[0090] The first is that, on the surface of the corrugated plate 2 close to the photovoltaic module 1, the orthographic projection of L3 coincides with the orthographic projection of a portion of L1, and the orthographic projection of L4 coincides with the orthographic projection of another portion of L1. Specifically, in this case, referring to Figures 1, 2, 4, and 5, the dotted line marked L1 / L2 is the edge line L2 of the covering width w on the corrugated plate 2. That is to say, on the surface of the corrugated plate 2 close to the photovoltaic module 1, in the photovoltaic system, the orthographic projection L3 of the perpendicular bisector of the first side 11 of any photovoltaic module 1 coincides with the orthographic projection L1 of the perpendicular bisector of the covering width of a portion of the corrugated plate 2, and the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection L1 of the perpendicular bisector of the covering width w of the remaining portion of the corrugated plate 2. On the surface of the profiled sheet 2 close to the photovoltaic module 1, the orthographic projections of all L3 may coincide with the orthographic projections of the perpendicular bisector L1 of the coverage width w of a portion of the profiled sheet 2, or the orthographic projections of L3 exceeding a preset proportion of the total number of all L3 may coincide with the orthographic projections of the perpendicular bisector L1 of the coverage width w of a portion of the profiled sheet 2. The preset proportion here can be set according to actual needs. On the surface of the profiled sheet 2 close to the photovoltaic module 1, the orthographic projections of all L4 may coincide with the orthographic projections of the perpendicular bisector L1 of the coverage width w of a portion of the profiled sheet 2, or the orthographic projections of L4 exceeding a preset proportion of the total number of all L4 may coincide with the orthographic projections of the perpendicular bisector L1 of the coverage width w of a portion of the profiled sheet 2. The preset proportion here can also be set according to actual needs. For example, the preset proportion here can be 98%. It should be noted that the higher the preset ratio is, the more the relative positions of the profiled plate 2 and the photovoltaic module 1 can be kept unchanged without considering the construction error, and the more the purpose of direct modular matching between the two can be achieved.

[0091] The second type is that on the surface of the aforementioned corrugated sheet 2 close to the photovoltaic module 1, the orthographic projection of L3 coincides with the orthographic projection of a portion of L2, and the orthographic projection of L4 coincides with the orthographic projection of another portion of L2. Specifically, in this case, referring to Figures 1, 2, 4, and 5, the dotted line marked L1 / L2 is the perpendicular bisector L1 of the coverage width w of the corrugated sheet 2. That is, on the surface of the corrugated sheet 2 close to the photovoltaic module 1, the orthographic projection of the perpendicular bisector L3 of the first side 11 of any photovoltaic module 1 in the photovoltaic system coincides with the orthographic projection of the edge line L2 of the coverage width w of the portion of the corrugated sheet 2. The orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection of the edge line L2 of the coverage width w of the remaining portion of the corrugated sheet 2. On the surface of the profiled sheet 2 near the photovoltaic module 1, the orthographic projections of all L3s can coincide with the orthographic projections of the edge L2 of the coverage width w of the profiled sheet 2, or a predetermined percentage of the total number of L3s can coincide with the orthographic projections of the edge L2 of the coverage width w of the profiled sheet 2. This predetermined percentage can be set according to actual needs. On the surface of the profiled sheet 2 near the photovoltaic module 1, the orthographic projections of all L4s can coincide with the orthographic projections of the edge L2 of the coverage width w of the profiled sheet 2, or a predetermined percentage of the total number of L4s can coincide with the orthographic projections of the edge L2 of the coverage width w of the profiled sheet 2. This predetermined percentage can also be set according to actual needs. For example, this predetermined percentage can be 98%. It should be noted that the higher the predetermined percentage, the more likely the relative position of the profiled sheet 2 and the photovoltaic module 1 will remain unchanged, ignoring construction errors, and the more likely the two will achieve direct modular matching.

[0092] The third type is that on the surface of the aforementioned corrugated plate 2 close to the photovoltaic module 1, the orthographic projection of L3 coincides with the orthographic projection of a portion of L1, and the orthographic projection of L4 coincides with the orthographic projection of a portion of L2. Specifically, referring to Figures 3 and 6, the dotted line marked L1 / L2 is the perpendicular bisector L1 of the coverage width w of the corrugated plate 2. That is to say, on the surface of the corrugated plate 2 close to the photovoltaic module 1, in the photovoltaic system, the orthographic projection of the perpendicular bisector L3 of the first side 11 of any photovoltaic module 1 coincides with the orthographic projection of the perpendicular bisector L1 of the coverage width w of a portion of the corrugated plate 2, and the orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection of the sideline L2 of the coverage width w of a portion of the corrugated plate 2. On the surface of the profiled sheet 2 near the photovoltaic module 1, the orthographic projections of all L3 points can coincide with the orthographic projections of the perpendicular bisector L1 of the coverage width w of a portion of the profiled sheet 2. Alternatively, the orthographic projections of L3 points exceeding a predetermined percentage of the total number of L3 points can coincide with the orthographic projections of the perpendicular bisector L1 of the coverage width w of a portion of the profiled sheet 2. This predetermined ratio can be set based on actual needs. On the surface of the profiled sheet 2 near the photovoltaic module 1, the orthographic projections of all L4 points can coincide with the orthographic projections of the edge L2 of the coverage width w of a portion of the profiled sheet 2. Alternatively, the orthographic projections of L4 points exceeding a predetermined percentage of the total number of L4 points can coincide with the orthographic projections of the edge L2 of the coverage width w of a portion of the profiled sheet 2. This predetermined ratio can also be set based on actual needs. For example, this predetermined ratio can be 98%. It should be noted that the higher the predetermined ratio, the more likely the relative position of the profiled sheet 2 and the photovoltaic module 1 will remain unchanged, ignoring construction errors, and the more likely the two will achieve direct modular matching.

[0093] The fourth type is that, on the surface of the aforementioned corrugated plate 2 close to the photovoltaic module 1, the orthographic projection of L3 coincides with the orthographic projection of a portion of L2, and the orthographic projection of L4 coincides with the orthographic projection of a portion of L1. Specifically, referring to Figures 3 and 6, the dotted line marked L1 / L2 is the edge line L2 of the coverage width w of the corrugated plate 2. That is to say, on the surface of the corrugated plate 2 close to the photovoltaic module 1, in the photovoltaic system, the orthographic projection of the perpendicular bisector L3 of the first side 11 of any photovoltaic module 1 coincides with the orthographic projection of the edge line L2 of the coverage width w of the partial corrugated plate 2, and the orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection of the perpendicular bisector L1 of the coverage width w of the partial corrugated plate 2. On the surface of the profiled sheet 2 close to the photovoltaic module 1, the orthographic projections of all L3 can coincide with the orthographic projections of the edge line L2 of the coverage width w of a portion of the profiled sheet 2, or the orthographic projections of L3 exceeding a preset proportion of the total number of all L3 can coincide with the orthographic projections of the edge line L2 of the coverage width w of a portion of the profiled sheet 2. The preset proportion here can be set according to actual needs. On the surface of the profiled sheet 2 close to the photovoltaic module 1, the orthographic projections of all L4 can coincide with the orthographic projections of the perpendicular bisector L1 of the coverage width w of a portion of the profiled sheet 2, or the orthographic projections of L4 exceeding a preset proportion of the total number of all L4 can coincide with the orthographic projections of the perpendicular bisector L1 of the coverage width w of a portion of the profiled sheet 2. The preset proportion here can also be set according to actual needs. For example, the preset proportion here can be 98%. It should be noted that the higher the preset ratio is, the more the relative positions of the profiled plate 2 and the photovoltaic module 1 can be kept unchanged without considering the construction error, and the more the purpose of direct modular matching between the two can be achieved.

