Photovoltaic device, photovoltaic system and control method for both

Abstract

The application relates to a photovoltaic device, a photovoltaic system and a control method of both, wherein the photovoltaic device is built on a land area where plants grow, and the photovoltaic device comprises: a plurality of columns, the lower end of each column is fixedly buried in the ground of the land area; a first support connected to the plurality of columns and located above the plants; a plurality of photovoltaic panels, each photovoltaic panel is connected to the first support in a manner capable of rotating around a corresponding first rotation axis; and a first power device for driving the plurality of photovoltaic panels to rotate around the corresponding first rotation axis respectively, and thereby adjusting the sunlight projection area between two adjacent photovoltaic panels towards the plants. The photovoltaic device of the application is built on the plant growth area, which can improve the land utilization rate without causing great influence on the normal development of the plants.

Description

Technical Field

[0001] This application relates to the field of photovoltaics, specifically to a photovoltaic device, a photovoltaic system, and a method for controlling both. Background Technology

[0002] With the development of new energy sources, the scale of photovoltaic power plant construction is rapidly expanding both domestically and internationally.

[0003] However, photovoltaic facilities occupy a large area, and if the limited land area is used only to build photovoltaic facilities, it will result in a huge waste.

[0004] This application is thus made. Summary of the Invention

[0005] The technical problem solved by this application is to propose a photovoltaic device, a photovoltaic system, and a control method for both. The photovoltaic device of this application is built in the plant growth area, which can improve land utilization without having a significant impact on the normal development of plants.

[0006] The technical solution of this application is:

[0007] In a first aspect, this application proposes a photovoltaic device, which is constructed in a terrestrial area where vegetation grows, and the photovoltaic device includes:

[0008] Multiple columns, each of which is fixedly buried at its lower end in the ground of the land area;

[0009] A first support, which is connected to the plurality of uprights and located above the plant;

[0010] Multiple photovoltaic panels, each of which is connected to the first bracket in a manner that allows it to rotate about its respective first rotation axis;

[0011] A first power device is used to drive each of the photovoltaic panels to rotate around their respective first rotation axis, thereby adjusting the sunlight projection area towards the plant between two adjacent photovoltaic panels.

[0012] In one optional design, the plurality of photovoltaic panels are arranged along a first direction, and the plurality of first rotation axes corresponding to the plurality of photovoltaic panels are parallel to each other, and the first direction is perpendicular to the first rotation axis.

[0013] In an optional design, the photovoltaic device further includes:

[0014] The second support is fixed to the plurality of columns and located above the plant, and the first support is connected above the second support in a manner that allows it to rotate about a second axis of rotation.

[0015] The second power device is used to drive the first bracket to rotate around the second rotation axis, wherein the second rotation axis is perpendicular to the first rotation axis of each photovoltaic panel and extends in an east-west direction.

[0016] In one optional design, the second power device is connected to the first support via a second transmission assembly. The second transmission assembly includes a lead screw seat, a lead screw, and a lead screw nut. The lead screw seat is connected to the second support in a manner rotatable about a sixth rotation axis. The lead screw nut is connected to the lead screw seat in a manner rotatable about its own axis. The lead screw passes through the lead screw nut and is threadedly connected to the lead screw nut. The lead screw is rotatably connected to the first support. The sixth rotation axis is parallel to the second rotation axis.

[0017] The second power device is a third motor that is fixed to the lead screw seat and connected to the lead screw nut to drive the lead screw nut to rotate.

[0018] In an optional design, the first power device is connected to the plurality of photovoltaic panels via a first transmission assembly, the first transmission assembly comprising:

[0019] Multiple first rotating shafts are fixed to the multiple photovoltaic panels one to one, and both ends of each first rotating shaft are connected to the first bracket in a manner that allows it to rotate around its own axis.

[0020] A plurality of first rotating wheels, each of which is coaxially fixed to a plurality of first rotating shafts in a corresponding manner; and

[0021] Multiple first ropes are provided, with one first rope connecting each pair of adjacent first spools and the two most end pairs of first spools, and one end of each pair of adjacent first ropes is wrapped around and fixed to a corresponding first spool in opposite directions.

[0022] The first power device is the first motor.

[0023] In one optional design, the first support is provided with a plurality of tension pulleys, and each of the first ropes is connected to one of the tension pulleys; or / and,

[0024] Each of the first ropes includes a first rope segment, a second rope segment, and a telescopic connector connecting the first rope segment and the second rope segment.

[0025] In one optional design, the first power device includes a plurality of first motors, the plurality of first motors being respectively connected to the plurality of photovoltaic panels;

[0026] Each of the photovoltaic panels is a rectangular structure with a length of 1.5-3 meters and a width of 0.2-0.4 meters, and the length of the rectangular structure is parallel to the first axis of rotation.

[0027] In an optional design, the photovoltaic device further includes a controller that is communicatively connected to the first power device;

[0028] The controller is configured to: in response to receiving a first operation command, control the first power device to drive each of the photovoltaic panels to rotate parallel to the current direction of sunlight in real time.

[0029] In an optional design, the controller is further configured to:

[0030] In response to receiving a second operation command, the first power device is controlled to drive each photovoltaic panel to rotate to a position perpendicular to the current direction of sunlight in real time.

[0031] In response to receiving a third operation command, the first power device is controlled to drive each of the photovoltaic panels to rotate to a vertical arrangement.

[0032] Secondly, this application proposes a photovoltaic system, including multiple photovoltaic devices as described in the first aspect, wherein the first power device in the multiple photovoltaic devices is the same first motor, and the first motor is connected to a seventh rotating wheel to drive the seventh rotating wheel to rotate around its own axis;

[0033] Each of the photovoltaic devices includes:

[0034] A second rotating shaft is connected to the first bracket in a manner that allows it to rotate about a fifth rotation axis, wherein the fifth rotation axis is parallel to the first rotation axis;

[0035] The sixth rotating wheel is coaxially connected to the second rotating shaft;

[0036] The fourth rope; and

[0037] The fifth rope;

[0038] One end of the fourth rope and one end of the fifth rope are respectively wrapped around and fixed to the seventh reel in opposite directions, and the other end of the fourth rope and the other end of the fifth rope are respectively wrapped around and fixed to the sixth reel in opposite directions.

[0039] For the first rope connecting the two first spools at the far end in each of the photovoltaic devices, the first rope includes a third rope segment and a fourth rope segment, one end of the third rope segment and one end of the fourth rope segment being wrapped around and fixed to the sixth spool in opposite directions.

[0040] In one alternative design, when either the fourth or fifth rope is in a tensioned state, the other is in a relaxed state.

[0041] Thirdly, this application proposes a control method applied to a photovoltaic device as described in the first aspect or a photovoltaic system as described in the second aspect, the control method comprising:

[0042] In response to receiving a first operation command, the first power device is controlled to drive each photovoltaic panel to rotate parallel to the current direction of sunlight in real time.

[0043] An alternative design also includes:

[0044] In response to receiving a second operation command, the first power device is controlled to drive each photovoltaic panel to rotate to a position perpendicular to the current direction of sunlight in real time.

[0045] In response to receiving a third operation command, the first power device is controlled to drive each of the photovoltaic panels to rotate to a vertical arrangement.

[0046] This application has at least the following beneficial effects:

[0047] This application involves fixing the lower ends of each column to the ground in a plant-growing area to form a support base. A first bracket is then installed on this support base, and multiple rotatable photovoltaic panels are mounted on the first bracket. A first power device provides the driving force to drive each photovoltaic panel to rotate around its corresponding first rotation axis. In application, the first power device can drive each photovoltaic panel to rotate to a light-facing angle for high-power generation, or to a light-receiving angle parallel to the direction of sunlight, allowing sunlight to pass through the gaps between adjacent photovoltaic panels as much as possible to illuminate the plants below, providing them with the necessary light for growth. In application, the angle of each photovoltaic panel can be adjusted as needed to provide sufficient light to the plants below, and the angle can also be adjusted to provide shade for the plants when the sunlight is too strong. Therefore, although this photovoltaic device is built in a plant-growing area, it does not significantly affect plant development and can even provide shade protection for the plants below in special circumstances. Building this photovoltaic device in a plant-growing area efficiently utilizes limited land resources. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0049] Figure 1This is a schematic diagram of the overall structure of the photovoltaic device in Embodiment 1 of this application.

