A photovoltaic device and photovoltaic system

Abstract

The application relates to a photovoltaic device and a photovoltaic system, the photovoltaic device comprising: a first support; a plurality of first rotating shafts, each being connected to the first support in a manner capable of rotating around an axis of the first rotating shaft; a plurality of photovoltaic panels, each being fixed to a corresponding first rotating shaft; and a first driving device connected to the plurality of first rotating shafts through a first transmission assembly to drive each first rotating shaft to rotate around the axis of the first rotating shaft. The first transmission assembly comprises: a plurality of first rotating wheels, each being coaxially fixed to a corresponding first rotating shaft; and a plurality of first ropes, each being connected between every two adjacent first rotating wheels and between the two first rotating wheels at the ends, and each end of every two adjacent first ropes being wound around and fixed to a corresponding first rotating wheel in opposite directions. The photovoltaic device has low transmission mechanism cost, high reliability and a limiting function for the rotating angle of the photovoltaic panel.

Description

Technical Field

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

[0002] Solar energy is being used more and more as a clean and renewable energy source, especially tracking photovoltaic power generation technology, which is an emerging solar energy utilization technology following conventional photovoltaic power generation technology.

[0003] Solar tracking systems can keep photovoltaic panels facing the sun as directly as possible, increasing the power generation of solar photovoltaic modules, effectively reducing the investment cost of photovoltaic power generation systems, and improving the utilization rate of solar photovoltaic modules.

[0004] Photovoltaic tracking systems that use multiple photovoltaic panels sharing a support structure represent a future trend in solar tracking photovoltaic systems. Currently, commonly used tracking photovoltaic support structures are mainly single-motor linkage multi-point linkage structures, but this structure has many drawbacks: for example, high component costs, inconvenient installation, and high manual assembly costs; furthermore, the connecting rods in the transmission mechanism are very long, making them prone to twisting and deformation, which reduces the lifespan of the tracking system; and thirdly, the transmission mechanism itself does not have a limiting function for the transmission angle, so if the motor's rotation angle is not properly controlled, the photovoltaic panels may collide with the support structure and be damaged. Summary of the Invention

[0005] The technical problem solved by this application is to propose a photovoltaic device and a photovoltaic system, wherein the transmission structure used to transmit driving force to the photovoltaic panel in the photovoltaic device has the advantages of low cost and high reliability, and has a limiting function for the rotation angle of the photovoltaic panel.

[0006] The technical solution of this application is: In a first aspect, this application proposes a photovoltaic device, comprising: First support; A plurality of first rotating shafts are arranged parallel to each other along a first direction, and each of the first rotating shafts is connected to the first bracket in a manner that allows it to rotate about its own axis. Multiple photovoltaic panels are arranged along the first direction, and each photovoltaic panel is fixed to one of the multiple first rotating shafts in a corresponding manner. A first driving device is connected to the plurality of first rotating shafts via a first transmission assembly to drive each of the first rotating shafts to rotate around its respective axis. The first transmission component includes: A plurality of first rotating wheels, each of which is coaxially fixed to a plurality of first rotating shafts in a corresponding manner; and Multiple first ropes are provided, with one first rope connecting each pair of adjacent first reels and the two most end first reels, and one end of each pair of adjacent first ropes is wrapped around and fixed to a corresponding first reel in opposite directions.

[0007] In one alternative design, under any operating condition, the sum of the circumference angles of at least two partially adjacent ends of the first ropes on a corresponding first wheel is less than 360 degrees.

[0008] In one alternative design, under any operating condition, the sum of the circumference angles of at least two partially adjacent ends of the first ropes on a corresponding first wheel is not greater than 180 degrees.

[0009] In one optional design, the outer circumferential surface of each first wheel is provided with a first annular groove and a second annular groove arranged at intervals along the axial direction of the first wheel, and one end of any two adjacent first ropes respectively wraps around the first annular groove and the second annular groove of the corresponding first wheel.

[0010] In one optional design, each of the first rotating wheels has a first groove and a second groove extending inward along the axial direction of its first end face in a first direction. The first groove and the second groove are arranged circumferentially between the first rotating wheels. The groove depth of the first groove extends from the outer circumferential surface of the first rotating wheel to the radially inner side of the first annular groove, thereby making the first groove communicate with the first annular groove. The groove depth of the second groove extends from the outer circumferential surface of the first rotating wheel to the radially inner side of the first annular groove and the second annular groove. Each of the first ropes is connected to a locking head at both ends. For any two adjacent first ropes, the locking head at one end of one first rope is inserted into the first locking groove from the first end face and is located radially inside the first annular groove, and the locking head at one end of the other first rope is inserted into the second locking groove from the first end face and is located radially inside the second annular groove.