[0094] In summary, in any of the above four methods, in a photovoltaic system, it is only necessary to adjust the relative position relationship between the corrugated plate 2 and the photovoltaic layer assembly 1. More specifically, in a photovoltaic system, by only adjusting L3 and L4 of the photovoltaic assembly 1 and adjusting the relative position relationship between L1 and L2 of the corrugated plate 2, the relative position of the corrugated plate 2 and the photovoltaic assembly 1 can be kept unchanged, thereby achieving the purpose of direct modular matching between the two. There is no need to set up additional guide rails between the photovoltaic assembly 1 and the corrugated plate 2. On the one hand, it reduces the weight of the photovoltaic system, and on the other hand, it reduces the cost of the photovoltaic system. At the same time, when the number of connection points 12 on the photovoltaic assembly 1 is not limited and the distribution position of the connection points 12 is not limited, the relative position relationship between L3 and L4 of the photovoltaic assembly 1 and L1 and L2 of the corrugated plate 2 reaches one of the above four methods, direct modular matching between the two can be achieved, and the scope of application is wide.

[0095] It should be noted that the lines marked L3 in Figures 3 and 6 are also marked L1 / L2, which can be used to indicate that, on the surface of the profiled plate 2 close to the photovoltaic module 1, in the photovoltaic system, the orthographic projection of the perpendicular bisector L3 of the first side 11 of any photovoltaic module 1 coincides with the orthographic projection of the perpendicular bisector L1 of the coverage width w of a portion of the profiled plate 2. Alternatively, on the surface of the profiled plate 2 close to the photovoltaic module 1, in the photovoltaic system, the orthographic projection of the perpendicular bisector L3 of the first side 11 of any photovoltaic module 1 coincides with the orthographic projection of the edge line L2 of the coverage width w of a portion of the profiled plate 2.

[0096] Optionally, referring to Figures 1 to 8, the connection point 12 on the photovoltaic module 1 refers to the point where the photovoltaic module 1 is fixedly connected to the corrugated plate 2. For example, when the photovoltaic module 1 is fixed to the corrugated plate 2 by a clamp, the clamp can be set at the connection point 12. There are several connection points 12 on the first side 11 of any photovoltaic module 1. There is no limit on the number of connection points on a first side 11. For example, in Figures 1 to 8, the number of connection points on each first side 11 is 2. Any photovoltaic module 1 is fixed to the corrugated plate 2 through the connection point 12. On the surface of the corrugated plate 2 close to the photovoltaic module 1, the orthographic projection of each connection point 12 falls on the orthographic projection of one of the perpendicular bisector L1 of the coverage width w of the corrugated plate 2 or the side line L2 of the coverage width w of the corrugated plate 2. Here, on the surface of the corrugated plate 2 close to the photovoltaic module 1, the orthographic projection of the connection point 12 falls on the orthographic projection of one of L1 or L2. It can be that on the surface of the corrugated plate 2 close to the photovoltaic module 1, the orthographic projection of the connection point 12 has an overlapping portion with the orthographic projection of one of L1 or L2, and the area of ​​the overlapping portion is less than or equal to the area of ​​the orthographic projection of the connection point 12. On the surface of the corrugated plate 2 close to the photovoltaic module 1, the orthographic projection of each connection point 12 falls on the orthographic projection of one of L1 or L2. In the process of installing and fixing the photovoltaic module 1 on the corrugated plate 2 through the connection point 12, the exact positions of L1 and L2 here have been determined when ensuring the direct module matching of the corrugated plate 2 and the photovoltaic module 1. There is no need to additionally determine the installation position here. Setting the connection point 12 at the aforementioned position can improve the installation efficiency and installation accuracy of the photovoltaic module 1. Moreover, by setting the connection point 12 at the above-mentioned position, the photovoltaic component 1 is more stably and evenly limited by the corrugated plate 2, and has better ability to withstand subsequent trampling, wind blowing, etc. For the corrugated plate 2, the reaction force of the above-mentioned connection effect relative to the corrugated plate 2 is more evenly distributed, and has less impact on the mechanical properties of the corrugated plate 2.

[0097] For example, referring to Figures 1 to 8 , if the dotted line marked L1 / L2 is the edge line L2 of the coverage width w of the profiled sheet 2, then the orthographic projection of each connection point 12 on the surface of the profiled sheet 2 near the photovoltaic module 1 falls on the orthographic projection of the edge line L2 of the coverage width w of the profiled sheet 2. The exact position of L2 here has already been determined when ensuring the direct module matching between the profiled sheet 2 and the photovoltaic module 1. Therefore, there is no need to further determine the installation position, which can improve installation efficiency and accuracy.

[0098] Optionally, referring to Figures 1 to 6, there is a gap between two adjacent photovoltaic modules 1, and the center line L4 of the two adjacent photovoltaic modules 1 is the perpendicular bisector of the gap. When there is a gap between two adjacent photovoltaic modules 1, the installation of the photovoltaic modules 1 is more convenient.

[0099] Optionally, a photovoltaic module 1 is covered on at least one side rib of the corrugated plate 2. The side rib of the corrugated plate 2 is the edge line of the corrugated plate 2. A photovoltaic module 1 is covered on at least one side rib of the corrugated plate 2, which indicates that a photovoltaic module 1 spans at least one corrugated plate 2, or in other words, the side length of the first side 11 of a photovoltaic module 1 is greater than or equal to the size of the corrugated plate 2 in the direction of the first side, that is, a photovoltaic module 1 requires at least one corrugated plate 2 for support, and thus the supporting force shared by each corrugated plate 2 is smaller and more uniform, and the supporting effect on the photovoltaic module 1 is better.

[0100] Optionally, any photovoltaic module 1 is rectangular, and each of the two first sides 11 of any photovoltaic module 1 has two connection points 12. Any photovoltaic module 1 is fixed to the profiled plate 2 via the four connection points 12. Referring to Figures 1, 4, 7, and 8, in any first side 11: the distance between the two endpoints of the first side 11 and the adjacent connection points 12 is b1, and the distance between the two connection points 12 is b2. Referring to Figures 1, 4, 7, and 8, the side length of any first side 11 is b, and it can be concluded that b = 2b1 + b2. n1×w / 2 = b2 / 2 (Formula 2) n2×w / 2 = b1 + c / 2 (Formula 3)

[0101] Where n1 and n2 are both positive integers, and n1 + n2 = n. n1w / 2 is half the total coverage width of n1 integral number of profiled sheets 2, and b2 / 2 is half the distance between the two connection points. That is, when the connection points are arranged in the aforementioned manner, in the photovoltaic system, half the total coverage width of n1 integral number of profiled sheets 2 is equal to half the distance between the two connection points. n2w / 2 is half of the total coverage width of n2 integer corrugated sheets 2, b1+c / 2 is the sum of the distance between the two end points of the first side and the adjacent connection points 12, and half of the first distance between two adjacent photovoltaic modules in the direction parallel to the first side. That is, in the photovoltaic system, half of the total coverage width of n2 integer corrugated sheets 2 is equal to the distance between the two end points of the first side 11 and the adjacent connection points 12, and half of the first distance between two adjacent photovoltaic modules 1 in the direction parallel to the first side 11. The period of half the first side 11 and half of the first distance between two adjacent photovoltaic modules 1 is split into half of the distance between the two connection points 12 on the first side 11. This sub-period, as well as the distance between the two end points of the first side 11 and the adjacent connection points 12, and the sub-period of half the first distance between two adjacent photovoltaic components 1 in the direction parallel to the first side 11, the sum of the two sub-periods, in the photovoltaic system, in the direction parallel to the first side 11, are these two sub-periods that appear periodically in sequence, thereby achieving half the distance between the corrugated board 2 and the two connection points 12 in the photovoltaic component 1, as well as the distance between the two end points of the first side 11 and the adjacent connection points 12, and half the first distance between two adjacent photovoltaic components 1 in the direction parallel to the first side 11. The relative positions remain unchanged, further meeting the modular matching requirements of each period.

