CN216122324U - Photovoltaic device and photovoltaic system - Google Patents

Abstract

The application relates to a photovoltaic device and photovoltaic system, photovoltaic device includes: a first bracket; a plurality of first rotating shafts, each of which is connected to the first bracket in a manner of being capable of rotating around its own axis; a plurality of photovoltaic panels fixed to the plurality of first rotating shafts, respectively, in one-to-one correspondence; the first driving device is connected with the plurality of first rotating shafts through the first transmission assembly so as to drive the first rotating shafts to rotate around respective axes; the first transmission assembly includes: a plurality of first rotating wheels coaxially fixed to the plurality of first rotating shafts in a one-to-one correspondence, respectively; and a plurality of first ropes, wherein one first rope is respectively connected between every two adjacent first rotating wheels and between the two first rotating wheels at the extreme end, and one end of every two adjacent first ropes is respectively wound and fixed to the corresponding first rotating wheel in opposite directions. The photovoltaic device is low in cost of the transmission mechanism, high in reliability and capable of limiting the rotation angle of the photovoltaic panel.

Description

Photovoltaic device and photovoltaic system

Technical Field

The application relates to the photovoltaic field, in particular to a photovoltaic device and a photovoltaic system.

Background

Solar energy is increasingly applied as a clean renewable energy source, and particularly, a tracking photovoltaic power generation technology is a new solar energy utilization technology following a conventional photovoltaic power generation technology.

The solar tracking system can keep the photovoltaic panel to face the sun as far as possible, so that the generating capacity of the solar photovoltaic module is improved, the investment cost of the photovoltaic power generation system is effectively reduced, and the utilization rate of the solar photovoltaic module is improved.

Photovoltaic tracking systems that employ a plurality of photovoltaic panels to share a support are a trend in future solar tracking photovoltaic systems. The tracking photovoltaic support commonly used at present is mainly a single-motor connecting rod multi-point linkage structure, but the structure has a plurality of defects:

for example, the cost of parts is high, the installation is inconvenient, and the manual assembly cost is high; for another example, the connecting rod configured in the transmission mechanism is very long, so that the risk of twist deformation is easy to occur, and the service life of the tracking system is reduced; for another example, the transmission mechanism itself does not have a function of limiting the transmission angle, and once the operation angle of the motor is not well controlled, the photovoltaic panel may be damaged by colliding with the bracket.

Disclosure of Invention

The technical problem that this application was solved is: the photovoltaic device has the advantages of low cost and high reliability, and has a limiting function on the rotation angle of the photovoltaic panel.

The technical scheme of the application is as follows:

in a first aspect, the present application provides a photovoltaic device, comprising:

a first bracket;

a plurality of first rotating shafts which are arranged in parallel with each other in a first direction and each of which is connected to the first bracket so as to be rotatable about its axis;

a plurality of photovoltaic panels arranged in the first direction and fixed to the plurality of first rotating shafts in a one-to-one correspondence, respectively;

the first driving device is connected with the plurality of first rotating shafts through a first transmission assembly so as to drive the first rotating shafts to rotate around respective axes;

wherein the first transmission assembly comprises:

a plurality of first rotating wheels coaxially fixed to the plurality of first rotating shafts in a one-to-one correspondence, respectively; and

and a plurality of first ropes, wherein one first rope is respectively connected between every two adjacent first rotating wheels and between the two first rotating wheels at the extreme end, and one end of every two adjacent first ropes respectively surrounds and is fixed to the corresponding first rotating wheel in opposite directions.

In an alternative design, in any working state, the sum of the angles of the ends of at least two adjacent first ropes on the corresponding first rotating wheel is less than 360 degrees.

In an alternative design, in any working state, the sum of the surrounding angles of one ends of at least two adjacent first ropes on the corresponding first rotating wheel is not more than 180 degrees.

In an alternative design, the outer peripheral surface of each first rotating wheel is provided with first ring grooves and second ring grooves which are arranged at intervals along the axial direction of the first rotating wheel, and one end of any two adjacent first ropes is respectively wound in the first ring groove and the second ring groove of the corresponding first rotating wheel.

