Photovoltaic unit and photovoltaic system

Abstract

The utility model provides a photovoltaic unit and a photovoltaic system, and relates to the technical field of photovoltaic power generation. Each photovoltaic unit comprises a support assembly, a first photovoltaic assembly and a second photovoltaic assembly, the first photovoltaic assembly and the second photovoltaic assembly are arranged on the support assembly in pairs, the first photovoltaic assembly and the second photovoltaic assembly are arranged in the first direction, the first direction is the horizontal direction, and the first photovoltaic assembly and the second photovoltaic assembly are obliquely arranged relative to the first direction. The first photovoltaic module and the second photovoltaic module are symmetrical about a first plane, and the first plane is perpendicular to the first direction. No height difference exists between the side, close to the second photovoltaic module, of the first photovoltaic module and the side, close to the first photovoltaic module, of the second photovoltaic module, and the situation that one front photovoltaic module shields the other rear photovoltaic module is avoided. Therefore, the distance between the first photovoltaic module and the second photovoltaic module can be greatly reduced, most sunlight can be ensured to be projected on the first photovoltaic module and the second photovoltaic module, and the utilization rate of the sunlight is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic unit and a photovoltaic system. Background Art

[0002] In existing photovoltaic power generation systems, photovoltaic modules are often arranged at an angle, and the front and rear rows of photovoltaic modules are parallel to each other. In order to prevent the top of the front photovoltaic module from blocking the bottom of the rear photovoltaic module, a certain distance is left between the front and rear rows of photovoltaic modules.

[0003] However, when the solar altitude angle is large, especially when the sun is directly overhead, part of the sunlight will be projected between the front and rear rows of photovoltaic modules, resulting in low utilization of sunlight by the photovoltaic power generation system. Utility Model Content

[0004] In order to solve the problems existing in the prior art, one of the purposes of the present utility model is to provide a photovoltaic unit.

[0005] The utility model provides the following technical solutions:

[0006] A photovoltaic unit comprising:

[0007] a bracket assembly; and

[0008] A first photovoltaic component and a second photovoltaic component are arranged in pairs on the bracket component, the first photovoltaic component and the second photovoltaic component are arranged along a first direction, the first direction is a horizontal direction, the first photovoltaic component and the second photovoltaic component are inclined relative to the first direction, the first photovoltaic component and the second photovoltaic component are symmetrical about a first plane, and the first plane is perpendicular to the first direction.

[0009] As a further optional solution for the photovoltaic unit, the support assembly includes a bottom beam and columns and diagonal braces arranged corresponding to the bottom beam;

[0010] The bottom beam extends along the first direction, and at least two bottom beams are provided, and at least two bottom beams are arranged along a second direction, and the second direction is a horizontal direction, and the second direction is perpendicular to the first direction;

[0011] The column extends in a vertical direction, and the bottom end of the column is connected to the bottom beam;

[0012] One end of the diagonal brace is connected to the bottom beam, and the other end of the diagonal brace is connected to the column. The first photovoltaic component and the second photovoltaic component are respectively arranged on the diagonal brace.

[0013] As a further optional solution for the photovoltaic unit, a top end of the first photovoltaic component is adjacent to a top end of the second photovoltaic component.

[0014] As a further optional solution for the photovoltaic unit, the bottom end of the column is abutted against the bottom beam, and the bottom end of the column has a mounting portion, the mounting portion extends along the first direction, and the mounting portion is connected to the bottom beam.

[0015] As a further optional solution for the photovoltaic unit, the bracket assembly further includes buckling pieces, which are arranged in pairs on both sides of the first photovoltaic assembly or the second photovoltaic assembly along the length direction of the diagonal support;

[0016] The buckling member includes a fixing portion and a buckling portion that are connected to each other, the fixing portion is connected to the diagonal support, and the buckling portion is buckled on the first photovoltaic component or the second photovoltaic component.

[0017] As a further optional solution for the photovoltaic unit, the photovoltaic unit also includes a float, the float extends along the second direction, there are at least two floats, at least two floats are arranged along the first direction, and the bottom beam is connected to the float.