[0011] In one alternative design, 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; or, 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.

[0012] In an optional design, the first transmission assembly further includes: A second rotating shaft is connected to the first bracket in a manner that allows it to rotate about its own axis, and the second rotating shaft is arranged parallel to the first rotating shaft; and The second rotating wheel is coaxially fixed to the second rotating shaft; For the first rope connecting the two first spools at the far end, 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 second spool in opposite directions; The first driving device is a motor that drives the second rotating shaft to rotate.

[0013] In one alternative design, at least two partially adjacent first ropes are integrally connected. In a second aspect, this application proposes a photovoltaic system comprising a plurality of photovoltaic devices as described in the first aspect, wherein the first driving device in the plurality of photovoltaic devices is a single motor, and the motor is connected to a third wheel to drive the third wheel to rotate about its own axis. Each of the photovoltaic devices includes a second rope and a third rope, wherein one end of the second rope and one end of the third rope are respectively wrapped around and fixed to the second reel in opposite directions, and the other ends of the second rope and the third rope are respectively wrapped around and fixed to the third reel in opposite directions.

[0014] In one alternative design, when either the second rope or the third rope is in a taut state, the other is in a slack state.

[0015] This application has at least the following beneficial effects: 1. The first transmission component in the photovoltaic device, which is used to transmit driving force to the photovoltaic panel, has a main component that is a low-cost rope. Moreover, the rope mainly bears tensile stress during use, making it highly reliable, not easily damaged, and with a long service life.

[0016] 2. The ropes and wheels in the first transmission assembly cooperate with each other using a specific structure. The mechanical structure of the first transmission assembly itself can limit the rotation angle of the photovoltaic panel, thereby avoiding collision between the photovoltaic panel and the bracket, ensuring the service life of the photovoltaic panel, and also facilitating the design of increasing the size of the photovoltaic panel, especially the length.

[0017] 3. The photovoltaic system in this application includes multiple photovoltaic devices, which share the same first motor to drive the photovoltaic panels in each photovoltaic device to rotate, thus saving equipment costs and being easy to install. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic device in Embodiment 1 of this application.

[0020] Figure 2 yes Figure 1 A schematic diagram of a local structure.

[0021] Figure 3 yes Figure 2 The diagram shows the structure from another perspective.

[0022] Figure 4 yes Figure 3 Enlarged schematic diagram of part X1.

[0023] Figure 5 yes Figure 3 A magnified view of a section in the upper right corner.

[0024] Figure 6 yes Figure 3 A structural diagram from another perspective after components such as the second support have been removed.

[0025] Figure 7 yes Figure 6 Enlarged schematic diagram of part X2.

[0026] Figure 8 yes Figure 6 A cross-sectional view after the photovoltaic panels have been removed.

[0027] 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.

[0028] Figure 10 yes Figure 9 The diagram shows the structure from another perspective.

[0029] Figure 11 yes Figure 9 A schematic diagram of its decomposed structure.

[0030] Figure 12 This is an exploded structural diagram of the telescopic connector in Embodiment 1 of this application.

[0031] Figure 13 This is a cross-sectional view of the telescopic connector in Embodiment 1 of this application.

[0032] Figure 14 This is a partial structural schematic diagram of the photovoltaic device in Embodiment 2 of this application.

[0033] Figure 15 This is a schematic diagram of the photovoltaic system in Embodiment 3 of this application.

[0034] Figure 16 yes Figure 15 A partial structural diagram.

[0035] Figure 17 yes Figure 16 Enlarged schematic diagram of part X3.

[0036] Figure 18 yes Figure 16 Enlarged schematic diagram of part X4 in the middle.

[0037] Figure 19 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 3 of this application.

[0038] Figure 20 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 3 of this application.

[0039] Figure 21 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 3 of this application.

[0040] Figure 22 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 3 of this application.

[0041] Figure 23 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 3 of this application.

[0042] Figure 24 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 3 of this application.

[0043] Figure 25 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 3 of this application.

[0044] Figure 26 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 3 of this application.

[0045] Figure 27 This 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 3 of this application.

[0046] Figure 28 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 3 of this application.