[0102] It should be noted that the values ​​of n1 and n2 here can be positive integers.

[0103] Optionally, referring to Figures 1 to 9, any photovoltaic module 1 includes an intersecting first side 11 and a second side 13. The length of the first side 11 is equal to the length of the second side 13, that is, the shape of the photovoltaic module 1 is a square. Alternatively, referring to Figures 1 to 9, the length b of the first side 11 is not equal to the length a of the second side 13, that is, the shape of the photovoltaic module 1 is a rectangle, and the shape of the photovoltaic module 1 is flexible and diverse. For example, in Figure 9, the photovoltaic module 1 includes an intersecting long side and a short side, the length of the long side is l1, and the length of the short side is l2, l1>l2, and the shape of the photovoltaic module is a rectangle. In Figure 9, the long side is used as the first side, that is, the laying method of the photovoltaic module 1 is a horizontal laying method, then in Figure 9, the length of the first side b=l1. In the case where the lengths of the first side 11 and the second side 13 are not equal, the difference between the two is not limited. For example, if the lengths of the first side 11 and the second side 13 are unequal, the longer side can be between 600 mm and 3000 mm, meaning the length l1 of the long side can be between 600 mm and 3000 mm, and the shorter side can be between 600 mm and 2000 mm, meaning the length l2 of the short side can be between 600 mm and 2000 mm. A square photovoltaic module is defined when the length of the first side 11 is equal to the length of the second side 13; a rectangular photovoltaic module is defined when the lengths of the first side 11 and the second side 13 are unequal. The photovoltaic system of the present application is applicable to both square and rectangular photovoltaic modules.

[0104] Optionally, referring to Figures 1 to 3, as well as Figures 7 and 9, the side length b of the first side 11 is greater than the side length a of the second side 13, 1500mm≥w≥300mm, 3000mm≥b≥600mm, the long side of the photovoltaic module is fixed on the corrugated board 2, and the laying method of the photovoltaic module 1 is horizontal laying. The currently commonly used range of values ​​of the first side length b of the photovoltaic module 1 and the range of values ​​of the covering width w of the corrugated board 2 respectively correspond to the above ranges. That is to say, in this application, when the photovoltaic module 1 is laid horizontally, it is applicable to the currently commonly used photovoltaic module 1 and the corrugated board 2.

[0105] For example, the coverage width w of the profiled plate 2 can be 300 mm, or 360 mm, or 418 mm, or 468 mm, or 475 mm, or 500 mm, or 508 mm, or 776 mm, or 900 mm, or 1000 mm, or 1164 mm, or 1500 mm. The side length b of the first side 11 can be 600 mm, or 700 mm, or 900 mm, or 1200 mm, or 1500 mm, or 1722 mm, or 1755 mm, or 2089 mm, or 2094 mm, or 2100 mm, or 2272 mm, or 2278 mm, or 2700 mm, or 3000 mm.

[0106] Optionally, referring to Figures 1 to 3, as well as Figures 7 and 9, 10≥n≥2. Specifically, when the photovoltaic module 1 is laid horizontally, 3000 / 300≥b / w≥600 / 1500, that is, 10≥b / w≥0.4, the ratio of the coverage width w of the corrugated board 2 and the side length b of the first side 11 is within the aforementioned range, and because n1 and n2 are both positive integers, and at the same time, (n1+n2)w=b+c, n1+n2=n, then, 10≥n≥2, c can be made as small as possible, that is, c / w is negligible, that is, the coverage width w of the corrugated board 2 and the side length b of the first side 11 are respectively within the aforementioned range, and at the same time, 10≥n≥2, it can be ensured that the distance c between two adjacent photovoltaic modules 1 is as small as possible, and c is as small as possible while the total area remains unchanged, and at the same time, When the photovoltaic module 1 is laid horizontally, half of the total coverage width of 2 to 10 corrugated plates 2 is equal to the sum of half the length of the first side 11 of a photovoltaic module 1 and half the first distance between two adjacent photovoltaic modules 1. When n>10, the coverage width of each corrugated plate 2 is too narrow, and the number of corrugated plates 2 corresponding to one photovoltaic module 1 is large, and the installation cost of the corrugated plates 2 is high. When n is 1, after the photovoltaic module 1 and the corrugated plates 2 are directly matched in modularity, the gap between adjacent photovoltaic modules 1 is large, resulting in a decrease in installed capacity. Therefore, 10≥n≥2, the number of corrugated plates 2 corresponding to one photovoltaic module 1 is small, and the installation cost of the corrugated plates 2 is low. Moreover, after the photovoltaic module 1 and the corrugated plates 2 are directly matched in modularity, the gap between adjacent photovoltaic modules 1 is small, which can increase the installed capacity.

[0107] Alternatively, referring to Figures 1 to 3 and Figure 7, 0.3b ≥ b1 ≥ 0.15b, the larger the value of b1, the closer the connection point 12 is to the center of the photovoltaic module 1, and the smaller the value of b1, the closer the connection point 12 is to the edge of the photovoltaic module 1. When the photovoltaic module 1 is laid horizontally, when b1 is less than 0.15b, the distance between the connection point 12 and the edge of the photovoltaic module 1 is relatively close, and the distance between the two connection points 12 is too large, resulting in excessive deflection of the photovoltaic module 1. When b1 is greater than 0.3b, the connection point 12 is relatively close to the center of the photovoltaic module 1, the distance between the two connection points 12 is too small, the overhang distance of the edge of the photovoltaic module 1 is too large, the stability is poor, and the limiting effect on the edge of the photovoltaic module 1 is insufficient. Therefore, when the value of b1 is between 0.15b and 0.3b, the location of the connection point 12 is optimal, the photovoltaic module 1 is better subjected to force, and the resistance to wind and trampling is stronger.

[0108] Optionally, referring to Figures 1 to 3, and Figure 7, 3 / 14≤n2 / (2n1)≤3 / 4. Specifically, in the case of horizontal laying, 0.3b≥b1≥0.15b can ensure a good installed capacity, and the photovoltaic module 1 has good mechanical properties. Since b=2b1+b2, 0.15(2b1+b2)≤b1≤0.3(2b1+b2), it can be deduced that 3b2 / 14≤b1≤3b2 / 4, 3 / 14≤b1 / b2≤3 / 4. At the same time, dividing the above formula 3 by twice formula 2, we can obtain n2 / (2n1)=(b1+c / 2) / b2. When the first distance c between two adjacent photovoltaic modules 1 is as small as possible, c / 2b2 can be ignored, and formula 4 can be obtained: 3 / 14≤n2 / (2n1)≤3 / 4 (Formula 4)

[0109] Furthermore, in the photovoltaic system, 3 / 14≤n2 / (2n1)≤3 / 4. On the premise of ensuring the module matching between the photovoltaic module 1 and the corrugated board 2, not only can a good installed capacity be guaranteed, but the photovoltaic module 1 also has good mechanical properties and strong resistance to wind and trampling.