[0050] Figure 2 yes Figure 1 A schematic diagram of a local structure.

[0051] Figure 3 yes Figure 2 The diagram shows the structure from another perspective.

[0052] Figure 4 yes Figure 3 Enlarged schematic diagram of part X1.

[0053] Figure 5 yes Figure 3 A magnified view of a section in the upper right corner.

[0054] Figure 6 yes Figure 3 A structural diagram from another perspective after components such as the second support have been removed.

[0055] Figure 7 yes Figure 6 Enlarged schematic diagram of part X2.

[0056] Figure 8 yes Figure 6 A cross-sectional view after the photovoltaic panels have been removed.

[0057] Figure 9 This is a schematic diagram of the cooperation structure between the first rotating wheel and the two adjacent first ropes in Embodiment 1 of this application.

[0058] Figure 10 yes Figure 9 The diagram shows the structure from another perspective.

[0059] Figure 11 yes Figure 9 A schematic diagram of its decomposed structure.

[0060] Figure 12 This is a schematic diagram of the telescopic rod in Embodiment 1 of this application.

[0061] Figure 13 yes Figure 12 A cross-sectional view.

[0062] Figure 14 yes Figure 12 A schematic diagram of the middle sleeve.

[0063] Figure 15 yes Figure 12 Exploded view of the middle sleeve rod

[0064] Figure 16 yes Figure 3A side view of the structure shown.

[0065] Figure 17 yes Figure 16 A schematic diagram of the structure after some of the middle components have been removed or cut off.

[0066] Figure 18 This is a schematic diagram of the cooperative structure of the second motor, two telescopic rods, and the second rope in Embodiment 1 of this application.

[0067] Figure 19 This is a schematic diagram of the cooperative structure of the second motor, two telescopic rods, and the third rope in Embodiment 1 of this application.

[0068] Figure 20 This is a cross-sectional view of the telescopic connector in Embodiment 1 of this application.

[0069] Figure 21 This is an exploded structural diagram of the telescopic connector in Embodiment 1 of this application.

[0070] Figure 22 This is a partial structural schematic diagram of the photovoltaic device in Embodiment 2 of this application.

[0071] Figure 23 yes Figure 22 A magnified view of part X3 in the middle.

[0072] Figure 24 yes Figure 22 A schematic diagram of the structure after some of the middle components have been removed.

[0073] Figure 25 yes Figure 22 A side view structural diagram.

[0074] Figure 26 yes Figure 25 A partial structural diagram.

[0075] Figure 27 This is a partial structural schematic diagram of the photovoltaic device in Embodiment 3 of this application.

[0076] Figure 28 This is a schematic diagram of the photovoltaic system in Embodiment 4 of this application, wherein at least the support column is removed.

[0077] Figure 29 yes Figure 28 A magnified view of a portion of the image.

[0078] Figure 30 yes Figure 28 A schematic diagram of the structure after some components have been removed, in which at least the second motor and related parts have been removed.

[0079] Figure 31 yes Figure 30Enlarged schematic diagram of part X4 in the middle.

[0080] Figure 32 yes Figure 30 Enlarged schematic diagram of part X5.

[0081] Figure 33 yes Figure 28 A schematic diagram of the structure after some components have been removed, in which at least the first motor and related parts have been removed.

[0082] Figure 34 yes Figure 33 Enlarged schematic diagram of part X6.

[0083] Figure 35 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0084] Figure 36 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0085] Figure 37 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0086] Figure 38 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0087] Figure 39 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0088] Figure 40 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0089] Figure 41 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0090] Figure 42 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0091] Figure 43This is one of the schematic diagrams of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0092] Figure 44 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0093] Figure 45 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0094] Figure 46 This is a schematic diagram of the cooperative structure of the first motor, the sixth wheel, the seventh wheel, the fourth rope, the fifth rope, and the photovoltaic panel in Embodiment 4 of this application.

[0095] Figure 47 This is a flowchart of the control method in Embodiment 5 of this application.

[0096] Explanation of reference numerals in the attached figures:

[0097] a-plant, b-ground;

[0098] C1 - First axis of rotation, C2 - Second axis of rotation, C3 - Third axis of rotation, C4 - Fourth axis of rotation, C5 - Fifth axis of rotation, C6 - Sixth axis of rotation, C7 - Seventh axis of rotation, C8 - Eighth axis of rotation;

[0099] F1 - First direction, F2 - Second direction, F3 - Third direction;

[0100] 1-First support, 2-Second support, 3-Column, 4-Photovoltaic panel, 5-First motor, 6-First rope, 7-Guide sleeve, 8-Guide rod, 9-Screw seat, 10-Screw, 11-First shaft, 12-First wheel, 13-Second motor, 14-Second shaft, 15-Third motor, 16-Gear, 17-Guide wheel, 18-Second rope, 19-Third rope, 20-Sleeve, 21-Sleeve rod, 22-Second wheel, 23-Third wheel, 24-Fourth wheel, 25-Fifth wheel, 26-Sixth wheel, 27-Seventh wheel, 28-Fourth rope, 29-Fifth rope, 30-Eighth wheel, 31-Ninth wheel, 32-Tenth wheel, 33-Sixth rope;

[0101] 601 - First rope segment, 602 - Second rope segment, 603 - Telescopic connector, 604 - Third rope segment, 605 - Fourth rope segment;

[0102] 6031 - First component, 6031a - First pivot pin, 6031b - First threaded hole;

[0103] 6032 - Second component, 6032a - First threaded section, 6032b - Second threaded section, 6032c - External hexagonal section;

[0104] 6033 - Third component, 6033a - Second threaded hole, 6033b - Third threaded hole;

[0105] 6034 - Fourth component, 6034a - Second pivot pin, 6034b - Third threaded section;

[0106] 6035 - Nut;

[0107] 6036 - Compression Spring;

[0108] 6037 - External threaded sleeve. Detailed Implementation

[0109] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0110] In the description of this application and the claims, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects. Furthermore, the words "one" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates not less than two.

[0111] In the description of this application and the claims, the terms "connection," "installation," "fixation," and "reception," unless otherwise specified, should be interpreted broadly. For example, "connection" can mean a separate connection or an integral connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean a non-detachable connection or a detachable connection. As another example, "reception" does not necessarily mean complete containment; this concept also includes the containment of a portion that protrudes externally. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application based on the specific circumstances.

[0112] In the description of this application and the claims, if terms such as "above," "below," or "horizontal" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, they are only for the purpose of clearly and simply describing this application, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. These directional terms are relative concepts used for relative description and clarification, and may change accordingly depending on the orientation of the components in the drawings. For example, if the device in the drawings is flipped, an element described as "below" other elements will be positioned "above" other elements.

[0113] In the description of this application and the claims, the terms "in sequence" or "in order," such as the phrase "A, B, C arranged in sequence," only indicate the order of arrangement of elements A, B, and C, and do not exclude the possibility of arranging other elements between A and B and / or between B and C.

[0114] In the description of this application and the claims, the terms "stacked" or "laminated" include not only cases where the layers are in contact with each other (or laminated), but also cases where another layer is sandwiched between them (or laminated).

[0115] In the description of this application and the claims, the terms "based on" or "according to" are used to describe one or more factors that influence the determination. This term does not exclude additional factors influencing the determination. That is, the determination may be based solely on these factors or at least partially on them. For example, the phrase "based on A to determine B" means that A is a factor influencing the determination of B, and this phrase does not exclude the possibility that the determination of B may also be based on C.