In an alternative design, a first end face of each first rotating wheel in the axial direction is provided with first clamping grooves and second clamping grooves which extend inwards in the axial direction of the first rotating wheel, the first clamping grooves and the second clamping grooves are arranged at intervals along the circumferential direction of the first rotating wheel, the groove depth of each first clamping groove extends from the outer circumferential surface of the first rotating wheel to the radial inner side of the corresponding first ring groove, so that the first clamping grooves are communicated with the corresponding first ring groove, and the groove depth of each second clamping groove extends from the outer circumferential surface of the first rotating wheel to the radial inner sides of the corresponding first ring groove and the corresponding second ring groove;

every a dop is all connected at the both ends of first rope, to arbitrary adjacent two first rope, one of them first rope one end the dop is followed first terminal surface embedding first draw-in groove, and be located the radial inboard of first annular, another first rope one end the dop is followed first terminal surface embedding second draw-in groove, and be located the radial inboard of second annular.

In an alternative design, each of the first ropes comprises a first rope segment, a second rope segment, 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 first rope is connected with one tensioning wheel.

In an alternative design, the first transmission assembly further includes:

a second rotating shaft which is connected to the first bracket in a manner of rotating around the axis of the second rotating shaft, and the second rotating shaft is arranged in parallel with the first rotating shaft; and

a second runner coaxially fixed to the second shaft;

for the first rope connected between the two first pulleys at the extreme end, the first rope comprises a third rope segment and a fourth rope segment, and one end of the third rope segment and one end of the fourth rope segment respectively surround and are fixed to the second pulley in opposite directions;

the first driving device is a motor for driving the second rotating shaft to rotate.

In an alternative design, at least two of the first ropes, which are at least partially adjacent, are integrally connected. In a second aspect, the present application provides a photovoltaic system, including a plurality of photovoltaic devices as described in the first aspect, wherein the first driving device in the plurality of photovoltaic devices is a same motor, and the motor is connected to a third runner to drive the third runner to rotate around its 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 wound around and fixed to the second runner in opposite directions, and the other end of the second rope and the other end of the third rope are respectively wound around and fixed to the third runner in opposite directions.

In an alternative design, when either of the second and third cords is in tension, the other is in a relaxed state.

The application has at least the following beneficial effects:

the photovoltaic device comprises a photovoltaic panel, a first transmission assembly and a second transmission assembly, wherein the first transmission assembly is used for transmitting driving force to the photovoltaic panel, main parts of the first transmission assembly are ropes with low cost, and the ropes mainly bear tensile stress when in use, so that the photovoltaic device is high in reliability, not easy to damage and long in service life.

2, each rope and runner in the first drive assembly adopt specific structure to mutually support, utilize the mechanical structure of first drive assembly self alright restriction photovoltaic board's turned angle to avoid photovoltaic board and support to produce the collision, guarantee the life of photovoltaic board, also help the especially increase design of length size of photovoltaic board.

And 3, the photovoltaic system comprising a plurality of photovoltaic devices in the application drives the photovoltaic panel in each photovoltaic device to rotate by using the same first motor, so that the equipment cost is saved, and the photovoltaic system is easy to install.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description only relate to some embodiments of the present application and are not limiting on the present application.

Fig. 1 is a schematic view of an overall structure of a photovoltaic device according to an embodiment of the present application.

Fig. 2 is a partial structural view of fig. 1.

Fig. 3 is a schematic view of the structure shown in fig. 2 from another perspective.

Fig. 4 is an enlarged schematic view of a portion X1 in fig. 3.

Fig. 5 is a partially enlarged schematic view of the upper right corner of fig. 3.

Fig. 6 is a schematic structural view of the second bracket and the like in fig. 3 from another perspective after the second bracket and the like are removed.

Fig. 7 is an enlarged schematic view of the X2 part of fig. 6.

Fig. 8 is a schematic cross-sectional view of the photovoltaic panel of fig. 6 with the photovoltaic panel removed.

Fig. 9 is a schematic view of the structure of the first pulley and two adjacent first ropes according to the first embodiment of the present application.

Fig. 10 is a schematic view of the structure of fig. 9 from another perspective.

Fig. 11 is an exploded view of fig. 9.

Fig. 12 is an exploded view of the telescopic connector according to the first embodiment of the present application.

Fig. 13 is a schematic cross-sectional view of a telescopic connector according to an embodiment of the present application.

Fig. 14 is a partial structural schematic diagram of a photovoltaic device according to a second embodiment of the present application.

Fig. 15 is a schematic structural diagram of a photovoltaic system in an embodiment three of the present application.

Fig. 16 is a partial schematic view of fig. 15.