[0018] As a further optional solution for the photovoltaic unit, three floating bodies are provided, and two pairs of the first photovoltaic components and the second photovoltaic components are provided, and the same pair of the first photovoltaic components and the second photovoltaic components is located between two adjacent floating bodies.

[0019] As a further optional solution for the photovoltaic unit, a groove is provided on the floating body, the groove extends along the first direction, and the bottom beam is embedded in the groove.

[0020] As a further optional solution for the photovoltaic unit, connecting parts are respectively provided at both ends of the floating body along the second direction.

[0021] Another object of the utility model is to provide a photovoltaic system.

[0022] The utility model provides the following technical solutions:

[0023] A photovoltaic system comprises a plurality of the above-mentioned photovoltaic units, wherein the plurality of photovoltaic units are arranged in an array.

[0024] The embodiments of the present invention have the following beneficial effects:

[0025] In the above photovoltaic unit, the first photovoltaic assembly and the second photovoltaic assembly arranged along the first direction are symmetrical about the first plane perpendicular to the first direction. Therefore, when the first photovoltaic assembly and the second photovoltaic assembly are both tilted relative to the first direction, there is no height difference between the side of the first photovoltaic assembly close to the second photovoltaic assembly and the side of the second photovoltaic assembly close to the first photovoltaic assembly, and there will not be a situation where one photovoltaic assembly in front blocks the other photovoltaic assembly in the back. As a result, the spacing between the first photovoltaic assembly and the second photovoltaic assembly can be greatly reduced, and no matter how large the solar altitude angle is, it can be ensured that most of the sunlight is projected on the first photovoltaic assembly and the second photovoltaic assembly, so that the above photovoltaic unit has a higher utilization rate of sunlight.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 The overall structure diagram of a photovoltaic unit provided by an embodiment of the utility model is shown;

[0029] Figure 2 A front view of a photovoltaic unit provided by an embodiment of the utility model is shown;

[0030] Figure 3 A schematic diagram showing the connection relationship between a column and a bottom beam in a photovoltaic unit provided by an embodiment of the utility model is shown;

[0031] Figure 4 A schematic diagram showing the connection relationship between a diagonal support and a photovoltaic assembly in a photovoltaic unit provided by an embodiment of the utility model is shown;

[0032] Figure 5 A schematic diagram showing the connection relationship between a bottom beam and a floating body in a photovoltaic unit provided by an embodiment of the utility model is shown;

[0033] Figure 6 The figure shows an overall structural diagram of a photovoltaic system provided by an embodiment of the utility model.

[0034] Description of main component symbols:

[0035] 10-photovoltaic unit; 100-bracket assembly; 110-bottom beam; 120-column; 121-installation portion; 130-diagonal brace; 131-first diagonal brace; 132-second diagonal brace; 140-buckle; 141-fixing portion; 142-buckle portion; 200-first photovoltaic module; 300-second photovoltaic module; 400-floating body; 410-groove; 420-connecting portion; X-first direction; Y-second direction; S-first plane. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] Example

[0042] See also Figure 1 The present embodiment provides a photovoltaic unit 10, specifically a photovoltaic unit arranged in a herringbone pattern. The photovoltaic unit 10 includes a support assembly 100 and a first photovoltaic assembly 200 and a second photovoltaic assembly 300 arranged in pairs on the support assembly 100.

[0043] The first photovoltaic assembly 200 and the second photovoltaic assembly 300 are arranged along a first direction X. The first direction X is a horizontal direction, and the first photovoltaic assembly 200 and the second photovoltaic assembly 300 are arranged obliquely relative to the first direction X. In addition, the first photovoltaic assembly 200 and the second photovoltaic assembly 300 are symmetrical about a first plane S, and the first plane S is perpendicular to the first direction X.

[0044] It can be understood that in a photovoltaic unit 10, the first photovoltaic assembly 200 and the second photovoltaic assembly 300 can be provided in a pair, or in two pairs, three pairs or more, and the number of the first photovoltaic assembly 200 and the number of the second photovoltaic assembly 300 are always equal. The first photovoltaic assembly 200 and the second photovoltaic assembly 300 of the same pair are arranged along the first direction X, and the two adjacent pairs of the first photovoltaic assembly 200 and the second photovoltaic assembly 300 can be arranged along the first direction X or in other directions, which is not limited in this embodiment.