[0116] In the description of this application and the claims, the term "in response to" and related terms mean that one signal or event is affected to some extent by another signal or event, but not necessarily completely or directly. If event A occurs "in response to" event B, then A may be directly or indirectly responsive to B. For example, the occurrence of B may ultimately lead to the occurrence of A, but there may be other intermediate events and / or conditions. In other cases, B may not necessarily lead to the occurrence of A, and A may occur even if B has not yet occurred. Furthermore, the term "in response to" can also mean "at least partially responsive to". The term "determine" broadly covers a wide variety of actions, including calculation, computation, processing, derivation, investigation, search (e.g., searching in a table, database, or other data structure), discovery, and similar actions, as well as receiving (e.g., receiving information), accessing (e.g., accessing data in memory), and similar actions, as well as parsing, selecting, choosing, building, and similar actions, etc. Definitions of other terms will be given in the description below.

[0117] In the description of this application specification and claims, the term "if" is generally interchangeable with "when," "at," "in response to determination," or "in response to detection," depending on the context.

[0118] In the description of this application specification and claims, the term "configured as" is generally interchangeable with "having the ability to," "designed to," "used for," or "capable of," depending on the context.

[0119] Embodiments of this application will now be described with reference to the accompanying drawings.

[0120] <Example 1>

[0121] Figures 1 to 21 A specific embodiment of the photovoltaic device of this application is shown, which is erected in a land area where plants a grow. The photovoltaic device mainly includes: multiple columns 3, a first support frame 1, multiple photovoltaic panels 4, and a first power unit. Wherein:

[0122] The lower end of each column 3 is fixedly buried in the ground b of the aforementioned land area. A first support 1 is connected to multiple columns 3 and located above the plant a. The weight of the first support 1 is supported by the multiple columns 3. Obviously, crossbars or other reinforcing components can be connected between the columns 3 to improve the structural stability of the photovoltaic device; this embodiment does not limit this. Multiple photovoltaic panels 4 are connected to the first support 1, and the weight of the photovoltaic panels 4 is supported by the first support 1. Each photovoltaic panel 4 can rotate relative to the first support 1 around its corresponding first rotation axis C1. A first power device is used to drive each photovoltaic panel 4 to rotate around its corresponding first rotation axis C1, thereby adjusting the sunlight projection area towards the plant a between two adjacent photovoltaic panels 4.

[0123] In this embodiment, the lower ends of each column 3 are fixedly buried in the ground b of the land area where plants a are growing, thus forming a supporting base. A first bracket 1 is then installed on this supporting base, and multiple rotatable photovoltaic panels 4 are mounted on the first bracket 1. A first power device provides driving force to drive each photovoltaic panel 4 to rotate around its corresponding first rotation axis C1. In application, the first power device can drive each photovoltaic panel 4 to rotate to a light-facing angle to achieve high-power power generation, or it can drive each photovoltaic panel 4 to rotate to a light-receiving angle parallel to the direction of sunlight, so that sunlight passes through the gaps between adjacent photovoltaic panels 4 as much as possible to illuminate the plants a below, providing the necessary light for plant growth. Therefore, although this photovoltaic device is built in a plant growth area, it does not significantly affect plant growth, and the angle of each photovoltaic panel 4 can be adjusted when necessary to provide sufficient light to the plants below. Thus, for areas with limited land area b, this photovoltaic device can be built in the plant growth area of ​​that area (e.g., urban road areas with plants planted on both sides or in the middle, or agricultural areas where crops are grown), making full use of limited land resources.

[0124] Please refer to Figure 1 and Figure 6 In this embodiment, multiple photovoltaic panels 4 are arranged along the first direction F1, and the multiple first rotation axes C1 corresponding to the multiple photovoltaic panels 4 are parallel to each other. Moreover, the first direction F1 is perpendicular to each first rotation axis C1. This not only facilitates the construction of the photovoltaic device, but also improves the structural compactness of the photovoltaic device.

[0125] In this embodiment, each photovoltaic panel 4 is a long rectangular structure with a length of 1.5-3 meters and a width of 0.2-0.4 meters, and the length of the rectangular structure is parallel to the first rotation axis C1.

[0126] The photovoltaic panel 4 can only achieve angle adjustment in one direction when rotating around the first rotation axis C1, and cannot simultaneously track the longitude and latitude of sunlight. Therefore, the photovoltaic device is also equipped with a second support 2 and a second power device, so that each photovoltaic panel 4 can rotate around two mutually perpendicular rotation axes, thereby achieving real-time vertical tracking of sunlight by the photovoltaic panel 4. Specifically: the second support 2 is fixed to multiple columns 3 and located above the plant a, and the weight of the second support 2 is supported by the multiple columns 3. The first support 1 is connected above the second support 2 in a manner that allows it to rotate around the second rotation axis C2. The weight of the first support 1 is directly supported by the second support 2 and indirectly supported by the multiple columns 3. The second power device is used to drive the first support 1 to rotate around the aforementioned second rotation axis C2, wherein the second rotation axis C2 is perpendicular to the first rotation axis C1 of each photovoltaic panel 4.

[0127] In this embodiment, the aforementioned second rotation axis C2 extends in the east-west direction. Therefore, by controlling the first support 1 to rotate around the second rotation axis C2, the photovoltaic panel 4 can track the latitude of sunlight; and by controlling the photovoltaic panel 4 to rotate around the first rotation axis C1, the photovoltaic panel 4 can track the longitude of sunlight. The first direction F1 is parallel to the second rotation axis C2.

[0128] Both the first support 1 and the second support 2 are positioned above plant a, without significantly restricting the growth space of plant a below. Moreover, when plant a below becomes too lush, maintenance personnel can use the second support 2 as a working platform to prune plant a. The height of the first support 1 and the second support 2 from the ground b is generally not less than 5 meters.

[0129] In this embodiment, the aforementioned first power device is connected to multiple photovoltaic panels 4 via a first transmission assembly. The first transmission assembly includes multiple first rotating shafts 11, multiple first rotating wheels 12, and multiple first ropes 6. The multiple first rotating shafts 11 are fixed to the multiple photovoltaic panels 4 one-to-one, and both ends of each first rotating shaft 11 are connected to the first support 1 in a manner that allows it to rotate around its own axis (coinciding with the aforementioned first rotation axis C1). The first rotating shaft 11 is an intermediate component connecting the photovoltaic panels 4 and the first support 1. The multiple first rotating wheels 12 are coaxially fixed to the multiple first rotating shafts 11 one-to-one. A first rope 6 is connected between each pair of adjacent first rotating wheels 12 and between the two outermost first rotating wheels 12, and one end of each pair of adjacent first ropes 6 is wrapped around and fixed to a corresponding first rotating wheel 12 in opposite directions. Thus, the aforementioned multiple first rotating shafts 11, multiple first rotating wheels 12, and multiple first ropes 6 together constitute a rotary structure. When one of the first rotating wheels 12 rotates under the action of power, the first rotating wheel 12 will pull the adjacent second first rotating wheel 12 to rotate through the first rope 6 fixedly connected to it. Then, the second first rotating wheel 12 will drive the adjacent third first rotating wheel 12 to rotate, and so on, driving each first rotating wheel 12 to rotate, thereby adjusting the angle of each photovoltaic panel 4.

[0130] Please refer to Figures 9 to 10 and combined Figure 5 , Figure 7 and Figure 8 The phrase "encircling and fixing to in opposite directions" means that for two adjacent first ropes 6, one end of one first rope 6 is encircled and fixed to the corresponding first wheel 12 in a clockwise direction, and one end of the other first rope 6 is encircled and fixed to the first wheel 12 in a counterclockwise direction. "Encircling" includes both full circumference and partial circumference (e.g., half circumference), and this application does not limit the definition.

[0131] However, if the end of each first rope 6 is wrapped around the corresponding first reel 12 in a full circumference (greater than 360°), the following drawback will exist:

[0132] Under the power of the first drive device, the first rope 6 may pull the first rotating wheel 12 to rotate a full circle or even several circles (the first rotating wheel 12 unwinds the first rope 6), thereby causing the photovoltaic panel 4 to rotate a full circle. To ensure that the photovoltaic panel 4 can rotate a full circle, the length of the photovoltaic panel 4 must be less than the length of the first rotating shaft 7; otherwise (i.e., the length of the photovoltaic panel 4 is greater than the length of the first rotating shaft 7), the photovoltaic panel 4 will inevitably be damaged by the obstruction and collision of the first support 1. Reducing the length of the photovoltaic panel 4 not only reduces the power generation of the photovoltaic device but also increases the overall cost of the photovoltaic device.