Fig. 17 is an enlarged schematic view of the portion X3 in fig. 16.

Fig. 18 is an enlarged schematic view of a portion X4 in fig. 16.

Fig. 19 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 20 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 21 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 22 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 23 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 24 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 25 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 26 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 27 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 28 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 29 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Fig. 30 is a schematic view of a matching structure of the first motor, the sixth pulley, the seventh pulley, the fourth rope, the fifth rope and the photovoltaic panel in the third embodiment of the present application.

Description of reference numerals:

c1 — first axis of rotation;

f1-first direction, F2-second direction;

1-a first support, 2-a second support, 3-a second motor, 4-a photovoltaic panel, 5-a first motor, 6-a first rope, 7-a first rotating shaft, 8-a first rotating wheel, 9-a second rotating wheel, 10-a second rotating shaft, 11-a third rotating wheel, 12-a second rope, 13-a third rope, 14-a fourth rotating wheel, 15-a fifth rotating wheel, 16-a fourth rope, 17-a guide wheel, 18-a gear;

601-a first rope segment, 602-a second rope segment, 603-a telescopic connector, 604-a third rope segment, 605-a fourth rope segment;

6031-first component, 6031 a-first rotating pin, 6031 b-first threaded hole;

6032-second component, 6032 a-first threaded section, 6032 b-second threaded section, 6032 c-external hex section;

6033-third element, 6033 a-second threaded hole, 6033 b-third threaded hole;

6034-fourth component, 6034 a-second rotating pin, 6034 b-third threaded section;

6035-nut;

6036-pressure spring;

6037-external thread sleeve;

6 a-clamping head;

801-first ring groove, 802-second ring groove, 803-first clamping groove, 804-second clamping groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application. It will be understood that some of the technical means of the various embodiments described herein may be replaced or combined with each other without conflict.

In the description of the present application and claims, the terms "first," "second," and the like, if any, are used solely to distinguish one from another as between described objects and not necessarily in any sequential or technical sense. Thus, an object defined as "first," "second," etc. may explicitly or implicitly include one or more of the object. Also, the use of the terms "a" or "an" and the like, do not denote a limitation of quantity, but rather denote the presence of at least one of the two, and "a plurality" denotes no less than two.

In the description of the present application and the claims, the terms "connected," "mounted," "fixed," "housed," and the like are used broadly unless otherwise indicated. For example, "connected" may be a separate connection or may be integrally connected; can be directly connected or indirectly connected through an intermediate medium; may be non-detachably connected or may be detachably connected. For example, "accommodated" does not necessarily mean that the entire body is completely accommodated, and the concept also includes a partial accommodation case in which a part protrudes outward. The specific meaning of the foregoing terms in the present application can be understood by those skilled in the art as appropriate.

In the description of the present application and in the claims, if there is an orientation or positional relationship indicated by the terms "upper", "lower", "horizontal", etc. based on the orientation or positional relationship shown in the drawings, it is only for the convenience of clearly and simply describing the present application, and it is not indicated or implied that the elements referred to must have a specific direction, be constructed and operated in a specific orientation, and these directional terms are relative concepts for the sake of description and clarification and may be changed accordingly according to the change of orientation in which the elements in the drawings are placed. For example, if the device in the figures is turned over, elements described as "below" other elements would then be oriented "above" the other elements.

In the description of the present application and in the claims, the presence of the terms "in sequence" and "sequentially", for example the phrase "A, B, C arranged in sequence", merely indicates the order of arrangement of the elements A, B, C and does not exclude the possibility of arranging other elements between a and B and/or between B and C.

In the description of the present specification and claims, the terms "laminated" and "lamination", if any, include not only a case where they are laminated (or laminated) in contact with each other but also a case where they are laminated (or laminated) with another layer interposed therebetween.

In the description of the specification and claims, the terms "based on" and "based on," if any, are used to describe one or more factors that affect the determination. The term does not exclude additional factors that influence the determination. That is, the determination may be based solely on these factors or at least partially on these factors. For example, the phrase "determine B based on a," in which case a is a factor that affects the determination of B, does not exclude that the determination of B may also be based on C.