[0045] Exemplarily, the first direction X is a north-south direction.

[0046] In the above photovoltaic unit 10, the first photovoltaic assembly 200 and the second photovoltaic assembly 300 arranged along the first direction X are symmetrical about the first plane S perpendicular to the first direction X. Therefore, when the first photovoltaic assembly 200 and the second photovoltaic assembly 300 are both tilted relative to the first direction X, there is no height difference between the side of the first photovoltaic assembly 200 close to the second photovoltaic assembly 300 and the side of the second photovoltaic assembly 300 close to the first photovoltaic assembly 200, and there will not be a situation where one photovoltaic assembly in front blocks the other photovoltaic assembly in the back. As a result, the spacing between the first photovoltaic assembly 200 and the second photovoltaic assembly 300 can be greatly reduced, and no matter how large the solar altitude angle is, it can ensure that most of the sunlight is projected on the first photovoltaic assembly and the second photovoltaic assembly 300, so that the above photovoltaic unit 10 has a higher utilization rate of sunlight.

[0047] See also Figure 2 In some embodiments, the support assembly 100 includes a bottom beam 110 and columns 120 and diagonal braces 130 corresponding to the bottom beam 110. The columns 120 and diagonal braces 130 corresponding to the bottom beam 110 specifically refer to that each bottom beam 110 is provided with columns 120 and diagonal braces 130.

[0048] Specifically, the bottom beam 110 extends along the first direction X. At least two bottom beams 110 are provided, and the at least two bottom beams 110 are arranged along the second direction Y. The second direction Y is a horizontal direction, and the second direction Y is perpendicular to the first direction X.

[0049] The column 120 extends in a vertical direction, and the bottom end of the column 120 is connected to the bottom beam 110 .

[0050] One end of the diagonal brace 130 is connected to the bottom beam 110 , and the other end of the diagonal brace 130 is connected to the column 120 . The first photovoltaic assembly 200 and the second photovoltaic assembly 300 are respectively disposed on the diagonal brace 130 .

[0051] It can be understood that the column 120 raises one end of the diagonal brace 130 so that a certain inclination angle is formed between the diagonal brace 130 and the bottom beam 110, thereby making the first photovoltaic component 200 and the second photovoltaic component 300 arranged on the diagonal brace 130 inclined relative to the first direction X respectively.

[0052] In addition, the diagonal brace 130 includes a first diagonal brace 131 and a second diagonal brace 132 , and the first diagonal brace 131 and the second diagonal brace 132 are arranged along the first direction X. The first photovoltaic assembly 200 is disposed on the first diagonal brace 131 , and the second photovoltaic assembly 300 is disposed on the second diagonal brace 132 .

[0053] See also Figure 3 In some embodiments, the bottom end of the column 120 is abutted against the bottom beam 110 , and the bottom end of the column 120 has a mounting portion 121 . The mounting portion 121 extends along the first direction X, and the mounting portion 121 is connected to the bottom beam 110 .

[0054] When assembling the photovoltaic unit 10 , the column 120 is directly connected to the bottom beam 110 , so that the structure of the photovoltaic unit 10 is simpler and the installation is more convenient.

[0055] In contrast, the support columns in existing photovoltaic brackets are often connected to the support beams below through connectors, which have complex structures and cumbersome installation steps.

[0056] Exemplarily, the mounting portion 121 is bolted and fixed to the bottom beam 110 .

[0057] See also Figure 4In some embodiments, the support assembly 100 further includes a pressing member 140. The pressing members 140 are arranged in pairs on both sides of the first photovoltaic assembly 200 or the second photovoltaic assembly 300 along the length direction of the diagonal support 130, and the pressing member 140 is composed of a fixing portion 141 and a pressing portion 142 connected to each other.