[0047] Figure 29This 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 3 of this application.

[0048] Figure 30 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 3 of this application.

[0049] Explanation of reference numerals in the attached figures: C1 - First axis of rotation; F1 - First direction, F2 - Second direction; 1-First support, 2-Second support, 3-Second motor, 4-Photovoltaic panel, 5-First motor, 6-First rope, 7-First shaft, 8-First wheel, 9-Second wheel, 10-Second shaft, 11-Third wheel, 12-Second rope, 13-Third rope, 14-Fourth wheel, 15-Fifth wheel, 16-Fourth rope, 17-Guide wheel, 18-Gear; 601 - First rope segment, 602 - Second rope segment, 603 - Telescopic connector, 604 - Third rope segment, 605 - Fourth rope segment; 6031 - First component, 6031a - First pivot pin, 6031b - First threaded hole; 6032 - Second component, 6032a - First threaded section, 6032b - Second threaded section, 6032c - External hexagonal section; 6033 - Third component, 6033a - Second threaded hole, 6033b - Third threaded hole; 6034 - Fourth component, 6034a - Second pivot pin, 6034b - Third threaded section; 6035 - Nut; 6036 - Compression Spring; 6037 - External threaded sleeve; 6a-Card Header; 801 - First annular groove, 802 - Second annular groove, 803 - First slot, 804 - Second slot. Detailed Implementation

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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).

[0056] 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.

[0057] 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.

[0058] 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.

[0059] In the description of this application and the claims, the term “configured as” is generally interchangeable with “having the ability to,” “designed to,” “used for,” or “capable of,” depending on the context.

[0060] In the description of this application and the claims, if there is a "direction" of motion, including motion with a directional component, the term "in direction" is not necessarily understood as motion only in that one direction. Those skilled in the art can understand the specific meaning of the aforementioned terms in this application according to the specific circumstances.

[0061] Embodiments of this application will now be described with reference to the accompanying drawings.

[0062] <Example 1> Figures 1 to 13A specific embodiment of the photovoltaic device of this application is shown. The photovoltaic device includes a first support 1, a plurality of first rotating shafts 7, a plurality of photovoltaic panels 4, and a first driving device. Wherein: Multiple first rotating shafts 7 are arranged parallel to each other along a first direction F1, and each first rotating shaft 7 is connected to a first support 1 in a manner that allows it to rotate about its own axis. The weight of the first rotating shaft 7 is supported by the first support 1.

[0063] Multiple photovoltaic panels 4 are arranged along the first direction F1, and each photovoltaic panel 4 is fixed to a corresponding first rotating shaft 7. When the first rotating shaft 7 rotates, the photovoltaic panels 4 fixed to the first rotating shaft 7 rotate with it, thereby adjusting the angle of the photovoltaic panels 4 towards the light. The weight of the photovoltaic panels 4 is also supported by the first support 1.

[0064] The first drive device is connected to a plurality of first rotating shafts 7 via a first transmission assembly to drive each first rotating shaft 7 to rotate around its respective axis.

[0065] The first transmission assembly includes multiple first rotating wheels 8 and multiple first ropes 6. The multiple first rotating wheels 8 are coaxially fixed to multiple first rotating shafts 7, one-to-one. A first rope 6 is connected between each pair of adjacent first rotating wheels 8 and between the two outermost first rotating wheels 8, with one end of each pair of adjacent first ropes 6 wrapped around and fixed to a corresponding first rotating wheel 8 in opposite directions. Thus, the multiple first rotating wheels 8 and the multiple first ropes 6 together form a rotary structure. When one of the first rotating wheels 8 rotates under power, it pulls the adjacent second first rotating wheel 8 to rotate via the first rope 6 fixed to it. This second first rotating wheel 8 then drives the adjacent third first rotating wheel 8 to rotate, and so on, causing all the first rotating wheels 8 to rotate, thereby adjusting the angle of each photovoltaic panel 4.

[0066] Please refer to Figures 9 to 11 and combined Figure 5 , Figure 7 and Figure 8 The phrase “surrounding and fixing to in opposite directions” means that for two adjacent first ropes 6, one end of one first rope 6 is surrounded and fixed to the corresponding first wheel 8 in a clockwise direction, while the other end of the first rope 6 is surrounded and fixed to the first wheel 8 in a counterclockwise direction.

[0067] It is understandable that "surrounding" includes both a complete circle around the perimeter and a partial circle (such as a half circle).