In the description of the specification and claims of this application, the term "responsive 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, A may respond directly or indirectly to B. For example, the occurrence of B may ultimately lead to the occurrence of a, but other intermediate events and/or conditions may exist. In other cases, B may not necessarily result in the occurrence of a, and a may occur even though B has not yet occurred. Furthermore, the term "responsive to" may also mean "at least partially responsive to". The term "determining" broadly encompasses a wide variety of actions that can include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure), ascertaining and the like, and can also include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory) and the like, as well as resolving, selecting, choosing, establishing and the like. Relevant definitions for other terms will be given in the following description.

In the description of the present specification and claims, the term "if present may generally be interchangeable with" when … "or" at … "or" in response to a determination "or" in response to a detection ", depending on the context.

In the description of the specification and claims of this application, the term "configured to" if present is generally interchangeable with "… capable", "designed to", "for", or "capable", depending on the context.

In the description of the present specification and claims, if there is "direction" with respect to motion, including motion having a directional component, the term "in direction" is not necessarily to be construed as motion in only that one direction, and those skilled in the art will understand the specific meaning of the aforementioned terms in the present application as the case may be.

Embodiments of the present application will now be described with reference to the accompanying drawings.

< example one >

Fig. 1 to 13 show a specific embodiment of a photovoltaic device of the present application, which comprises a first support 1, a plurality of first rotating shafts 7, a plurality of photovoltaic panels 4, and a first driving device. Wherein:

the plurality of first rotating shafts 7 are arranged in parallel to each other in the first direction F1, and each of the first rotating shafts 7 is connected to the first bracket 1 in such a manner as to be rotatable about its own axis. The weight of the first rotating shaft 7 is supported by the first support 1.

The plurality of photovoltaic panels 4 are also arranged in the first direction F1, and the plurality of photovoltaic panels 4 are fixed to the plurality of first rotating shafts 7 in a one-to-one correspondence, respectively. When the first rotating shaft 7 rotates, the photovoltaic panel 4 fixed to the first rotating shaft 7 rotates therewith, thereby adjusting the incident angle of the photovoltaic panel 4. The weight of the photovoltaic panel 4 is also borne by the first support 1.

The first driving device is connected with the plurality of first rotating shafts 7 through a first transmission assembly so as to drive the first rotating shafts 7 to rotate around respective axes.

The first transmission assembly comprises a plurality of first pulleys 8 and a plurality of first ropes 6. The plurality of first pulleys 8 are coaxially fixed to the plurality of first shafts 7 in one-to-one correspondence, respectively. One first rope 6 is connected between every two adjacent first pulleys 8 and between the two first pulleys 8 at the extreme ends, and one end of every two adjacent first ropes 6 is wound around and fixed to a corresponding one of the first pulleys 8 in opposite directions. Thus, the plurality of first rotating wheels 8 and the plurality of first ropes 6 jointly form a rotating structure, when one of the first rotating wheels 8 rotates under the action of power, the first rotating wheel 8 can pull the second first rotating wheel 8 adjacent to the first rotating wheel to rotate through the first rope 6 fixedly connected with the first rotating wheel, then the second first rotating wheel 8 drives the third first rotating wheel 8 adjacent to the second rotating wheel to rotate, and thus each first rotating wheel 8 is driven to rotate, so that the angle of each photovoltaic panel 4 is adjusted.

Referring to fig. 9 to 11 in conjunction with fig. 5, 7 and 8, the above-mentioned "surrounding and fixing in opposite directions, respectively" has the meaning: for two adjacent first ropes 6, one end of one first rope 6 is wound around and fixed to the corresponding first pulley 8 in a clockwise direction, and one end of the other first rope 6 is wound around and fixed to the first pulley 8 in a counterclockwise direction.

It is understood that "surrounding" includes surrounding around the entire circumference, as well as surrounding around less than the entire circumference (e.g., half-circumference).

However, if the end of each first rope 6 is wound around the corresponding first pulley 8 for the whole circumference (more than 360 °), there will be the drawback that:

under the power of the first driving device, the first rope 6 may pull the first pulley 8 to turn over all the round or even several weeks (the first pulley 8 unwinds the first rope 6), and then the photovoltaic panel 4 is driven to rotate all the round. If it is ensured that the photovoltaic panel 4 can rotate around the entire circumference, the length of the photovoltaic panel 4 must be smaller than the length of the first rotating shaft 7, otherwise (i.e. the length of the photovoltaic panel 4 is larger than the first rotating shaft 7), the photovoltaic panel 4 must be damaged by the blocking impact of the first support 1. Reducing the length of the photovoltaic panel 4 not only reduces the power generation capacity of the photovoltaic device, but also increases the overall cost of the photovoltaic device.