[0110] Optionally, referring to FIG2 , n1=n2=1, n1+n2=2, 2w=b+c; b2=w. Specifically, when the photovoltaic modules are laid horizontally, n2 / (2n1)=0.5. Within the interval [3 / 14, 3 / 4], that is, half of the total coverage width of two corrugated sheets 2 is equal to the sum of half the length of the first side 11 of a photovoltaic module 1 and half the first distance between two adjacent photovoltaic modules 1, further satisfying the modular matching requirement for each cycle. Furthermore, half the distance between two connection points 12 is equal to half the coverage width of a corrugated sheet 2. The coverage width of each corrugated sheet 2 is large, and one photovoltaic module 1 corresponds to two or three corrugated sheets 2, which is a small number. Therefore, the installation cost of the corrugated sheets 2 is low. Furthermore, after the photovoltaic modules 1 and the corrugated sheets 2 are directly modularly matched, the gap between adjacent photovoltaic modules 1 is small, and the installed capacity is large. Here, on the surface of the profiled plate 2 close to the photovoltaic module 1, the orthographic projection of the perpendicular bisector L3 of the first side 11 coincides with the orthographic projection of the side line L2 of the coverage width w of a portion of the profiled plate 2, and in the direction parallel to the first side 11, the orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection of another portion of L2, and thus, one photovoltaic module 1 corresponds to two profiled plates 2. On the surface of the profiled plate 2 close to the photovoltaic module 1, the orthographic projection of the perpendicular bisector L3 of the first side 11 coincides with the orthographic projection of the perpendicular bisector L1 of the coverage width w of a portion of the profiled plate 2, and in the direction parallel to the first side 11, the orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection of another portion of L1, and thus, one photovoltaic module 1 corresponds to three profiled plates 2.

[0111] For example, referring to Figure 2, the side length b of the first side 11 of the photovoltaic module 1 is 2278 mm. In the direction parallel to the first side 11, the first distance c between two adjacent photovoltaic modules 1 is 50 mm, n1=n2=1, n1+n2=2, 2w=b+c; b2=w, then, the covering width w of a corrugated board 2 is 1164 mm, and the distance b2 between the two connection points 12 on the first side 11 is 1164 mm. Because b=2b1+b2, the distance b1 between any end point of the first side 11 and the adjacent connection point 12 thereon is 557 mm, which not only ensures the modular matching of the corrugated board 2 and the photovoltaic module 1, but also ensures a good installed capacity, and the photovoltaic module 1 has good mechanical properties.

[0112] Optionally, referring to FIG3 , n1=2, n2=1, n1+n2=3, 3w=b+c; b2=2w. Specifically, n2 / (2n1)=0.25, which is within the interval [3 / 14, 3 / 4]. That is, half of the coverage width 2w of two profiled plates 2 is equal to half of the distance b2 between two connection points 12 in a first side 11. Half of the coverage width 3w of three profiled plates 2 is equal to half of the side length b of the first side 11 of a photovoltaic module, plus half of the first distance c between two adjacent photovoltaic modules 1 in a direction parallel to the first side 11. The coverage width of each profiled plate 2 is large, and one photovoltaic module 1 corresponds to three or four profiled plates 2, which is a small number. The installation cost of the profiled plates 2 is low, which not only ensures direct modular matching between the profiled plates 2 and the photovoltaic module 1, but also ensures a good installed capacity. In addition, the photovoltaic module 1 has good mechanical properties. Here, on the surface of the profiled plate 2 close to the photovoltaic module 1, the orthographic projection of the perpendicular bisector L3 of the first side 11 coincides with the orthographic projection of the side line L2 of the coverage width w of a portion of the profiled plate 2, and in the direction parallel to the first side 11, the orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection of another portion of L2, and thus one photovoltaic module corresponds to three profiled plates 2. On the surface of the profiled plate 2 close to the photovoltaic module 1, the orthographic projection of the perpendicular bisector L3 of the first side 11 coincides with the orthographic projection of the perpendicular bisector L1 of the coverage width w of a portion of the profiled plate 2, and in the direction parallel to the first side 11, the orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection of another portion of L1, and thus one photovoltaic module corresponds to four profiled plates 2.

[0113] For example, referring to Figure 3, the side length b of the first side 11 of the photovoltaic module 1 is 2278 mm. In the direction parallel to the first side 11, the first distance c between two adjacent photovoltaic modules 1 is 50 mm, n1=2, n2=1, n1+n2=3, 3w=b+c; b2=2w, then, the covering width w of a corrugated board 2 is 776 mm, and the distance b2 between the two connection points 12 on the first side 11 is 1552 mm. Because b=2b1+b2, the distance b1 between any end point of the first side 11 and its adjacent connection point 12 is 363 mm, which not only ensures direct modular matching between the corrugated board 2 and the photovoltaic module 1, but also ensures a good installed capacity, and the photovoltaic module 1 has good mechanical properties.

[0114] Optionally, referring to Figures 4 to 6, and Figure 8, the length of the first side 11 is smaller than the length of the second side 13, 1500mm≥w≥300mm, 2000mm≥b≥600mm, the short side of the photovoltaic module 1 is fixed on the corrugated board 2, and the laying method of the photovoltaic module 1 is vertical laying. The currently commonly used range of values ​​of the first side length b of the photovoltaic module 1 and the range of values ​​of the covering width w of the corrugated board 2 respectively correspond to the above ranges. That is to say, in this application, when the photovoltaic module 1 is laid vertically, it is applicable to the currently commonly used photovoltaic modules 1 and corrugated boards 2.

[0115] For example, the coverage width w of the profiled plate 2 can be 300 mm, or 360 mm, or 418 mm, or 468 mm, or 475 mm, or 500 mm, or 508 mm, or 776 mm, or 900 mm, or 1000 mm, or 1164 mm, or 1500 mm. The side length b of the first side 11 can be 600 mm, or 698 mm, or 900 mm, or 1038 mm, or 1128 mm, or 1134 mm, or 1500 mm, or 1700 mm, or 1910 mm, or 2000 mm.

[0116] Optionally, referring to Figures 4 to 6, and Figure 8, 6≥n≥2, specifically, 2000 / 300≥b / w≥600 / 1500, that is, 6.7≥b / w≥0.4, and because n1 and n2 are both positive integers, and at the same time, (n1+n2)w=b+c, n1+n2=n, then, 6≥n≥2, can make c as small as possible, that is, c / w is negligible, that is, the coverage width w of the corrugated board 2 and the side length b of the first side 11 are respectively within the aforementioned ranges, and at the same time, 6≥n≥2, can ensure that the first distance c between two adjacent photovoltaic modules 1 is as small as possible, and c is as small as possible while the total area remains unchanged. On the premise of ensuring the modular matching of the photovoltaic module 1 and the corrugated board 2, as many photovoltaic modules 1 as possible can be installed, thereby increasing the installed capacity as much as possible. More specifically, when the photovoltaic modules 1 are laid vertically, half of the total coverage width of 2 to 6 corrugated plates 2 is equal to the sum of half the length of the first side 11 of a photovoltaic module 1 and half the first distance between two adjacent photovoltaic modules 1. When n>6, the coverage width of each corrugated plate 2 is too narrow, and the number of corrugated plates 2 corresponding to one photovoltaic module 1 is large, and the installation cost of the corrugated plates 2 is high. When n is 1, after the photovoltaic module 1 and the corrugated plates 2 are directly matched in modularity, the gap between adjacent photovoltaic modules 1 is large, resulting in a decrease in installed capacity. Therefore, 6≥n≥2, the number of corrugated plates 2 corresponding to one photovoltaic module 1 is small, and the installation cost of the corrugated plates 2 is low. Moreover, after the photovoltaic module 1 and the corrugated plates 2 are directly matched in modularity, the gap between adjacent photovoltaic modules 1 is small, which can increase the installed capacity.