[0068] However, if the end of each first rope 6 is wrapped around the corresponding first reel 8 in a full circumference (greater than 360°), the following drawback will exist: Under the power of the first drive device, the first rope 6 may pull the first rotating wheel 8 to rotate a full circle or even several circles (the first rotating wheel 8 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.

[0069] For the reasons mentioned above, in order to limit the rotation range of the photovoltaic panel 4 to an angle that will not collide with or block the first support 1, this angle may vary depending on the first support and the photovoltaic panel. However, in general, the rotation angle range of the photovoltaic panel 4 should be controlled within 360 degrees. This embodiment is designed such that, in any working state, the sum of the circumference angles of at least one end of two adjacent first ropes 6 around a corresponding first wheel 8 (i.e., the first wheel connecting the two adjacent first ropes) is less than 360 degrees.

[0070] 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.

[0071] Please refer to Figures 9 to 10 and combined Figure 11 ,exist Figure 11 In this configuration, the first rope 6 has a 240° encirclement angle on the first rotating wheel 8, and the second rope 6 has a 60° encirclement angle on the first rotating wheel 8. If the first rope 6 pulls the first rotating wheel 8... Figure 11 When the first rope 6 is fully released from its loop around the first wheel 8, the tension exerted by the first rope 6 on the first wheel 8 passes through the axis of rotation of the first wheel 8 and will not generate a rotational torque. Therefore, regardless of the magnitude of the tension applied by the first rope 6 to the first wheel 8 at this point, the first wheel 8 will not continue to rotate counterclockwise due to this tension. The counterclockwise rotation angle of the first wheel 8 is (or slightly greater than) 240°. Similarly, if the second rope 6 pulls the first wheel 8 in... Figure 11When the second first rope 6 is fully released from its winding section on the first rotating wheel 8, the tension of the second first rope 6 on the first rotating wheel 8 passes through the axis of rotation of the first rotating wheel 8 and will not generate a rotational torque. No matter how much tension the second first rope 6 applies to the first rotating wheel 8 at this time, the first rotating wheel 8 will no longer continue to rotate clockwise due to this tension. The counterclockwise rotation angle of the first rotating wheel 8 is (or slightly greater than) 60°. Therefore, in this embodiment, if only the cooperation between the first rope and the first rotating wheel is considered, the maximum possible rotation angle of the photovoltaic panel 4 is approximately 300°.

[0072] 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, under any working state, the sum of the circumference angles of at least two partially adjacent first ropes 6 on the corresponding first wheel 8 is not greater than 180 degrees.

[0073] It can be 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-mentioned characteristics.

[0074] Please refer to again Figures 9 to 11 In order to prevent two adjacent first ropes 6 from interfering with each other when winding and unwinding, a first annular groove 801 and a second annular groove 802 are provided on the outer peripheral surface of each first wheel 8, which are spaced apart along the axial direction of the first wheel 8. One end of any two adjacent first ropes 6 is respectively wrapped in the first annular groove 801 and the second annular groove 802 corresponding to a first wheel 8.

[0075] Furthermore, each first rotating wheel 8 has a first groove 803 and a second groove 804 extending inward along the axial direction on one end face (for ease of description, this end face is referred to as the first end face), and the first groove 803 and the second groove 804 are arranged circumferentially on the first rotating wheel 8. The groove depth of the first groove 803 extends from the outer circumferential surface of the first rotating wheel 8 to the radially inner side of the first annular groove 801, thereby enabling the first groove 803 to communicate with the first annular groove 801. The groove depth of the second groove 804 extends from the outer circumferential surface of the first rotating wheel 8 to the radially inner side of the first annular groove 801 and the second annular groove 802, thereby enabling the second groove 804 to communicate with the first annular groove 801 and the second annular groove 802, respectively. Each of the two ends of the first rope 6 is connected to a clip 6a (similar to a brake cable). For any two adjacent first ropes 6, the clip 6a at one end of one first rope 6 is inserted into the first slot 803 from the aforementioned first end face and is located radially inside the first annular groove 801, and the clip 6a at one end of the other first rope 6 is inserted into the second slot 804 from the aforementioned first end face and is located radially inside the second annular groove 802. In this way, the two adjacent first ropes 6 are fixedly connected to the first wheel 8.

[0076] The unavoidable dimensional errors in the length of each first rope 6 may make it difficult to fully tension and connect the first ropes 6 between the two first rotating wheels 8, 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 4 and Figure 5 and combined Figure 7 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 8.