For the above reasons, in order to limit the rotatable range of the photovoltaic panel 4 to an angle that does not block collision with the first bracket 1, which may have various possibilities depending on the first bracket and the photovoltaic panel, but in general, the rotatable range of the photovoltaic panel 4 should be controlled within 360 degrees, the present embodiment is designed as follows: in any working state, the sum of the surrounding angles of one ends of at least two adjacent first ropes 6 on the corresponding one first rotating wheel 8 (i.e. the first rotating wheel connecting the two adjacent first ropes) is less than 360 degrees.

The "operating state" in the "arbitrary operating state" means a state of the photovoltaic device in normal use, and does not include a state in inspection, and further does not include a state in which the photovoltaic device is damaged.

Referring to fig. 9 to 10 in combination with fig. 11, in fig. 11, the angle of the first rope 6 around the first wheel 8 is 240 °, and the angle of the second first rope 6 around the first wheel 8 is 60 °. If the first rope 6 pulls the first pulley 8 to rotate counterclockwise in fig. 11, at a time point after the surrounding section of the first rope 6 on the first pulley 8 is completely paid out, the pulling direction of the first rope 6 to the first pulley 8 passes through the rotation axis of the first pulley 8, and no rotating moment is generated, no matter how much pulling force is applied to the first pulley 8 by the first rope 6 at this time, the first pulley 8 will not continue to rotate counterclockwise due to the pulling force, and the counterclockwise rotating angle of the first pulley 8 is (or is slightly larger than) 240 °. Similarly, if the second first rope 6 pulls the first pulley 8 to rotate clockwise in fig. 11, at a time point after the second first rope 6 is completely paid out on the first pulley 8, the pulling direction of the second first rope 6 to the first pulley 8 passes through the rotation axis of the first pulley 8, no rotating moment is generated, no matter how much pulling force is applied to the first pulley 8 by the second first rope 6, the first pulley 8 will not continue to rotate clockwise due to the pulling force, and the counterclockwise rotation angle of the first pulley 8 is (or is slightly greater than) 60 °. It can be seen that in this embodiment, if only the fitting relationship of the first rope to the first pulley is considered, the maximum possible rotation angle of the photovoltaic panel 4 is about 300 °.

It can be understood that the smaller the maximum rotation angle of the photovoltaic panel 4, the less disturbing the movement of the photovoltaic panel 4 by the first support 1, and the easier the position of the photovoltaic panel 4 on the first support 1 can be set. Coincidentally, the sun does not change more than 180 ° in the angle of illumination during the day, whereby in another embodiment, the sum of the angles of the one ends of at least two adjacent first ropes 6 on a respective one of the first pulleys 8 is not more than 180 ° in any operating condition.

It is understood that "at least partially adjacent two first cords" means: it is not necessary, but not excluded, that all adjacent two first cords (or each adjacent two first cords) have the above-mentioned characteristics.

Referring to fig. 9 to 11 again, in order to prevent the two adjacent first ropes 6 from interfering with each other during winding and unwinding, a first annular groove 801 and a second annular groove 802 are formed on the outer circumferential surface of each first pulley 8 and are arranged at intervals along the axial direction of the first pulley 8, and one end of each of the two adjacent first ropes 6 is respectively wound in the first annular groove 801 and the second annular groove 802 of the corresponding first pulley 8.

Further, an end face of each first runner 8 in the axial direction thereof (for convenience of description, this end face is referred to as a first end face) is formed with a first catching groove 803 and a second catching groove 804 extending inward in the axial direction of this first runner 8, and the first catching groove 803 and the second catching groove 804 are arranged at intervals in the circumferential direction of the first runner 8. The groove depth of the first clamping groove 803 extends from the outer peripheral surface of the first runner 8 to the radial inner side of the first ring groove 801, so that the first clamping groove 803 is communicated with the first ring groove 801. The groove depth of the second engaging groove 804 extends from the outer peripheral surface of the first runner 8 to the radial inner sides of the first and second annular grooves 801 and 802, so that the second engaging groove 804 is communicated with the first and second annular grooves 801 and 802, respectively. Two ends of each first rope 6 are connected with a clamping head 6a (similar to a brake pull wire), for any two adjacent first ropes 6, the clamping head 6a at one end of one first rope 6 is embedded into the first clamping groove 803 from the first end surface and is positioned at the radial inner side of the first annular groove 801, and the clamping head 6a at one end of the other first rope 6 is embedded into the second clamping groove 804 from the first end surface and is positioned at the radial inner side of the second annular groove 802, so that the fixed connection between the two adjacent first ropes 6 and the first rotating wheel 8 is realized.