[0058] Taking the first photovoltaic assembly 200 as an example, the buckling members 140 are arranged in pairs on both sides of the first photovoltaic assembly 200 along the length direction of the first diagonal brace 131. The fixing portion 141 is connected to the first diagonal brace 131, and the buckling portion 142 buckles on the first photovoltaic assembly 200, thereby pressing the first photovoltaic assembly 200 against the surface of the first diagonal brace 131, so that the first photovoltaic assembly 200 and the first diagonal brace 131 remain relatively fixed.

[0059] Exemplarily, the fixing portion 141 is bolted and fixed to the first diagonal brace 131 .

[0060] In some embodiments, one end of the first diagonal brace 131 away from the second diagonal brace 132 is connected to the bottom beam 110, and one end of the first diagonal brace 131 close to the second diagonal brace 132 is connected to the column 120. Correspondingly, one end of the second diagonal brace 132 away from the first diagonal brace 131 is connected to the bottom beam 110, and one end of the second diagonal brace 132 close to the first diagonal brace 131 is connected to the column 120.

[0061] At this time, the top of the first photovoltaic component 200 is adjacent to the top of the second photovoltaic component 300 , and the first photovoltaic component 200 and the second photovoltaic component 300 are arranged back to back.

[0062] On this basis, the first diagonal brace 131 and the second diagonal brace 132 can be connected to the same column 120 , further simplifying the structure of the photovoltaic unit 10 .

[0063] In other embodiments, one end of the first diagonal brace 131 close to the second diagonal brace 132 is connected to the bottom beam 110, and one end of the first diagonal brace 131 away from the second diagonal brace 132 is connected to the column 120. Correspondingly, one end of the second diagonal brace 132 close to the first diagonal brace 131 is connected to the bottom beam 110, and one end of the second diagonal brace 132 away from the first diagonal brace 131 is connected to the column 120.

[0064] At this time, the bottom end of the first photovoltaic component 200 is adjacent to the bottom end of the second photovoltaic component 300 , and the first photovoltaic component 200 and the second photovoltaic component 300 are arranged opposite to each other.

[0065] Please also read Figure 1 and Figure 5In some embodiments, the photovoltaic unit 10 is a floating photovoltaic unit 10, which further includes a floating body 400. The floating body 400 extends along the second direction Y, and at least two floating bodies 400 are provided, and at least two floating bodies 400 are arranged along the first direction X. Accordingly, the bottom beam 110 is connected to the floating body 400.

[0066] It can be understood that the bottom beam 110 extends along the first direction X and is arranged along the second direction Y, and the floating body 400 extends along the second direction Y and is arranged along the first direction X. After the bottom beam 110 is connected to the floating body 400, the entire photovoltaic unit 10 is connected as a whole, with high stability and simple structure.

[0067] In contrast, existing floating photovoltaic systems often use transverse support beams and longitudinal support beams to form a mesh structure to achieve sufficient stability, and at the same time fix the float 400 under the mesh structure, which has a more complex structure, is not easy to install, and has a higher cost.

[0068] Furthermore, a groove 410 is disposed on the floating body 400 , and the groove 410 extends along the first direction X. In addition, the bottom beam 110 is embedded in the groove 410 .

[0069] After installation is completed, the side wall of the groove 410 can limit the bottom beam 110 to prevent the bottom beam 110 from moving along the second direction Y relative to the floating body 400, and the connection stability is higher.

[0070] Furthermore, connecting parts 420 are respectively provided at both ends of the floating body 400 along the second direction Y.

[0071] It can be understood that when a plurality of photovoltaic units 10 are assembled together, the floating bodies 400 of two adjacent photovoltaic units 10 can be connected via the connecting portion 420 , thereby connecting the photovoltaic units 10 into one.

[0072] In some embodiments, three floating bodies 400 are provided, two pairs of first photovoltaic components 200 and second photovoltaic components 300 are provided, and the same pair of first photovoltaic components 200 and second photovoltaic components 300 is located between two adjacent floating bodies 400 .

[0073] Specifically, along the first direction X, one pair of the first photovoltaic assembly 200 and the second photovoltaic assembly 300 is located between the first floating body 400 and the second floating body 400 , and another pair of the first photovoltaic assembly 200 and the second photovoltaic assembly 300 is located between the second floating body 400 and the third floating body 400 .