[0133] Based on the above reasons, in order to control the rotation angle range of the photovoltaic panel, this embodiment is designed as follows: In any working state, the sum of the circumference angles of at least two partially adjacent first ropes 6 around a corresponding first wheel 12 is not greater than a certain set value, and the set value is <360 degrees. When one of the first ropes 6 pulls the corresponding first wheel 12 to rotate, the first rope 6 is unwound from the first wheel 12, and its circumference angle (or winding angle) around the first wheel 12 gradually decreases. After the first rope 6 is unwound to the point where its end is straightened and the direction of the tension on the first wheel 12 passes through the rotation axis of the first wheel 12, the tension of the first rope 6 on the first wheel 12 will not generate a rotational torque. No matter how much tension the first rope 6 applies to the first wheel 12 at this time, the first wheel 12 will no longer continue to rotate due to the tension, and the unwinding angle of the first wheel 12 is approximately its original circumference angle. Similarly, the unwinding angle of the other first rope 6 adjacent to the first rope 6 also has the same characteristics. Therefore, if the sum of the circumference angles of one end of two adjacent first ropes 6 on the corresponding first wheel 12 is less than 360 degrees, it can be guaranteed that the rotation angle of the corresponding first wheel 12 is generally less than 360 degrees, and the rotation angle of the photovoltaic panel 4 is less than 360 degrees.

[0134] The "working state" in "under any working state" refers to the state of the photovoltaic device when it is in normal use, excluding the state during maintenance, and even more so the state when it is damaged.

[0135] It is understandable that the smaller the maximum rotation angle of the photovoltaic panel 4, the lower the interference of the first support 1 on the movement of the photovoltaic panel 4, and the easier it is to set the position of the photovoltaic panel 4 on the first support 1. Coincidentally, the angle of sunlight does not change by more than 180° throughout the day. Therefore, in another embodiment, the setting value is specifically 180 degrees. In any working state, the sum of the circumference angles of at least two partially adjacent first ropes 6 on the corresponding first rotating wheel 12 is not greater than 180 degrees. It is understood that "at least two partially adjacent first ropes" means that it is not necessary but not excluded that all two adjacent first ropes (or each pair of adjacent first ropes) have the above characteristics.

[0136] Please refer to again Figure 9 and Figure 10 To prevent two adjacent first ropes 6 from interfering with each other during winding and unwinding, each of the aforementioned first wheels 12 is equipped with two rope grooves, and one end of each of the two adjacent first ropes 6 is wound around these two rope grooves respectively.

[0137] In this embodiment, the second power device is connected to the first support 1 via a second transmission assembly, and the second power device is a second motor 13. The second transmission assembly includes a second rope 18, a third rope 19, and two telescopic rods, which are spaced apart along a direction parallel to the aforementioned second rotation axis C2. Each telescopic rod includes a sleeve 20 and a rod 21 extending along the second direction F2. The rod 21 has a first end and a second end disposed opposite to each other in the aforementioned second direction F2. The first end is movably inserted into the sleeve 20 along the aforementioned second direction F2, and the second end is located outside the sleeve 20 and is connected to the first support 1 in a manner that allows it to rotate around the fourth rotation axis C4. The sleeve 20 is connected to the second support 2 in a manner that allows it to rotate around the third rotation axis C3. A second rotating wheel 22 is rotatably connected inside the sleeve 20, a fourth rotating wheel 24 and a fifth rotating wheel 25 are rotatably connected outside the sleeve 20, and a third rotating wheel 23 housed inside the sleeve 20 is rotatably connected to the rod 21.

[0138] Please refer to Figure 18 and combined Figure 3 , Figures 12 to 17 One end of the second rope 18 is fixed to the first telescopic pole. Figure 3 The sleeve 20 of the telescopic rod on the right side of the middle section, and the other end of the sleeve passes sequentially around the fifth rotating wheel 25, the third rotating wheel 23 and the fourth rotating wheel 24 of the first telescopic rod, and the second telescopic rod ( Figure 3 The fifth reel 25, third reel 23, and fourth reel 24 of the telescopic pole (on the left side) are then surrounded and fixed to the rope take-up and take-up reel for taking up and taking down the second rope 18. The rope take-up and take-up reel is driven to rotate by a second motor 13, which is fixed to the sleeve 20 of the second telescopic pole.

[0139] Reference Figure 19 and combined Figure 3 , Figures 12 to 17 One end of the third rope 19 is fixedly connected to the sleeve 20 of the first telescopic rod, and the other end passes sequentially around the third pulley 23, the second pulley 22, and the fourth pulley 24 of the first telescopic rod, and the fifth pulley 25, the second pulley 22, the third pulley 23, the second pulley 22 (twice), and the fourth pulley 24 of the second telescopic rod, before being wound around and fixed to the aforementioned rope take-up and release pulley in opposite directions. It can be understood that the second rope 18 and the third rope 19 have opposite winding directions on the rope take-up and release pulley, thus ensuring that when one rope is wound up, the other rope is released.

[0140] To tilt the first bracket 1 upwards, the second motor 13 is controlled to rotate forward, thereby driving... Figure 18 The left end of the second rope 18 is wound up, and the wound second rope 18 pulls the two third pulleys 23 of the two telescopic rods. Figure 18 The rods rotate and rise, causing the left and right sliding rods to extend out of the two sleeves 20 respectively, increasing the length of the two telescopic rods and causing the first support 1 to rotate upward around the second rotation axis C2. During the process of increasing the length of the two telescopic rods, the two third rotating wheels 23 in the two telescopic rods will pull the third rope 19 upward, so that the third rope 19 released from the rope take-up wheel will not become completely loose.

[0141] To lower the first support 1 by a certain angle, the second motor 13 is controlled to reverse, thereby driving... Figure 19 The left end of the third rope 19 is wound up, and the wound third rope 19 pulls the two third pulleys 23. Figure 19 The system rotates and descends, causing the left and right sliding rods to retract into the two sleeves 20 respectively. This reduces the length of the two telescopic rods, causing the first support 1 to rotate downwards around the second rotation axis C2. As the length of the two telescopic rods decreases, the two third rotating wheels 23 in the two telescopic rods pull the second rope 18 downwards, preventing the second rope 18 released from the rope take-up and release wheel from becoming completely loose.

[0142] To avoid interference between the second rope 18 and the third rope 19 during winding and unwinding, the aforementioned rope winding and unwinding reel can also be equipped with two rope grooves, with one end of the second rope 18 and the third rope 19 respectively wound into these two rope grooves.

[0143] In this embodiment, the first power device is an electric motor, specifically... Figure 2 and Figure 3The first motor 5 is shown in the diagram. The aforementioned first transmission assembly also includes a second rotating shaft 14, a sixth rotating wheel 26, and a gear 16. The second rotating shaft 14 is connected to the first bracket 1 in a manner rotatable about a fifth rotation axis C5, wherein the fifth rotation axis C5 is parallel to the first rotation axis C1, and the fifth rotation axis coincides with the axis of the second rotating shaft 14 itself. The sixth rotating wheel 26 and the gear 16 are both coaxially connected to the second rotating shaft 14. The first motor 5, as a first power device, is meshed with the aforementioned gear 16 through a gear 16 transmission mechanism. During operation, the first motor 5 is driven to rotate about the fifth rotation axis C5 via the gear 16, thereby driving the sixth rotating wheel 26 to rotate.

[0144] Please refer to the above as well. Figure 7 and Figure 8 The first rope 6, connecting the two first rotating wheels 12 at the far end, includes a third rope segment 604 and a fourth rope segment 605. One end of the third rope segment 604 and one end of the fourth rope segment 605 are respectively wrapped around and fixed to the sixth rotating wheel 26 in opposite directions. When the sixth rotating wheel 26 rotates under the drive of the first motor 5, it then drives each of the first rotating wheels 12 to rotate via the first rope 6, thereby adjusting the angle of each photovoltaic panel 4.