[0117] Optionally, referring to Figures 4 to 6, and Figure 8, 0.25b≥b1≥0.1b, the distance b1 between any end point of the first side 11 and the adjacent connection point 12, and the numerical relationship with the side length b of the first side 11 are within the above range. Under the premise of ensuring the module matching between the photovoltaic module 1 and the profiled plate 2, the good mechanical properties of the photovoltaic module 1 can be guaranteed, and the installed capacity is large. More specifically, the larger the value of b1, the closer the connection point 12 is to the middle of the photovoltaic module 1, and the smaller the value of b1, the closer the connection point 12 is to the edge of the photovoltaic module 1. In the case where the photovoltaic module 1 is laid vertically, when b1 is less than 0.1b, the distance between the connection point 12 and the edge of the photovoltaic module 1 is close, and the distance between the two connection points 12 is too large, which will cause the deflection of the photovoltaic module 1 to be too large. When b1 is greater than 0.25b, connection point 12 is too close to the center of PV module 1, and the distance between the two connection points 12 is too small. The edge of PV module 1 overhangs too much, resulting in poor stability and insufficient positional restraint on the edge of PV module 1. Therefore, when b1 is set between 0.1b and 0.25b, the location of connection point 12 is optimal, the PV module 1 is better protected against wind and trampling, and has greater resistance to wind and trampling.

[0118] Optionally, referring to Figures 4 to 6, and Figure 8, 1 / 8 ≤ n2 / (2n1) ≤ 1 / 2. Specifically, 0.25b ≥ b1 ≥ 0.1b can ensure a good installed capacity, and the photovoltaic module 1 has good mechanical properties. When the first distance c between two adjacent photovoltaic modules 1 is as small as possible, because b = 2b1 + b2, then 0.1(2b1 + b2) ≤ b1 ≤ 0.25(2b1 + b2), it can be deduced that b2 / 8 ≤ b1 ≤ b2 / 2, and 1 / 8 ≤ b1 / b2 ≤ 1 / 2. At the same time, dividing the above formula 3 by twice formula 2 can obtain n2 / (2n1) = (b1 + c / 2) / b2. When the first distance c between two adjacent photovoltaic modules 1 is as small as possible, c / 2b2 can be ignored, and formula 5 can be obtained: 1 / 8 ≤ n2 / (2n1) ≤ 1 / 2 (Formula 5)

[0119] Furthermore, in the photovoltaic system, 1 / 8≤n2 / (2n1)≤1 / 2. On the premise of ensuring direct modular matching between the photovoltaic module 1 and the profiled plate 2, not only can a good installed capacity be guaranteed, but the photovoltaic module 1 also has good mechanical properties and strong resistance to wind and trampling.

[0120] Optionally, referring to Figure 5, n1=n2=1, n1+n2=2, 2w=b+c; b2=w, specifically, n2 / (2n1)=0.5, in the interval [1 / 8,1 / 2], that is, when the photovoltaic modules are laid vertically, half of the coverage width w of one corrugated board 2 is equal to half of b2, and half of the coverage width 2w of two corrugated boards 2 is equal to half of the side length b of the first side of a photovoltaic module, plus the sum of half of the first distance c between two adjacent photovoltaic modules 1 in a direction parallel to the first side 11, which further meets the modular matching requirements of each cycle. Moreover, half the distance between the two connection points 12 is equal to half the coverage width of a corrugated plate 2. The coverage width of each corrugated plate 2 is large. One photovoltaic module 1 corresponds to two or three corrugated plates 2, which is a small number. The installation cost of the corrugated plates 2 is low. After the photovoltaic module 1 and the corrugated plates 2 are directly matched in modularity, the gap between adjacent photovoltaic modules 1 is small. This not only ensures direct modular matching between the corrugated plates 2 and the photovoltaic module 1, but also ensures a good installed capacity, and the photovoltaic module 1 has good mechanical properties. Here, on the surface of the corrugated plate 2 close to the photovoltaic module 1, the orthographic projection of the perpendicular bisector L3 of the first side 11 coincides with the orthographic projection of the side line L2 of the coverage width w of a portion of the corrugated plates 2. In the direction parallel to the first side 11, when the orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection of another portion of L2, one photovoltaic module corresponds to two corrugated plates 2. On the surface of the corrugated sheet 2 close to the photovoltaic module 1, the orthographic projection of the perpendicular bisector L3 of the first side 11 coincides with the orthographic projection of the perpendicular bisector L1 of the coverage width w of a portion of the corrugated sheet 2. When the orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 in a direction parallel to the first side 11 coincides with the orthographic projection of another portion of L1, there are three corrugated sheets 2 corresponding to one photovoltaic module.

[0121] For example, referring to Figure 5, the side length b of the first side 11 of the photovoltaic module 1 is 1134 mm. In the direction parallel to the first side 11, the first distance c between two adjacent photovoltaic modules 1 is 50 mm, n1=n2=1, n1+n2=2, 2w=b+c; b2=w, then, the covering width w of a corrugated board 2 is 592 mm, and the distance b2 between the two connection points on the first side 11 is 592 mm. Because b=2b1+b2, the distance b1 between any end point of the first side 11 and its adjacent connection point 12 is 271 mm, which not only ensures direct modular matching between the corrugated board 2 and the photovoltaic module 1, but also ensures a good installed capacity, and the photovoltaic module 1 has good mechanical properties.

[0122] Optionally, referring to Figure 6, n1 = 2, n2 = 1, n1 + n2 = 3, 3w = b + c; b2 = 2w. Specifically, n2 / (2n1) = 0.25, which is within the interval [1 / 8, 1 / 2]. That is, half of the coverage width 2w of two corrugated sheets 2 is equal to half of the distance b2 between two connection points in a first side, and half of the coverage width 3w of three corrugated sheets 2 is equal to half of the side length b of the first side 11 of a photovoltaic module. In addition, the sum of half of the first distance c between two adjacent photovoltaic modules 1 in a direction parallel to the parallel direction of the first side 11 further meets the direct modulus matching requirement of each cycle. And half of the distance between the two connection points 12 is equal to half of the coverage width of the two corrugated plates 2. The coverage width of each corrugated plate 2 is large. There are three or four corrugated plates 2 corresponding to one photovoltaic module 1, which is a small number. The installation cost of the corrugated plates 2 is low. It can not only ensure the direct modular matching between the corrugated plates 2 and the photovoltaic module 1, but also ensure a good installed capacity, and the photovoltaic module 1 has good mechanical properties. Here, on the surface of the corrugated plate 2 close to the photovoltaic module 1, the orthographic projection of the perpendicular bisector L3 of the first side 11 coincides with the orthographic projection of the side line L2 of the coverage width w of a portion of the corrugated plates 2. In the direction parallel to the first side 11, when the orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection of another portion of L2, there are three corrugated plates 2 corresponding to one photovoltaic module. On the surface of the corrugated sheet 2 close to the photovoltaic module 1, the orthographic projection of the perpendicular bisector L3 of the first side 11 coincides with the orthographic projection of the perpendicular bisector L1 of the coverage width w of a portion of the corrugated sheet 2. In the direction parallel to the first side 11, the orthographic projection of the center line L4 of two adjacent photovoltaic modules 1 coincides with the orthographic projection of another portion of L1. In this case, there are four corrugated sheets 2 corresponding to one photovoltaic module.