[0077] 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 8 by means of the tensioning wheels.

[0078] As can be seen from the above, in this embodiment, two adjacent first ropes 6 are indirectly fixedly connected by means of a first pulley 8 between them. It should be noted that two adjacent first ropes 6 can also be directly fixedly connected without the aid of the first pulley 8 to form a long rope, and then a part of the long rope is locked to the corresponding first pulley 8 by means of fasteners. For example, in another embodiment, two adjacent first ropes 6 are integrally connected to form a long rope, and the long rope can be divided into two integrally connected first ropes, and then a part of the long rope is locked to the corresponding first pulley 8 by means of fasteners. In this way, it is equivalent to the two first ropes that have been divided being wrapped around and fixed to the corresponding first pulley in opposite directions. The scope of protection of claim 1 of this application does not exclude this situation.

[0079] In this embodiment, the structure of the telescopic connector 603 is as follows: Figure 12 and Figure 13 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 second direction F2. Wherein: 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 second direction F2, 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 second direction F2. 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 8.

[0080] 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 that are disposed opposite to each other in the aforementioned second direction F2, wherein the third end is provided with a first threaded segment 6032a extending along the second direction F2, and the fourth end is provided with a second threaded segment 6032b extending along the second direction F2.

[0081] 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 to each other in the aforementioned second direction F2, wherein the fifth end is provided with a second threaded hole 6033a extending along the second direction F2, and the sixth end is provided with a third threaded hole 6033b extending along the second direction F2.

[0082] 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 second direction F2, 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 second direction F2. 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 end of the second rope segment 602 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 8.

[0083] The thread directions of the first threaded hole 6031b and the second threaded hole 6033a are opposite to each other, and the thread directions of the first threaded segment 6032a and the second threaded segment 6032b are opposite to each other. 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, or simultaneously detached from the first element 6031 and the third element 6033.

[0084] The fourth element 6034 is fitted with a nut 6035, a compression spring 6036, and an outer threaded sleeve 6037 sequentially along the second direction F2. 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.

[0085] 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.

[0086] 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.

[0087] In this embodiment, the first transmission assembly further includes a second rotating shaft 10 and a second rotating wheel 9. The second rotating shaft 10 is connected to the first bracket 1 in a manner that allows it to rotate around its own axis, and the second rotating shaft 10 is arranged parallel to the first rotating shaft 7. The second rotating wheel 9 is coaxially fixed to the second rotating shaft 10.

[0088] Please refer to Figure 7 For the first rope 6 connecting the two first rotating wheels 8 at the far end, 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 respectively wrap around and fix to the second rotating wheel 9 in opposite directions. The first driving device is a motor that drives the second rotating shaft 10 to rotate, specifically... Figure 2 and Figure 3 The first motor on display is 5.

[0089] When the second rotating shaft 10 rotates under the drive of the first motor 5, it is then driven by the second rotating wheel 9 through the first rope 6 to rotate with each of the first rotating wheels 8, thereby adjusting the angle of each photovoltaic panel 4.

[0090] In this embodiment, the first motor 5 is specifically connected to and drives the second rotating shaft 10 as follows: Please refer to... Figure 7 The first transmission assembly also includes a gear 18 coaxially fixed to the second rotating shaft 10, and a first motor 5 fixed to the first bracket 1 and connected to a gear 18 meshing with the gear 18. Figure 2 and Figure 3 The power gear is concealed by a protective cover. During operation, the first motor 5 applies rotational power to the power gear, which drives the gear 18 meshing with it to rotate, and the gear 18 drives the second rotating shaft 10 fixed to it to rotate.

[0091] The rotation of the first rotating shaft 7 can only adjust the angle of the photovoltaic panel 4 in one direction, and cannot enable the photovoltaic panel 4 to simultaneously track the longitude and latitude of sunlight. Therefore, the photovoltaic device is also equipped with a second support 2 and a second driving 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.

[0092] Specifically, the first bracket 1 is connected above the second bracket 2 in a manner that allows it to rotate around a first rotation axis C1, and the weight of the first bracket 1 is supported by the second bracket 2. The second drive device is used to drive the first bracket 1 to rotate around the aforementioned first rotation axis C1, wherein the first rotation axis C1 is perpendicular to the axis of the first rotating shaft 7.