[0074] Using three floats 400 to support four photovoltaic modules can reduce the number of floats 400 as much as possible while ensuring sufficient buoyancy, thereby saving costs.

[0075] In summary, the photovoltaic unit 10 symmetrically arranges the first photovoltaic assembly 200 and the second photovoltaic assembly 300 so that there is no height difference between the side of the first photovoltaic assembly 200 close to the second photovoltaic assembly 300 and the side of the second photovoltaic assembly 300 close to the first photovoltaic assembly 200, and there will not be a situation where one photovoltaic assembly in front blocks the other photovoltaic assembly in the back. As a result, the spacing between the first photovoltaic assembly 200 and the second photovoltaic assembly 300 can be greatly reduced, and no matter how large the solar altitude angle is, it can ensure that most of the sunlight is projected on the first photovoltaic assembly and the second photovoltaic assembly 300, so that the photovoltaic unit 10 has a higher utilization rate of sunlight.

[0076] See also Figure 6 This embodiment also provides a photovoltaic system, including a plurality of the above-mentioned photovoltaic units 10, and the plurality of photovoltaic units 10 are arranged in an array.

[0077] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0078] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0079] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A photovoltaic unit, characterized in that: include: Bracket assembly; as well as A first photovoltaic component and a second photovoltaic component are arranged in pairs on the bracket component, the first photovoltaic component and the second photovoltaic component are arranged along a first direction, the first direction is a horizontal direction, the first photovoltaic component and the second photovoltaic component are inclined relative to the first direction, the first photovoltaic component and the second photovoltaic component are symmetrical about a first plane, and the first plane is perpendicular to the first direction.

2. The photovoltaic unit according to claim 1, characterized in that: The support assembly includes a bottom beam and columns and diagonal braces arranged corresponding to the bottom beam; The bottom beam extends along the first direction, and at least two bottom beams are provided, and at least two bottom beams are arranged along a second direction, and the second direction is a horizontal direction, and the second direction is perpendicular to the first direction; The column extends in a vertical direction, and the bottom end of the column is connected to the bottom beam; One end of the diagonal brace is connected to the bottom beam, and the other end of the diagonal brace is connected to the column. The first photovoltaic component and the second photovoltaic component are respectively arranged on the diagonal brace.

3. The photovoltaic unit according to claim 2, characterized in that: The top end of the first photovoltaic component is adjacent to the top end of the second photovoltaic component.

4. The photovoltaic unit according to claim 2, characterized in that: The bottom end of the column is abutted against the bottom beam. The bottom end of the column has a mounting portion, which extends along the first direction and is connected to the bottom beam.

5. The photovoltaic unit according to claim 2, characterized in that: The support assembly further includes buckling pieces, which are arranged in pairs on both sides of the first photovoltaic assembly or the second photovoltaic assembly along the length direction of the diagonal support; The buckling member includes a fixing portion and a buckling portion that are connected to each other, the fixing portion is connected to the diagonal support, and the buckling portion is buckled on the first photovoltaic component or the second photovoltaic component.

6. The photovoltaic unit according to any one of claims 2 to 5, characterized in that: The photovoltaic unit further includes a floating body, the floating body extends along the second direction, at least two floating bodies are provided, at least two floating bodies are arranged along the first direction, and the bottom beam is connected to the floating body.

7. The photovoltaic unit according to claim 6, characterized in that: There are three floating bodies, and two pairs of the first photovoltaic components and the second photovoltaic components are provided. The same pair of the first photovoltaic components and the second photovoltaic components is located between two adjacent floating bodies.

8. The photovoltaic unit according to claim 6, characterized in that: The floating body is provided with a groove, the groove extends along the first direction, and the bottom beam is embedded in the groove.

9. The photovoltaic unit according to claim 6, characterized in that: The floating body is provided with connecting parts at both ends along the second direction.

10. A photovoltaic system, characterized in that: The invention comprises a plurality of photovoltaic units according to any one of claims 1 to 9, wherein the plurality of photovoltaic units are arranged in an array.

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