[0145] In another embodiment, the second rotating shaft 14 is not provided, and the first motor 5, which is the first power device, is directly connected to one of the first rotating wheels 12.

[0146] In another embodiment, the first power device includes a plurality of first motors 5, which are respectively connected to a plurality of photovoltaic panels 4. That is, the first power device for driving the rotation of the plurality of photovoltaic panels 4 no longer has only one first motor 5, but multiple first motors 5, which drive the plurality of photovoltaic panels 4 to rotate around their respective first rotation axes C1 in a one-to-one correspondence. Obviously, in this case, there is no need to configure the first transmission component with the above-described structure.

[0147] The unavoidable dimensional errors in the length of each first rope 6 often result in difficulties in fully tensioning and connecting the first ropes 6 between the two first rotating wheels 12, thus affecting the consistency of the rotation pace of each photovoltaic panel 4 during use. To address this, this embodiment sets each first rope 6 in the following structure: Please refer to... Figure 3 , Figure 5 and Figure 8 The first rope 6 includes a first rope segment 601, a second rope segment 602, and a telescopic connector 603 connecting the first rope segment 601 and the second rope segment 602. The telescopic connector 603, which can elastically stretch and deform, compensates for the length error of the first rope 6, thereby ensuring that each first rope 6 can be tautly connected between the corresponding two first rotating wheels 12.

[0148] To facilitate clearer drawings and views, some of the accompanying drawings have simplified the structure of the aforementioned telescopic connector 603, while others have directly omitted the aforementioned telescopic connector 603 on the first rope 6.

[0149] For the first rope 6 connected between the two first reels 12 at the outermost ends, its third rope segment 604 includes two sub-segments and a first telescopic connector 603 connecting these two segments, and the fourth rope segment 605 includes two additional sub-segments and a second telescopic connector 603 connecting these two sub-segments. It can be understood that one sub-segment corresponds to the aforementioned first rope segment 601, the first telescopic connector 603 (or the second telescopic connector 603) corresponds to the telescopic connector 603 between the aforementioned first rope segment 601 and second rope segment 602, and the other three sub-segments and the second telescopic connector 603 (or the first telescopic connector 603) correspond to the aforementioned second rope segment 602.

[0150] In another embodiment, each first rope 6 is a single-section structure, and multiple tensioning wheels are provided on the first support 1. Each first rope 6 is connected to a tensioning wheel, so that each first rope 6 is tensioned and connected between the corresponding two first rotating wheels 12 by means of the tensioning wheels.

[0151] In this embodiment, the structure of the telescopic connector 603 is as follows: Figure 20 and Figure 21 As shown, it includes a first element 6031, a second element 6032, a third element 6033, and a fourth element 6034 arranged sequentially along the third direction F3. Wherein:

[0152] The first element 6031 is used to connect one end of the first rope segment 601. Specifically, the first element 6031 has a first end and a second end disposed opposite to each other in the third direction F3, wherein the first end is provided with a first pivot pin 6031a, and the second end is provided with a first threaded hole 6031b extending along the third direction F3. In use, one end of the first rope segment 601 is wrapped around the first pivot pin 6031a and folded in half, and then the folded end of the first rope segment 601 is clamped and fixed by a first rope buckle. The other end of the first rope segment 601 is fixed to one of the first rotating wheels 12.

[0153] The second element 6032 is used to connect the first element 6031 and the third element 6033. Specifically, the second element 6032 has a third end and a fourth end disposed opposite to each other in the aforementioned third direction F3, wherein the third end is provided with a first threaded segment 6032a extending in the third direction F3, and the fourth end is provided with a second threaded segment 6032b extending in the third direction F3.

[0154] The third element 6033 is used to connect the second element 6032 and the fourth element 6034. Specifically, the third element 6033 has a fifth end and a sixth end that are disposed opposite each other in the aforementioned third direction F3, wherein the fifth end is provided with a second threaded hole 6033a extending in the third direction F3, and the sixth end is provided with a third threaded hole 6033b extending in the third direction F3.

[0155] The fourth element 6034 is used to connect one end of the second rope segment 602. Specifically, the fourth element 6034 has a seventh end and an eighth end disposed opposite each other in the aforementioned third direction F3, wherein the seventh end is provided with a second pivot pin 6034a, and the eighth end is provided with a third threaded segment 6034b extending along the third direction F3. In use, one end of the second rope segment 602 is wrapped around the second pivot pin 6034a and folded in half, and then the folded first rope segment 601 is clamped and fixed by means of a second rope buckle. The other end of the second rope segment 602 is fixed to another first rotating wheel 12.

[0156] The threads of the first threaded hole 6031b and the second threaded hole 6033a are opposite in direction, and the threads of the first threaded segment 6032a and the second threaded segment 6032b are also opposite in direction. The first threaded segment 6032a is screwed into the first threaded hole 6031b, and the second threaded segment 6032b is screwed into the second threaded hole 6033a. With this configuration, by simply rotating the second element 6032 in one direction, it can be simultaneously connected to the first element 6031 and the third element 6033, and simultaneously detached from both elements.

[0157] The fourth element 6034 is fitted with a nut 6035, a compression spring 6036, and an outer threaded sleeve 6037 sequentially along the third direction F3. The nut 6035 is screwed into the third threaded section 6034b, the outer threaded sleeve 6037 is screwed into the third threaded hole 6033b, and the compression spring 6036 is sandwiched between the nut 6035 and the outer threaded sleeve 6037, with both the nut 6035 and the compression spring 6036 entirely housed within the third threaded hole 6033b. During use, the operator can rotate the second element 6032 in either direction to adjust the distance between the first element 6031 and the third element 6033, thereby adjusting the tension of the first rope 6 and the distance between its two ends. This ensures that the tension of each first rope 6 remains equal while maintaining consistent angles for each photovoltaic panel 4.

[0158] It is understandable that when the tensile force between the first rope segment 601 and the second rope segment 602 increases, the compression spring 6036 becomes shorter; when the tensile force between the first rope segment 601 and the second rope segment 602 decreases, the compression spring 6036 becomes longer.

[0159] To facilitate the rotation and adjustment of the second element 6032 by the staff, the second element 6032 in this embodiment also includes an external hexagonal section 6032c located between the first threaded section 6032a and the second threaded section 6032b, which can be engaged with a wrench.

[0160] To facilitate control of the angular position of each photovoltaic panel 4, the photovoltaic device in this embodiment is also equipped with a controller (not shown in the figure), which is communicatively connected to the aforementioned first power device and second power device. This controller can at least be used to: in response to receiving a first operation command, control the first power device to drive each photovoltaic panel 4 to rotate parallel to the current direction of sunlight illumination in real time.

[0161] In one application scenario, plant a urgently needs to obtain more sunlight. The staff operates the first control button connected to the controller, thereby generating a first operation command sent to the controller. In response to receiving the first operation command, the controller controls the first power equipment to drive each photovoltaic panel 4 parallel to the current sunlight direction in real time during the following period (e.g., every half hour), so that as much sunlight as possible can pass through the gap between adjacent photovoltaic panels 4 and shine on plant a below.

[0162] Normally, the controller will adjust the angle of the first support 1 every few days or every ten days or so, according to the current date, so that the first support 1 faces the sunlight of the current season.

[0163] The controller is also used to: in response to receiving a second operation command, control the first power device to drive each photovoltaic panel 4 to rotate perpendicular to the current direction of sunlight in real time.

[0164] In one application scenario, plant a does not have a strong need for sunlight. The staff operates the second control button connected to the controller to generate a second operation command sent to the controller. Upon receiving the second operation command, the controller controls the first and second power devices to drive each photovoltaic panel 4 perpendicular to the current direction of sunlight in real time, thereby maximizing the amount of light received by each photovoltaic panel 4 and improving the photoelectric conversion efficiency.

[0165] The controller is also used to: in response to receiving a third operation command, control the first power equipment to drive each photovoltaic panel 4 to rotate to a vertical position.