[0093] In this embodiment, the aforementioned first rotation axis C1 extends in an east-west direction. Therefore, by controlling the first support 1 to rotate around the first rotation axis C1, the photovoltaic panel 4 can track the latitude of sunlight; by controlling the photovoltaic panel 4 to rotate around the first axis, the photovoltaic panel 4 can track the longitude of sunlight. The first direction F1 is parallel to the first rotation axis C1. This not only facilitates the on-site construction and subsequent use of the photovoltaic device but also improves the structural compactness of the photovoltaic device.

[0094] In this embodiment, the second driving device is also a motor, specifically... Figure 3 The second motor 3 is shown in the figure. The aforementioned second motor 3 is connected to the telescopic rod connected between the first bracket 1 and the second bracket 2, and is used to drive the telescopic rod to extend and retract, thereby driving the first bracket 1 to rotate upward and downward, and adjusting the angle of the photovoltaic panel 4.

[0095] In this embodiment, the first rope 6 is a steel wire rope, and 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 perpendicular to the first direction F1.

[0096] 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.

[0097] 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 7, this embodiment places each first rotating wheel 8 at one end of each first rotating shaft 7, and a second rotating wheel 9 at one end of the second rotating shaft 10. A fourth rotating wheel 14, symmetrically arranged with the first rotating wheel 8, is coaxially fixed at the other end of each first rotating shaft 7. A fifth rotating wheel 15, symmetrically arranged with the second rotating wheel 9, is coaxially fixed at the other end of the second rotating shaft 10. A fourth rope 16, symmetrically arranged with the corresponding first rope 6, is fixedly connected between any two adjacent fourth rotating wheels 14. The connection method and structure of each fourth rope 16 are basically the same as those of the corresponding first rope 6. For simplicity, these details will not be elaborated further here.

[0098] <Example 2> Figure 14 This is a partial structural diagram of the photovoltaic device in Embodiment 2 of this application. The photovoltaic device 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: Except for the two first rotating wheels 8 at the very end, each of the first rotating wheels 8 is equipped with only one guide wheel 17. Two first ropes 6, extending from each first rotating wheel 8, cross over the guide wheel 17 and then lead to the first rotating wheels 8 on either side. Thus, the two first ropes 6 between the first rotating wheel 8 and the corresponding guide wheel 17 are arranged in a figure-eight shape. During operation, the radial forces acting on the first rotating wheel 8 and the guide wheel 17 from the first ropes 6 are in opposite directions and cancel each other out. This prevents the first rotating wheel 8 or the guide wheel 17 from deflecting, jamming, or becoming difficult to rotate due to a large radial force (resultant force).

[0099] 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.

[0100] To prevent Figure 14 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 annular grooves, and the two first ropes 6 arranged in a figure-eight shape are respectively wound around the two annular grooves.

[0101] <Example 3> Figures 15 to 30 A specific embodiment of the photovoltaic system of this application is shown, the photovoltaic system including multiple ( Figure 15 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.

[0102] In this embodiment, the first driving 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 third rotating wheel 11 to drive the third rotating wheel 11 to rotate around its own axis.

[0103] Please refer to Figure 16 and combined Figure 17 and Figure 18In this embodiment, each photovoltaic device includes a second rope 12 and a third rope 13. The two ends of the second rope 12 are respectively wrapped around and fixed to the third rotating wheel 11 and the second rotating wheel 9. The two ends of the third rope 13 are also respectively wrapped around and fixed to the third rotating wheel 11 and the second rotating wheel 9. Furthermore, one end of the second rope 12 and one end of the third rope 13 are wrapped around and fixed to the third rotating wheel 11 in opposite directions, and the other ends of the second rope 12 and the third rope 13 are wrapped around and fixed to the second rotating wheel 9 in opposite directions. Thus, the second rope 12, the third rope 13, the third rotating wheel 11, and the second rotating wheel 9 together form a rotating structure. When the third rotating wheel 11 rotates forward or backward under the power of the first motor 5, it can be pulled forward or backward by the second rope 12 or the third rope 13 fixed to it, thereby causing the second rotating wheel 9 to rotate forward or backward via the first rope 6, and thus adjusting the angle of each photovoltaic panel 4.

[0104] Compared to Embodiment 1, this embodiment removes the gear 18 on the second rotating shaft 10, changes the installation position of the first motor 5, and allows multiple photovoltaic devices to share the same first motor 5.