[0123] For example, referring to Figure 6, the side length b of the first side 11 of the photovoltaic module 1 is 1134 mm. In the direction parallel to the first side 11, the first distance c between two adjacent photovoltaic modules 1 is 50 mm, n1=2, n2=1, n1+n2=3, 3w=b+c; b2=2w, then, the coverage width w of a corrugated board 2 is 395 mm, and the distance b2 between the two connection points 12 on the first side 11 is 790 mm. Because b=2b1+b2, the distance b1 between any end point of the first side 11 and its adjacent connection point 12 is 172 mm, which not only ensures direct modular matching between the corrugated board 2 and the photovoltaic module 1, but also ensures a good installed capacity, and the photovoltaic module 1 has good mechanical properties.

[0124] Optional, 0≤c min ≤w, where c minis the minimum value of c, that is, whether it is laid horizontally or vertically, in the direction parallel to the first side 11, the minimum value of the first distance c between adjacent photovoltaic modules is between 0 and the coverage width w of the profiled board 2. min When it is 0, it means there is no gap between adjacent photovoltaic modules 1, and the installed capacity is the largest at this time. min w represents the first distance between adjacent photovoltaic modules 1, which is the coverage width of a profiled plate 2. During the installation of the photovoltaic modules 1, if c is greater than 0, it can facilitate the installation of the photovoltaic modules 1. 0≤c min ≤w takes into account both the installed capacity and the installation of photovoltaic modules 1. c=c min +n3×w, indicating that in the photovoltaic system, c can be a variable value within a specific value range, which can adapt to different installation conditions of the photovoltaic components 1. At the same time, for locations that may be stepped on later, such as those where operation and maintenance channels need to be set up, c can take a larger value.

[0125] It should be noted that the aforementioned photovoltaic system solutions can be combined with each other if they are not contradictory, and the various solutions obtained thereby are all within the scope of protection of this application.

[0126] The present application also provides a method for laying photovoltaic modules, which is used to form any of the aforementioned photovoltaic systems. The shape of any photovoltaic module 1 is rectangular, and any photovoltaic module 1 includes intersecting long sides and short sides. Referring to Figure 9, the length of the long side is l1, and the length of the short side is l2, l1≥l2, and the covering width of each corrugated board 2 is w. The total covering width of several corrugated boards 2 is B, where B can be equal to the total number of corrugated boards 2 × w. In the direction perpendicular to the covering width, the total size of several corrugated boards 2 is A, and in the direction parallel to the aforementioned first side, the first distance between two adjacent photovoltaic modules 1 is c, and the direction of the covering width w of the corrugated board 2 is parallel to the first side. In the direction perpendicular to the covering width, the second distance between two adjacent photovoltaic modules 1 is d. The side length of any of the aforementioned first sides 11 is b. In this photovoltaic system, n×w / 2=b / 2+c / 2, c≥0, and n is a positive integer greater than or equal to 2, which ensures direct modular matching between the photovoltaic module 1 and the profiled plate 2 as described above.

[0127] The method may include the following steps.

[0128] Step 101, in horizontal laying mode: take the long side as the first side, take the minimum value of c, and obtain the maximum value of p when l1+c>Bp×l1-(p-1)×c≥0 and p is a positive integer; obtain the maximum value of q when l2+d>Aq×l2-(q-1)×d≥0 and q is a positive integer.

[0129] Referring to Figure 9 , horizontal laying refers to using the long side of the PV module 1 as the first side, or in other words, the long side of the PV module 1 is parallel to the coverage width w of the corrugated sheet 2. In this case, the length of the long side, l1 = b. Taking the minimum value of c refers to the minimum value that c can take when the long side of the PV module 1 is used as the first side or when laying horizontally. The minimum value of c can be determined according to the aforementioned formula 1 or based on empirical values. There are no specific restrictions on the method for determining the minimum value of c, nor on its specific value. When c takes the minimum value, the maximum installed capacity can be achieved along the coverage width of the corrugated sheet 2.

[0130] The length of the long side of the photovoltaic module 1 is l1, then p×l1 is the total size of the p photovoltaic modules 1 in the direction of the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid horizontally. In the direction parallel to the aforementioned first side 11, the first distance between two adjacent photovoltaic modules 1 is c. c takes the minimum value, then (p-1)×c is all the minimum gaps or all the minimum first distances of the p photovoltaic modules 1 in the direction of the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid horizontally. Bp×l1-(p-1)×c is the surplus of the coverage width in the direction of the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid horizontally. If this surplus is greater than or equal to l1+c, it indicates that at least one more photovoltaic module 1 can be laid. Therefore, when l1+c>Bp×l1-(p-1)×c≥0, and p is a positive integer, the maximum value of p is obtained, which can be used to indicate the maximum number of photovoltaic modules 1 that can be laid in the direction of the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid horizontally.

[0131] The length of the short side of a photovoltaic module 1 is l2, so q×l2 is the total size of q photovoltaic modules 1 in a direction perpendicular to the coverage width of the profiled sheet 2 when the photovoltaic modules 1 are laid horizontally. The second distance between two adjacent photovoltaic modules 1 in the direction perpendicular to the coverage width is d, and d is also taken as the minimum value here. The minimum value of d refers to the minimum value that d can take when the long side of the photovoltaic module 1 is used as the first side or laid horizontally. It is mainly determined by the degree of thermal expansion and contraction of the photovoltaic system. The minimum value of d can be determined based on empirical values. If d is greater than or equal to 10mm, the minimum value of d here can be 10mm. When d takes the minimum value, the maximum installed capacity can be obtained in the direction perpendicular to the coverage width of the corrugated board 2. Then, (q-1)×d is all the minimum gaps or all the minimum second distances of q photovoltaic modules 1 in the direction perpendicular to the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid horizontally. Aq×l2-(q-1)×d is the surplus of the total size of the corrugated board 2 in the direction perpendicular to the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid horizontally. If the surplus is greater than or equal to l2+d, it indicates that at least one more photovoltaic module 1 can be laid. Therefore, when l2+d>Aq×l2-(q-1)×d≥0, and q is a positive integer, the maximum value of q is obtained, which can indicate how many photovoltaic modules 1 can be laid at most in the direction perpendicular to the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid horizontally.

[0132] When photovoltaic modules 1 are laid horizontally, a maximum of p photovoltaic modules 1 can be laid in the direction of the covered width of the profiled board 2, and a maximum of q photovoltaic modules 1 can be laid in the direction perpendicular to the covered width of the profiled board 2. Therefore, when photovoltaic modules 1 are laid horizontally, a maximum of p×q photovoltaic modules 1 can be laid.

[0133] Step 102, in vertical paving mode: take the short side as the first side, take the minimum value of c, and obtain the maximum value of m when l2+c>Bm×l2-(m-1)×c≥0 and m is a positive integer; obtain the maximum value of e when l1+d>Ae×l1-(e-1)×d≥0 and e is a positive integer.

[0134] The vertical installation method here refers to using the short side of the PV module 1 as the first side, or in other words, the short side of the PV module 1 is parallel to the coverage width w of the corrugated board 2. In this case, the length of the short side, l2 = b. The minimum value of c refers to the minimum value that c can take when the short side of the PV module 1 is used as the first side or when the PV module is installed vertically. The minimum value of c can be determined according to the aforementioned formula 1 or based on empirical values. There are no specific restrictions on the method for determining the minimum value of c, nor are there specific limitations on the specific value of c. When c is minimized, the maximum installed capacity can be achieved along the coverage width of the corrugated board 2.