[0166] In one application scenario, the photovoltaic device is in a blizzard. The staff operates the third control button that is connected to the controller to generate a third operation command sent to the controller. Upon receiving the third operation command, the controller controls the first power equipment to drive each photovoltaic panel 4 to be arranged vertically, so as to prevent the photovoltaic panel 4 from being covered with thick snow and reduce the possibility of structural damage to the photovoltaic panel 4.

[0167] The controller is also used to: in response to receiving a fourth operating command, control the first power equipment to drive each photovoltaic panel 4 parallel to the current wind direction in real time.

[0168] In one application scenario, when the photovoltaic device is in windy weather, the staff operates the fourth control button connected to the controller to generate a fourth operation command sent to the controller. Upon receiving the fourth operation command, the controller controls the first power equipment to drive each photovoltaic panel 4 parallel to the current wind direction in real time, so as to reduce the windward area of ​​the photovoltaic panel 4 and reduce the possibility of the photovoltaic panel 4 being damaged by the wind.

[0169] In this embodiment, the first rope 6, the second rope 18, and the third rope 19 are steel wire ropes.

[0170] In addition, please refer to Figure 5 and Figure 7 To ensure a more balanced rotational driving force on each of the first rotating shafts 11, this embodiment places each first rotating wheel 12 at one end of each first rotating shaft 11, and a sixth rotating wheel 26 at one end of a second rotating shaft 14. A ninth rotating wheel 31, symmetrically arranged with the first rotating wheel 12, is coaxially fixed at the other end of each first rotating shaft 11. A tenth rotating wheel 32, symmetrically arranged with the sixth rotating wheel 26, is coaxially fixed at the other end of the second rotating shaft 14. A sixth rope 33, symmetrically arranged with the first rope 6, is fixedly connected between any two adjacent ninth rotating wheels 31. The connection method and structure of each sixth rope 33 are basically the same as the corresponding first rope 6. For simplicity, these details will not be elaborated further here.

[0171] <Example 2>

[0172] Figures 22 to 26 A second specific embodiment of the photovoltaic device of this application is shown, which has a structure that is basically the same as that of the photovoltaic device in Embodiment 1. It can be understood with reference to the description of Embodiment 1. The main difference is:

[0173] In this embodiment, the second transmission assembly adopts a different structural form, including a lead screw seat 9, a lead screw 10, and a lead screw nut 6035. The lead screw seat 9 is connected to the second bracket 2 in a manner rotatable about a sixth rotation axis C6. The lead screw nut 6035 is connected to the lead screw seat 9 in a manner rotatable about its own axis. The lead screw 10 passes through and is threadedly connected to the lead screw nut 6035, and the lead screw 10 is rotatably connected to the first bracket 1. The sixth rotation axis C6 is parallel to the aforementioned second rotation axis C2.

[0174] The second power device is a third motor 15 fixed to the aforementioned lead screw seat 9. The third motor 15 is connected to the aforementioned lead screw nut 6035 to drive the lead screw nut 6035 to rotate.

[0175] During operation, the third motor 15, which serves as the second power device, drives the lead screw nut 6035 to rotate. The lead screw nut 6035 drives the lead screw 10, which meshes with it, to move along the length of the lead screw 10, thereby causing the first support 1 to rise or fall.

[0176] In this embodiment, the lead screw 10 is rotatably connected to the first bracket 1 in such a way that the upper end of the lead screw 10 is connected to the first bracket 1 in a manner that allows it to rotate around the seventh rotation axis C7, wherein the seventh rotation axis C7 is parallel to the sixth rotation axis C6.

[0177] To make the rotation of the first support 1 more stable, in this embodiment, two guide components are connected between the first support 1 and the second support 2. These two guide components are arranged at intervals along a direction parallel to the second rotation axis C2.

[0178] The two guide components described above have the same structure. Specifically, each guide component includes a guide sleeve 7 and a guide rod 8. The guide sleeve 7 is connected to the second bracket 2 in a manner rotatable about an eighth rotation axis C8. The guide sleeve 7 has a guide hole extending in a direction perpendicular to the eighth rotation axis C8, wherein the eighth rotation axis C8 is parallel to the second rotation axis C2. The guide rod 8 is movably inserted into the guide hole of the guide sleeve 7, and the guide rod 8 is rotatably connected to the first bracket 1.

[0179] <Example 3>

[0180] Figure 27 This is a partial structural diagram of the photovoltaic device in Embodiment 3 of this application. The photovoltaic device has a structure that is basically the same as that in Embodiments 1 and 2, and can be understood by referring to the descriptions of Embodiments 1 and 2. The main difference is:

[0181] Except for the two first rotating wheels 12 at the very end, each of the first rotating wheels 12 is equipped with only one guide wheel 17. Two first ropes 6, extending from each first rotating wheel 12, cross over the guide wheel 17 and then lead to the first rotating wheels 12 on either side. Thus, the two first ropes 6 between the first rotating wheel 12 and the corresponding guide wheel 17 are arranged in a figure-eight shape. During operation, the radial forces acting on the first rotating wheel 12 and the guide wheel 17 from the first ropes 6 are opposite in direction and cancel each other out. This prevents the first rotating wheel 12 or the guide wheel 17 from deflecting, jamming, or becoming difficult to rotate due to a large radial force (resultant force).

[0182] Guide wheels are used to guide the direction of two adjacent first ropes, preventing the photovoltaic panel from touching the first rope during operation, thus allowing the photovoltaic panel to rotate and adjust within a wider angle range. If the guide wheels are removed, the range of angles that the photovoltaic panel can rotate will be greatly reduced.

[0183] To prevent Figure 27 The two first ropes 6 at the two middle guide wheels 17 shown interfere with each other. Each of the two guide wheels 17 is also equipped with two rope grooves, and the two first ropes 6 arranged in a figure-eight shape are respectively wound around the two rope grooves.

[0184] <Example 4>

[0185] Figures 28 to 46 A specific embodiment of the photovoltaic system of this application is shown, the photovoltaic system including multiple ( Figure 28 Six photovoltaic devices with structures similar to those in Embodiment 1 are shown, and these photovoltaic devices together constitute the photovoltaic system of this embodiment. The structure of each photovoltaic device in this embodiment can be understood with reference to the description in Embodiment 1.

[0186] In this embodiment, the first power device in the above-mentioned multiple photovoltaic devices is the same first motor 5, that is, multiple photovoltaic devices share the same first motor 5 to drive the photovoltaic panel 4 in each photovoltaic device to rotate. The first motor 5 is connected to the seventh rotating wheel 27 to drive the seventh rotating wheel 27 to rotate around its own axis.

[0187] Furthermore, in this embodiment, each photovoltaic device includes: a second rotating shaft 14, a sixth rotating wheel 26, a fourth rope 28, and a fifth rope 29, wherein:

[0188] The structure of the second rotating shaft 14 and the sixth rotating wheel 26 is the same as in Embodiment 1. Specifically, the second rotating shaft 14 is connected to the first bracket 1 in a manner that allows it to rotate around the fifth rotation axis C5, and the fifth rotation axis C5 is parallel to the first rotation axis C1.

[0189] The sixth rotating wheel 26 is coaxially connected to the second rotating shaft 14.

[0190] The two ends of the fourth rope 28 are respectively wrapped around and fixed to the seventh rotating wheel 27 and the sixth rotating wheel 26. The two ends of the fifth rope 29 are also respectively wrapped around and fixed to the seventh rotating wheel 27 and the sixth rotating wheel 26. Furthermore, one end of the fourth rope 28 and one end of the fifth rope 29 are wrapped around and fixed to the seventh rotating wheel 27 in opposite directions, and the other end of the fourth rope 28 and the other end of the fifth rope 29 are wrapped around and fixed to the sixth rotating wheel 26 in opposite directions. In this way, the fourth rope 28, the fifth rope 29, the seventh rotating wheel 27, and the sixth rotating wheel 26 together form a rotary structure. When the seventh rotating wheel 27 rotates forward or in the opposite direction under the power of the first motor 5, the seventh rotating wheel 27 can be pulled to rotate forward or in the opposite direction with the sixth rotating wheel 26 by the fourth rope 28 or the fifth rope 29 fixed to it.