[0105] It is understandable that when the first motor 5 drives the third pulley 11 to wind one of the second rope 12 and the third rope 13, the other of the second rope 12 and the third rope 13 is wound by the second pulley 9 and unwound from the third pulley 11. Due to factors such as the different winding radii of the second rope 12 and the third rope 13 on the corresponding pulleys when the first motor 5 is running, it is difficult to ensure that the winding speed of the third pulley 11 on the corresponding rope is consistent with the winding speed of the second pulley 9 on the other rope. This may cause the first motor 5 to fail to drive the third pulley 11 to rotate normally. To solve this problem, this embodiment appropriately lengthens both the second rope 12 and the third rope 13, so that when one of the second rope 12 and the third rope 13 is in a taut state, the other is always in a slack state. For example... Figure 20 In this process, after the first motor 5 drives the third rotating wheel 11 to rotate clockwise to a certain position, the second rope 12 is in a taut state due to the winding of the third rotating wheel 11, while the third rope 13 is in a slack state. If the first motor 5 continues to drive the third rotating wheel 11 to rotate clockwise in this state, even if the winding speed of the second rotating wheel 9 on the third rope 13 is greater than the winding speed of the third rotating wheel 11 on the second rope 12, the third rope 13 will not be overly taut because it has a slack allowance. For example... Figure 26In the process, after the first motor 5 drives the third rotating wheel 11 to rotate counterclockwise to a certain position, the third rope 13 is in a taut state due to the winding of the third rotating wheel 11. At this time, the second rope 12 is in a slack state. If the first motor 5 continues to drive the third rotating wheel 11 to rotate counterclockwise in this state, even if the winding speed of the second rotating wheel 9 on the second rope 12 is greater than the winding speed of the third rotating wheel 11 on the third rope 13, the second rope 12 will not be too taut because it has a slack margin.

[0106] It is understandable that the above design 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 second rope 12 and / or the third rope 13 between the second wheel 9 and the third wheel 11. For example, the tension may increase as the first support 1 is flipped upwards, causing both the second rope 12 and the third rope 13 to be stretched. In this embodiment, a slack margin is provided in the rope between the second wheel 9 and the third wheel 11. Before the first support 1 is flipped upwards, the first motor 5 drives the third wheel 11 to rotate a certain angle in the corresponding direction, thereby ensuring that both the second rope 12 and the third rope 13 are in a slack state. Figure 24 Then flip the first support 1 up.

[0107] Figure 19 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 second rope 12 is in a taut state, and the third rope 13 is in a slack state.

[0108] Figures 20 to 22 The diagrams demonstrate the interaction between the third rotating wheel 11 and the second rotating wheel 9 at specific times in the morning, noon, and afternoon. The first motor 5 drives the third rotating wheel 11 to rotate clockwise, which in turn drives the second rotating wheel 9 to rotate clockwise via the tensioned second rope 12. The second rotating wheel 9 then drives the photovoltaic panel 4 to rotate clockwise. During this process, the third rotating wheel 11 unwinds the third rope 13, while the second rotating wheel 9 winds the third rope 13, with the third rope 13 always remaining slack.

[0109] Figure 23 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.

[0110] The first motor 5 can perform the following adjustment operations before sunrise on the second day. For details, please refer to... Figures 24 to 27 .

[0111] Figure 24The diagram illustrates the interaction between the third wheel 11 and the second wheel 9 during the initial adjustment phase. Specifically, the first motor 5 drives the third wheel 11 to rotate counterclockwise. At this time, the third wheel 11 unwinds the second rope 12 and winds up the third rope 13. The second rope 12 changes from a taut state to a slack state, and the slack of the third rope 13 gradually decreases. The second wheel 9 does not rotate with the third wheel 11, and the photovoltaic panel 4 remains in the aforementioned second position.

[0112] Refer to Figure 25 ,exist Figure 25 In the middle, the third wheel 11 winds the third rope 13 counterclockwise to a certain length so that the third rope 13 is just in a taut state, while the second rope 12 is in a slack state.

[0113] Next, please refer to Figure 26 and Figure 27 The second wheel 9 continues to wind the third rope 13 counterclockwise, thereby driving the third wheel 11 to rotate counterclockwise through the tensioned third rope 13. The second wheel 9 then drives the photovoltaic panel 4 to rotate counterclockwise. During this process, the third wheel 11 unwinds the second rope 12, and the second wheel 9 winds the second rope 12, with the second rope 12 always in a slack state.