[0135] The length of the short side of the photovoltaic module 1 is l2. m×l2 is the total size of m photovoltaic modules 1 in the direction of the coverage width of the corrugated board 2 when the photovoltaic modules are laid vertically. In the direction parallel to the first side 11, the first distance between two adjacent photovoltaic modules 1 is c, where c takes the minimum value. (m-1)×c is the minimum gap or minimum first distance of all m photovoltaic modules 1 in the direction of the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid vertically. Bm×l2-(m-1)×c is the surplus of coverage width in the direction of the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid vertically. If this surplus is greater than or equal to l2+c, it indicates that at least one more photovoltaic module 1 can be laid. Therefore, when l2+c>Bm×l2-(m-1)×c≥0, and m is a positive integer, the maximum value of m is obtained, which can be used to indicate the maximum number of photovoltaic modules that can be laid in the direction of the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid vertically.

[0136] The length of the long side of the photovoltaic module 1 is l1, and e×l1 is the total size of e photovoltaic modules 1 in the direction perpendicular to the covering width of the corrugated board 2 when the photovoltaic module is laid vertically. Here, d also takes the minimum value. The minimum value of d means: when the short side of the photovoltaic module 1 is used as the first side or laid vertically, the minimum value that d can take is mainly determined by the degree of thermal expansion and contraction of the photovoltaic system. The minimum value of d can be determined based on empirical values. If d is greater than or equal to 10mm, the minimum value of d here can be 10mm. When d takes the minimum value, the maximum installed capacity can be obtained in the direction perpendicular to the coverage width of the corrugated board 2. (e-1)×d is all the minimum gaps or all the minimum second distances of e photovoltaic modules 1 in the direction perpendicular to the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid vertically. Ae×l2-(e-1)×d is the surplus of the total size of the corrugated board 2 in the direction perpendicular to the coverage width of the corrugated board 2 when the photovoltaic modules are laid vertically. If the surplus is greater than or equal to l1+d, it means that at least one more photovoltaic module 1 can be laid. Therefore, when l1+d>Ae×l1-(e-1)×d≥0, and e is a positive integer, the maximum value of e is obtained, which can indicate how many photovoltaic modules 1 can be laid at most in the direction perpendicular to the coverage width of the corrugated board 2 when the photovoltaic modules 1 are laid vertically.

[0137] When photovoltaic modules 1 are laid vertically, a maximum of m photovoltaic modules can be laid in the direction of the covered width of the profiled board 2, and a maximum of e photovoltaic modules 1 can be laid in the direction perpendicular to the covered width of the profiled board 2. Therefore, when photovoltaic modules 1 are laid vertically, a maximum of e×m photovoltaic modules can be laid in total.

[0138] Step 103: Select the larger value from the two numbers p×q and e×m.

[0139] If PV panels 1 are laid horizontally, a maximum of p × q PV panels 1 can be installed. If PV panels 1 are laid vertically, a maximum of e × m PV panels can be installed. Selecting the larger of p × q and e × m means that, given the same number of profiled sheets 2, the horizontal or vertical laying method is chosen to achieve the highest installed capacity.

[0140] Step 104 : installing the photovoltaic modules on the plurality of profiled plates according to the laying method corresponding to the large value.

[0141] The laying method corresponding to the larger value is the one with the larger installed capacity between the horizontal laying method and the vertical laying method. According to the laying method with the larger installed capacity, the photovoltaic modules 1 are installed on the aforementioned plurality of profiled boards 2, thereby ensuring the installed capacity.

[0142] Optionally, referring to FIG9 , in a direction parallel to the coverage width of the profiled sheet 2, the dimensions of the aforementioned profiled sheet 2 at both ends obscured by shadows are E1 and E2, respectively; in a direction perpendicular to the coverage width of the profiled sheet 2, the dimensions of the aforementioned profiled sheet 2 at both ends obscured by shadows are E3 and E4, respectively. Then, the aforementioned step 101 may include: in a horizontal laying mode: taking the long side as the first side 11, c takes the minimum value, and when l1+c>(B-E1-E2)-p×l1-(p-1)×c≥0 is satisfied, and p is a positive integer, the maximum value of p is obtained, d also takes the minimum value, and when l2+d>(A-E3-E4)-q×l2-(q-1)×d≥0 is satisfied, and q is a positive integer, the maximum value of q is obtained. Specifically, B-E1-E2 represents the effective coverage width of all corrugated sheets 2 in the direction of the coverage width of the corrugated sheets 2 after considering the shadow. Therefore, l1+c>(B-E1-E2)-p×l1-(p-1)×c≥0, and when p is a positive integer, the maximum value of p is obtained, that is, when the photovoltaic modules 1 are laid horizontally, in the direction of the coverage width of the corrugated sheets 2, the effective coverage width corresponding to all corrugated sheets 2 after considering the shadow can lay a maximum of p photovoltaic modules 1. A-E3-E4 represents the effective laying dimensions of all profiled sheets 2 after taking into account shadows in the direction perpendicular to the coverage width of the profiled sheets 2. Therefore, when l2+d>(A-E3-E4)-q×l2-(q-1)×d≥0 and q is a positive integer, the maximum value of q is obtained, which means that when the photovoltaic modules 1 are laid horizontally, in the direction perpendicular to the coverage width of the profiled sheets 2, the effective laying dimensions of all profiled sheets 2 after taking into account shadows can lay a maximum of q photovoltaic modules 1. The resulting p×q is the maximum number of photovoltaic modules 1 that can be laid in the horizontal laying method after taking into account shadows. This ensures that all photovoltaic modules 1 are laid on the effective dimensions of the profiled sheets 2 without shadows, and that all laid photovoltaic modules 1 can generate electricity normally. Here, c takes the minimum value and d takes the minimum value, which can be referred to the relevant records of c taking the minimum value and d taking the minimum value when the long side of the photovoltaic component 1 is used as the first side or laid horizontally. In order to avoid repetition, it will not be repeated here.

[0143] Optionally, in a direction parallel to the coverage width of the profiled sheet 2, the dimensions of the two ends of all the profiled sheets 2 that are shadowed are E1 and E2 respectively, and in a direction perpendicular to the coverage width of the profiled sheet 2, the dimensions of the two ends of all the profiled sheets 2 that are shadowed are E3 and E4 respectively. Then, the aforementioned step 102 may include: taking the short side as the first side, c taking the minimum value, and obtaining the maximum value of m when l2+c>(B-E1-E2)-m×l2-(m-1)×c≥0 and m is a positive integer, that is, when the photovoltaic modules 1 are laid vertically, in the direction of the coverage width of the profiled sheet 2, the effective coverage width corresponding to all the profiled sheets 2 after considering the shadows can lay a maximum of m photovoltaic modules 1. d also takes the minimum value. When l1+d>(A-E3-E4)-e×l1-(e-1)×d≥0 is satisfied and e is a positive integer, the maximum value of e is obtained. That is, when the photovoltaic modules 1 are laid vertically, in the direction perpendicular to the coverage width of the corrugated board 2, the effective laying size corresponding to all corrugated boards 2 after considering the shadow shielding can lay a maximum of e photovoltaic modules 1. The m×e obtained in this way is the maximum number of photovoltaic modules 1 that can be laid in the vertical laying mode after considering the shadow shielding. It can ensure that the photovoltaic modules 1 are laid on the effective size of the corrugated board 2 without shadow shielding, and the laid photovoltaic modules 1 can all generate electricity normally. Here, c takes the minimum value and d takes the minimum value. You can refer to the relevant records of taking c and d as the minimum value when the short side of the photovoltaic module 1 is used as the first side or when laying vertically. In order to avoid repetition, it will not be repeated here.