[0191] Please refer to Figure 32Similar to Embodiment 1, for the first rope 6 connecting the two first rotating wheels 12 at the far end in each photovoltaic device, the first rope 6 includes a third rope segment 604 and a fourth rope segment 605. One end of the third rope segment 604 and one end of the fourth rope segment 605 are respectively wrapped around and fixed to the sixth rotating wheel 26 in opposite directions. When the sixth rotating wheel 26 rotates under the drive of the first motor 5, it then drives each of the first rotating wheels 12 to rotate via the first rope 6, thereby adjusting the angle of each photovoltaic panel 4.

[0192] As can be seen, compared with Embodiment 1, this embodiment removes the gear 16 on the second rotating shaft 14 and changes the installation position of the first motor 5, and multiple photovoltaic devices share the same first motor 5.

[0193] It is understandable that when the first motor 5 drives the sixth rotation to wind up one of the fourth rope 28 and the fifth rope 29, the other of the fourth rope 28 and the fifth rope 29 is wound up by the sixth pulley 26 and unwound from the seventh pulley 27. Due to factors such as different winding radii of the corresponding ropes on the corresponding pulleys during winding, it is difficult to ensure that the winding speed of the seventh pulley 27 on the corresponding rope is consistent with the winding speed of the sixth pulley 26 on the other rope. This may cause the first motor 5 to fail to drive the sixth rotation normally. To solve this problem, this embodiment appropriately lengthens both the fourth rope 28 and the fifth rope 29, so that when one of the fourth rope 28 and the fifth rope 29 is in a taut state, the other must be in a slack state. For example... Figure 36 In this process, after the first motor 5 drives the seventh wheel 27 to rotate clockwise to a certain position, the fourth rope 28 is taut due to the winding action of the seventh wheel 27, while the fifth rope 29 is slack. If the first motor 5 continues to drive the seventh wheel 27 to rotate clockwise in this state, even if the winding speed of the sixth wheel 26 on the fifth rope 29 is greater than the winding speed of the seventh wheel 27 on the fourth rope 28, the fifth rope 29 will not be overly taut because it has a slack allowance. For example... Figure 41 In the process, after the first motor 5 drives the seventh wheel 27 to rotate counterclockwise to a certain position, the fifth rope 29 is in a taut state due to the winding of the seventh wheel 27, while the sixth rope 33 is in a slack state. If the first motor 5 continues to drive the seventh wheel 27 to rotate counterclockwise in this state, even if the winding speed of the sixth wheel 26 on the fourth rope 28 is greater than the winding speed of the seventh wheel 27 on the fifth rope 29, the fourth rope 28 will not be too taut because it has a slack margin.

[0194] It is understandable that the above configuration also has the following advantages: during use, the angle of the first support 1 may be adjusted as needed, which may cause changes in the tension of the sixth rope 33 and / or the seventh rope between the fourth wheel 24 and the fifth wheel 25. For example, the tension may increase because the first support 1 may be stretched due to the upward tilting of the sixth rope 28 and the fifth rope 29. In this embodiment, a slack allowance is provided for the rope between the seventh wheel 27 and the sixth wheel 26. Before the first support 1 is tilted upward, the first motor 5 drives the sixth wheel to rotate a certain angle in the corresponding direction, thereby making the fourth rope 28 and the fifth rope 29 slack. Figure 40 Then flip up the first support 1.

[0195] Figure 35 The image shows the angle of photovoltaic panel 4 just as the sun rises in the morning. For ease of description, this angle position of photovoltaic panel 4 is referred to as the first position. At this time, the first steel wire rope is in a taut state, and the second steel wire rope is in a slack state.

[0196] Figures 36 to 38 The diagrams demonstrate the interaction between the seventh and sixth rotating wheels 27 and 26 at specific times in the morning, noon, and afternoon. The first motor 5 drives the seventh rotating wheel 27 to rotate clockwise, which in turn drives the sixth rotating wheel 26 to rotate clockwise via the tensioned fourth steel wire rope. The sixth rotating wheel 26 then drives the photovoltaic panel 4 to rotate clockwise. During this process, the seventh rotating wheel 27 unwinds the fifth rope 29, and the sixth rotating wheel 26 winds the fifth rope 29, with the fifth rope 29 always remaining slack.

[0197] Figure 39 The final angle of photovoltaic panel 4 after sunset is shown. For ease of description, the angle position of photovoltaic panel 4 at this time is referred to as the second position.

[0198] The first motor 5 can perform the following adjustment operations before sunrise on the second day. For details, please refer to... Figures 40-46 As shown:

[0199] Figure 40 The diagram illustrates the interaction between the seventh and sixth rotating wheels 27 and 26 during the initial adjustment phase. Specifically, the first motor 5 drives the seventh rotating wheel 27 to rotate counterclockwise. At this time, the seventh rotating wheel 27 unwinds the fourth rope 28 and winds up the fifth rope 29. The fourth rope 28 changes from a taut to a slack state, and the slack of the fifth rope 29 gradually decreases. The sixth rotating wheel 26 does not rotate with the seventh rotating wheel 27, and the photovoltaic panel 4 remains in the aforementioned second position.

[0200] Refer to Figure 41 ,exist Figure 41In the middle, the seventh rotating wheel 27 winds the fifth rope 29 counterclockwise to a certain length so that the fifth rope 29 is just in a taut state, while the fourth rope 28 is in a slack state.

[0201] Next, please refer to Figure 42 and Figure 43 The sixth wheel 26 continues to wind the fifth rope 29 counterclockwise, thereby driving the seventh wheel 27 to rotate counterclockwise through the tensioned fifth rope 29. The sixth wheel 26 then drives the photovoltaic panel 4 to rotate counterclockwise. During this process, the seventh wheel 27 unwinds the fourth rope 28, and the sixth wheel 26 winds the fourth rope 28, with the fourth rope 28 always in a slack state.

[0202] When photovoltaic panel 4 rotates to Figure 44 After returning to the first position as shown, the first motor 5 stops driving the seventh rotating wheel 27 to rotate counterclockwise, and then... Figure 44 That drives the seventh wheel 27 to rotate clockwise in the opposite direction until the fourth rope 28 is in position. Figure 46 Stop after reaching the tensioned state shown.

[0203] It is understandable that in order to prevent the photovoltaic panel 4 from rotating unexpectedly during use, the first rotating shaft 11 and the first bracket 1 can be set to an interference fit. Only when the torsional driving force on the first rotating shaft 11 is large enough will it be equivalent to the first bracket 1 rotating.

[0204] Please refer to Figure 31 To prevent interference between adjacent fourth ropes 28 and / or fifth ropes 29 on the seventh reel 27 during winding and unwinding, this embodiment provides a total of 12 rope grooves on the seventh reel 27. One end of each of the six fourth ropes 28 and six fifth ropes 29 from the six photovoltaic devices is wound into these 12 rope grooves. Similarly, please refer to... Figure 32 The sixth reel 26 has four rope grooves.

[0205] Additionally, please refer to Figure 29 , Figure 33 and Figure 34In this embodiment, the second power device in the aforementioned multiple photovoltaic devices is the same second motor 13. That is, multiple photovoltaic devices share the same second motor 13 to drive the first support 1 in each photovoltaic device to rotate. The second motor 13 is connected to the eighth rotating wheel 30 to drive the eighth rotating wheel 30 to rotate around its own axis. The eighth rotating wheel 30 is equivalent to the rope take-up and release wheel mentioned above. One end of the second rope 18 and the third rope 19 in each photovoltaic device is wrapped around and fixed to the eighth rotating wheel 30 in opposite directions. Thus, when the eighth rotating wheel 30 rotates forward or backward under the power of the second motor 13, the eighth rotating wheel 30 will pull the sleeve rod 21 in each photovoltaic device to extend or retract through the second rope 18 or the third rope 19 fixed to it, thereby realizing the raising and lowering of the first support 1 in each photovoltaic device.

[0206] Compared to Embodiment 1, this embodiment changes the specific installation position of the second motor 13. The second motor 13 is mounted on a motor mounting bracket that is fixed relative to the ground b, and multiple photovoltaic devices share the same second motor 13. The aforementioned motor mounting bracket can be securely connected to the column 3 in each photovoltaic device.