[0114] When photovoltaic panel 4 rotates to Figure 28 After returning to the first position as shown, the first motor 5 stops driving the third rotating wheel 11 to rotate counterclockwise, and then... Figure 29 That drives the third wheel 11 to rotate clockwise in the opposite direction until the second rope 12 is in the position. Figure 30 Stop after reaching the tensioned state shown.

[0115] It is understandable that in order to prevent the photovoltaic panel 4 from rotating unexpectedly during use, the first rotating shaft 7 and the first support 1 can be set to friction fit. The first rotating shaft 7 will only rotate relative to the first support 1 when the torsional driving force it receives is large enough.

[0116] Please refer to Figure 17 To prevent adjacent second ropes 12 and / or third ropes 13 on the third rotating wheel 11 from interfering with each other during winding and unwinding, this embodiment provides a total of 12 rope grooves on the third rotating wheel 11. A total of 6 second ropes 12 and 6 third ropes 13 (one end) of the six photovoltaic devices are respectively wound into these 12 rope grooves.

[0117] 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, include: First support; A plurality of first rotating shafts are arranged parallel to each other along a first direction, and each of the first rotating shafts is connected to the first bracket in a manner that allows it to rotate about its own axis. Multiple photovoltaic panels are arranged along the first direction, and each photovoltaic panel is fixed to one of the multiple first rotating shafts in a corresponding manner. A first driving device is connected to the plurality of first rotating shafts via a first transmission assembly to drive each of the first rotating shafts to rotate around its respective axis. The first transmission component includes: A plurality of first rotating wheels, each of which is coaxially fixed to a plurality of first rotating shafts in a corresponding manner; and 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 second rotating shaft is connected to the first bracket in a manner that allows it to rotate about its own axis, and the second rotating shaft is arranged parallel to the first rotating shaft; and The second rotating wheel is coaxially fixed to the second rotating shaft; For the first rope connecting the two first spools at the far end, 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 second spool in opposite directions; The third rotating wheel is connected to the output end of the first driving device. Under the drive of the first driving device, the third rotating wheel rotates around its own axis. A second rope and a third rope, wherein one end of the second rope and one end of the third rope are respectively wrapped around and fixed to the second spool in opposite directions, and the other ends of the second rope and the third rope are respectively wrapped around and fixed to the third spool in opposite directions; When either the second rope or the third rope is in a taut state, the other is in a slack state.

2. The photovoltaic device according to claim 1, characterized in that, In any operating state, the sum of the circumference angles of at least two partially adjacent ends of the first ropes on the corresponding first reel is less than 360 degrees.

3. The photovoltaic device according to claim 2, characterized in that, In any working state, the sum of the circumference angles of at least two partially adjacent ends of the first ropes around a corresponding first wheel is no greater than 180 degrees.

4. The photovoltaic device according to claim 1, characterized in that, Each of the first rotating wheels has a first annular groove and a second annular groove arranged at intervals along the axial direction of the first rotating wheel, and one end of any two adjacent first ropes is respectively wrapped around the first annular groove and the second annular groove of the corresponding first rotating wheel.

5. The photovoltaic device according to claim 4, characterized in that, Each of the first rotating wheels has a first groove and a second groove extending inward along the axial direction on its first end face. The first groove and the second groove are arranged circumferentially on the first rotating wheel. The groove depth of the first groove extends from the outer circumferential surface of the first rotating wheel to the radial inner side of the first annular groove, thereby making the first groove communicate with the first annular groove. The groove depth of the second groove extends from the outer circumferential surface of the first rotating wheel to the radial inner side of the first annular groove and the second annular groove. Each of the first ropes is connected to a locking head at both ends. For any two adjacent first ropes, the locking head at one end of one first rope is inserted into the first locking groove from the first end face and is located radially inside the first annular groove, and the locking head at one end of the other first rope is inserted into the second locking groove from the first end face and is located radially inside the second annular groove.

6. The photovoltaic device according to claim 1, characterized in that, 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; or, The first support is provided with a plurality of tensioning wheels, and each of the first ropes is connected to one of the tensioning wheels.

7. The photovoltaic device according to claim 1, characterized in that, The first driving device is a motor.

8. The photovoltaic device according to claim 1, characterized in that, At least two of the first ropes that are partially adjacent to each other are integrally connected.

9. A photovoltaic system, characterized in that, It includes multiple photovoltaic devices as described in claim 7 or 8, wherein the first driving device in the multiple photovoltaic devices is the same motor.

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