[0144] It should be noted that the laying method of photovoltaic modules and the aforementioned photovoltaic system can be referenced to each other in related aspects and can achieve the same or similar beneficial effects. In order to avoid this, the relevant parts are abbreviated.

[0145] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0146] References herein to "one embodiment," "an embodiment," or "one or more embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Furthermore, please note that instances of the phrase "in one embodiment" do not necessarily all refer to the same embodiment.

[0147] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description. In the claims, any reference symbols placed between brackets should not be constructed as limitations on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of multiple such elements. The present application can be implemented by means of hardware comprising several different elements and by means of appropriately programmed computers. In a unit claim that lists several means, several of these means can be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names.

[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A photovoltaic system, characterized in that: include: A plurality of corrugated plates spliced ​​to each other; and a plurality of photovoltaic modules fixed on the profiled plate; the first side of any of the photovoltaic modules is fixed on the profiled plate; The covering width of each of the profiled plates is w; the shape of any of the photovoltaic modules is rectangular, and the first distance between two adjacent photovoltaic modules in the direction parallel to the first side is c; the side length of any of the first sides is b; n×w / 2=b / 2+c / 2, c≥0, and n is a positive integer greater than or equal to 2.

2. The photovoltaic system according to claim 1, characterized in that: The first side of any photovoltaic module has a plurality of connection points; any photovoltaic module is fixed to the profiled plate through the connection points; the perpendicular bisector of the coverage width of any profiled plate is L1; the sideline of any coverage width is L2; ​​L2 is parallel to L1; On the surface of the profiled plate close to the photovoltaic module, the orthographic projection of each of the connection points falls on the orthographic projection of one of L1 or L2.

3. The photovoltaic system according to claim 1, characterized in that: One of the photovoltaic modules is covered on at least one edge rib of the profiled plate.

4. The photovoltaic system according to any one of claims 1 to 3, characterized in that: Each of the two first sides of the photovoltaic module has two connection points; each of the photovoltaic modules is fixed to the profiled plate through four of the connection points; In any of the first edges: the distances between the two endpoints of the first edge and its adjacent connection points are b1, and the distance between the two connection points is b2; n1×w / 2=b2 / 2, n2×w / 2=b1+c / 2, where c≥0, n1 and n2 are both positive integers, and n1+n2=n.

5. The photovoltaic system according to claim 4, characterized in that: Any of the photovoltaic components comprises a first side and a second side that intersect each other; the length of the first side is equal to the length of the second side; or the length of the first side is not equal to the length of the second side.

6. The photovoltaic system according to claim 5, characterized in that: The length of the first side is greater than the length of the second side; 1500mm≥w≥300mm, 3000mm≥b≥600mm.

7. The photovoltaic system according to claim 6, characterized in that: 10≥n≥2。 8. The photovoltaic system according to claim 6, characterized in that: 0.3b≥b1≥0.15b.

9. The photovoltaic system according to claim 8, characterized in that: 3 / 14≤n2 / (2n1)≤3 / 4.

10. The photovoltaic system according to claim 9, characterized in that: n1=n2=1, n1+n2=2, 2w=b+c, ​​b2=w.

11. The photovoltaic system according to claim 9, characterized in that: n1=2, n2=1, n1+n2=3, 3w=b+c, ​​b2=2w.

12. The photovoltaic system according to claim 5, characterized in that: The length of the first side is smaller than the length of the second side; 1500mm≥w≥300mm, 2000mm≥b≥600mm.

13. The photovoltaic system according to claim 12, characterized in that: 6≥n≥2。 14. The photovoltaic system according to claim 12, characterized in that: 0.25b≥b1≥0.1b.

15. The photovoltaic system according to claim 14, characterized in that: 1 / 8≤n2 / (2n1)≤1 / 2.

16. The photovoltaic system according to claim 15, characterized in that: n1=n2=1, n1+n2=2, 2w=b+c, ​​b2=w.

17. The photovoltaic system according to claim 15, characterized in that: n1=2, n2=1, n1+n2=3, 3w=b+c, ​​b2=2w.

18. The photovoltaic system according to any one of claims 1 to 17, characterized in that: 0≤c min ≤w, where c min is the minimum value of c; c=c min +n3×w; where n3 is a natural number.

19. A method for laying photovoltaic modules, characterized in that: Used to form the photovoltaic system described in any one of claims 1 to 18, any one of the photovoltaic modules is in the shape of a rectangle, any one of the photovoltaic modules includes intersecting long sides and short sides, the length of the long side is l1, the length of the short side is l2, l1≥l2, the coverage width of each of the profiled plates is w, the total coverage width of the plurality of profiled plates is B, the total size of the plurality of profiled plates in the direction perpendicular to the coverage width is A, the first distance between two adjacent photovoltaic modules in the direction parallel to the first side is c, and the second distance between two adjacent photovoltaic modules in the direction perpendicular to the coverage width is d; the length of any one of the first sides is b; in the photovoltaic system, n×w / 2=b / 2+c / 2, c≥0, and n is a positive integer greater than or equal to 2; The method comprises: In the horizontal laying mode: take the long side as the first side, take the minimum value of c, and get the maximum value of p when l1+c>Bp×l1-(p-1)×c≥0 and p is a positive integer; get the maximum value of q when l2+d>Aq×l2-(q-1)×d≥0 and q is a positive integer; In vertical laying mode: take the short side as the first side, take the minimum value of c, and get the maximum value of m when l2+c>Bm×l2-(m-1)×c≥0 and m is a positive integer; get the maximum value of e when l1+d>Ae×l1-(e-1)×d≥0 and e is a positive integer; Select the larger value from the two numbers p×q and e×m; The photovoltaic components are installed on the plurality of corrugated plates according to the laying method corresponding to the large value.

20. The laying method according to claim 19, characterized in that: In the direction parallel to the covering width, the dimensions of the two ends of the profiled plate that are shaded by the shadow are E1 and E2 respectively; in the direction perpendicular to the covering width, the dimensions of the two ends of the profiled plate that are shaded by the shadow are E3 and E4 respectively; In the horizontal laying mode, the long side is taken as the first side, c takes the minimum value, and when l1+c>Bp×l1-(p-1)×c≥0 is satisfied and p is a positive integer, the maximum value of p is obtained, and when l2+d>Aq×l2-(q-1)×d≥0 is satisfied and q is a positive integer, the maximum value of q is obtained, including: In the horizontal laying mode: take the long side as the first side, take the minimum value of c, and get the maximum value of p when l1+c>(B-E1-E2)-p×l1-(p-1)×c≥0 and p is a positive integer; get the maximum value of q when l2+d>(A-E3-E4)-q×l2-(q-1)×d≥0 and q is a positive integer; In the vertical paving method, the short side is taken as the first side, c takes the minimum value, and when l2+c>Bm×l2-(m-1)×c≥0 and m is a positive integer, the maximum value of m is obtained, and when l1+d>Ae×l1-(e-1)×d≥0 and e is a positive integer, the maximum value of e is obtained, including: In the vertical paving method: take the short side as the first side, take the minimum value of c, and get the maximum value of m when l2+c>(B-E1-E2)-m×l2-(m-1)×c≥0 and m is a positive integer; get the maximum value of e when l1+d>(A-E3-E4)-e×l1-(e-1)×d≥0 and e is a positive integer.

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