[0207] Please refer to Figure 34 To prevent adjacent second ropes 18 and / or third ropes 19 on the eighth rotating wheel 30 from interfering with each other during winding and unwinding, this embodiment also provides a total of 12 rope grooves on the eighth rotating wheel 30. A total of 6 second ropes 18 and 6 third ropes 19 (one end) of the six photovoltaic devices are respectively wound into these 12 rope grooves.

[0208] <Example 5>

[0209] Please refer to Figure 47 This embodiment provides a control method that can be applied to the photovoltaic device of Embodiment 1, the photovoltaic system of Embodiment 2, and the photovoltaic system of Embodiment 3. This control method can be understood by referring to the description of the controller's function in Embodiment 1. The control method includes:

[0210] S101, in response to receiving the first operation command, controls the first power equipment to drive each photovoltaic panel 4 to rotate parallel to the current direction of sunlight in real time.

[0211] S102, in response to receiving the second operation command, controls the first power device to drive each photovoltaic panel 4 to rotate to be perpendicular to the current sunlight direction in real time.

[0212] S103, in response to receiving the third operation command, controls the first power equipment to drive each photovoltaic panel 4 to rotate to a vertical arrangement.

[0213] S104, in response to receiving the fourth operation command, controls the first power equipment to drive each photovoltaic panel 4 to rotate parallel to the current wind direction in real time.

[0214] The above are merely exemplary embodiments of this application and are not intended to limit the scope of protection of this application, which is determined by the appended claims.

Claims

1. A photovoltaic device, characterized in that, The photovoltaic device is installed in a terrestrial area with vegetation, and the photovoltaic device includes: Multiple columns, each of which is fixedly buried at its lower end in the ground of the land area; A first support, which is connected to the plurality of uprights and located above the plant; Multiple photovoltaic panels, each of which is connected to the first bracket in a manner that allows it to rotate about its respective first rotation axis; A first transmission assembly, the first transmission assembly including Multiple first rotating wheels are fixedly connected to multiple photovoltaic panels in a one-to-one correspondence. Multiple first ropes are provided, with one first rope connecting each pair of adjacent first spools and the two most end pairs of first spools, and one end of each pair of adjacent first ropes is wrapped around and fixed to a corresponding first spool in opposite directions. A first power device is connected to a seventh rotating wheel and drives the seventh rotating wheel to rotate around its own axis. The first power device is connected to the plurality of photovoltaic panels through a first transmission component. The second rotating shaft is connected to the first bracket in a manner that allows it to rotate about a fifth rotation axis; A sixth rotating wheel, coaxially connected to the second rotating shaft; and The fourth and fifth ropes; Wherein, one end of the fourth rope and one end of the fifth rope are respectively wrapped around and fixed to the seventh rotating wheel in opposite directions, and the other end of the fourth rope and the other end of the fifth rope are respectively wrapped around and fixed to the sixth rotating wheel in opposite directions; The first rope between the two first spools at the far end, the first rope comprising a third rope segment and a fourth rope segment, one end of the third rope segment and one end of the fourth rope segment respectively being wrapped around and fixed to the sixth spool in opposite directions; When either the fourth rope or the fifth rope is in a taut state, the other rope is in a slack state; When the first power device drives the seventh rotating wheel to rotate, the seventh rotating wheel drives the sixth rotating wheel to rotate through the fourth or fifth rope, and the sixth rotating wheel drives the first rotating wheel to rotate, so that each photovoltaic panel rotates around its corresponding first rotation axis, thereby adjusting the sunlight projection area towards the plant between two adjacent photovoltaic panels.

2. The photovoltaic device according to claim 1, characterized in that, The plurality of photovoltaic panels are arranged along a first direction, and the plurality of first rotation axes corresponding to the plurality of photovoltaic panels are parallel to each other, and the first direction is perpendicular to the first rotation axis.

3. The photovoltaic device according to claim 2, characterized in that, The fifth axis of rotation is parallel to the first axis of rotation.

4. The photovoltaic device according to claim 1, characterized in that, The photovoltaic device also includes: The second support is fixed to the plurality of columns and located above the plant, and the first support is connected above the second support in a manner that allows it to rotate about a second axis of rotation. The second power device is used to drive the first bracket to rotate around the second rotation axis, wherein the second rotation axis is perpendicular to the first rotation axis of each photovoltaic panel and extends in an east-west direction.

5. The photovoltaic device according to claim 4, characterized in that, The second power device is connected to the first support via a second transmission assembly. The second transmission assembly includes a lead screw seat, a lead screw, and a lead screw nut. The lead screw seat is connected to the second support in a manner that allows it to rotate around a sixth rotation axis. The lead screw nut is connected to the lead screw seat in a manner that allows it to rotate around its own axis. The lead screw passes through the lead screw nut and is threadedly connected to the lead screw nut. The lead screw is rotatably connected to the first support. The sixth rotation axis is parallel to the second rotation axis. The second power device is a third motor that is fixed to the lead screw seat and connected to the lead screw nut to drive the lead screw nut to rotate.

6. The photovoltaic device according to claim 1, characterized in that, The first transmission assembly further includes: Multiple first rotating shafts are fixed to the multiple photovoltaic panels one to one, and both ends of each first rotating shaft are connected to the first bracket in a manner that allows it to rotate around its own axis. The plurality of first rotating wheels are coaxially fixed to the plurality of first rotating shafts in a corresponding manner; The first power device is the first motor.

7. The photovoltaic device according to claim 6, characterized in that, The first support is provided with a plurality of tensioning pulleys, and each of the first ropes is connected to one of the tensioning pulleys; or / and, Each of the first ropes includes a first rope segment, a second rope segment, and a telescopic connector connecting the first rope segment and the second rope segment.

8. The photovoltaic device according to claim 1, characterized in that, The first power equipment includes a plurality of first motors, and the plurality of first motors are respectively connected to the plurality of photovoltaic panels; Each of the photovoltaic panels is a rectangular structure with a length of 1.5-3 meters and a width of 0.2-0.4 meters, and the length of the rectangular structure is parallel to the first axis of rotation.

9. The photovoltaic device according to any one of claims 1 to 8, characterized in that, The photovoltaic device also includes a controller that is communicatively connected to the first power equipment; The controller is configured to: in response to receiving a first operation command, control the first power device to drive each of the photovoltaic panels to rotate parallel to the current direction of sunlight in real time.

10. The photovoltaic device according to claim 9, characterized in that, The controller is also used for: In response to receiving a second operation command, the first power device is controlled to drive each photovoltaic panel to rotate to a position perpendicular to the current direction of sunlight in real time. In response to receiving a third operation command, the first power device is controlled to drive each of the photovoltaic panels to rotate to a vertical arrangement; In response to receiving the fourth operation command, the first power device is controlled to drive each of the photovoltaic panels to rotate parallel to the current wind direction in real time.

11. A photovoltaic system, characterized in that, The device includes multiple photovoltaic devices as described in any one of claims 1 to 10, wherein the first power device in the multiple photovoltaic devices is the same first motor, the first motor is connected to a seventh wheel to drive the seventh wheel to rotate around its own axis; for the first rope connected between the two first wheels at the far end in each photovoltaic device, the first rope includes a third rope segment and a fourth rope segment, one end of the third rope segment and one end of the fourth rope segment are respectively wrapped around and fixed to the sixth wheel in opposite directions.

12. A control method applied to a photovoltaic device as described in any one of claims 1 to 10 or a photovoltaic system as described in claim 11, characterized in that, The control method includes: In response to receiving a first operation command, the first power device is controlled to drive each photovoltaic panel to rotate parallel to the current direction of sunlight in real time.

13. The control method according to claim 12, characterized in that, Also includes: In response to receiving a second operation command, the first power device is controlled to drive each photovoltaic panel to rotate to a position perpendicular to the current direction of sunlight in real time. In response to receiving a third operation command, the first power device is controlled to drive each of the photovoltaic panels to rotate to a vertical position.

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