There are unavoidable dimensional errors in the length of each first cord 6, which may result in each first cord 6 being difficult to connect in full tension between two first pulleys 8, thereby affecting the consistency of the rotational cadence of each photovoltaic panel 4 when in use. To this end, the present embodiment provides each of the first ropes 6 in a structure in which: referring to fig. 4 and 5 in combination with fig. 7 and 8, the first ropes 6 include a first rope portion 601, a second rope portion 602, and a telescopic connector 603 connecting the first rope portion 601 and the second rope portion 602, and the length error of the first ropes 6 is compensated by the elastic telescopic connector 603, so as to ensure that each first rope 6 can be connected between two corresponding first pulleys 8 in a tensioned manner.

In another embodiment, each first rope 6 is of a one-piece structure, a plurality of tension pulleys are arranged on the first bracket 1, and each first rope 6 is connected with one tension pulley respectively, so that each first rope 6 is connected between two corresponding first pulleys 8 in a tensioning mode through the tension pulleys.

As can be seen from the above, in the present embodiment, two adjacent first ropes 6 are indirectly fixedly connected by the first pulley 8 therebetween. It should be noted that two adjacent first ropes 6 may be directly and fixedly connected without the aid of the first pulley 8 to form a long rope, and then a portion of the long rope is locked to the corresponding first pulley 8 by means of a fastener, for example, in another embodiment, two adjacent first ropes 6 are integrally connected to form a long rope, the long rope may be divided into two first ropes which are integrally connected, and then a portion of the long rope is locked to the corresponding first pulley 8 by means of a fastener, so that the two divided first ropes respectively surround and are fixed to the corresponding first pulley in opposite directions, which is not excluded by the scope of the present invention.

In the present embodiment, the telescopic connector 603 includes a first element 6031, a second element 6032, a third element 6033 and a fourth element 6034 which are arranged in sequence along the second direction F2 as shown in the drawing. Wherein:

the first element 6031 is used for connecting one end of the first rope portion 601. Specifically, the first element 6031 has a first end and a second end oppositely disposed 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 in the second direction F2. In use, one end of the first rope segment 601 is wound around the first rotation pin 6031a and folded in half, and then the folded end of the first rope segment 601 is fastened and fixed by the first rope fastener. The other end of the first rope portion 601 is fixed to one of the first turning wheels 8.

The second member 6032 is used to connect the first member 6031 and the third member 6033. Specifically, the second member 6032 has a third end and a fourth end oppositely disposed in the second direction F2, wherein the third end is provided with a first threaded segment 6032a extending in the second direction F2 and the fourth end is provided with a second threaded segment 6032b extending in the second direction F2.

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 oppositely disposed in the aforementioned second direction F2, wherein the fifth end is provided with a second threaded hole 6033a extending in the second direction F2 and the sixth end is provided with a third threaded hole 6033b extending in the second direction F2.

A 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 oppositely disposed in the 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 in the second direction F2. In use, one end of the second rope segment 602 is wound around the second rotating pin 6034a and folded in half, and then the folded-in end of the first rope segment 601 is fastened by the second rope fastener. The other end of the second rope portion 602 is fixed to the other first turning wheel 8.

The thread directions of the first threaded hole 6031b and the second threaded hole 6033a are opposite, the thread directions of the first threaded section 6032a and the second threaded section 6032b are opposite, the first threaded section 6032a is screwed with the first threaded hole 6031b, and the second threaded section 6032b is screwed with the second threaded hole 6033 a. With this arrangement, it is possible to simultaneously connect and disconnect the second member 6032 to and from the first member 6031 and the third member 6033 by rotating the second member 6032 in one direction.

The fourth element 6034 is sleeved with a nut 6035, a pressure spring 6036 and an external sleeve 6037 in sequence along the second direction F2. The nut 6035 is screwed with the third threaded section 6034b, the outer sleeve 6037 is screwed with the third threaded hole 6033b, the pressure spring 6036 is clamped between the nut 6035 and the outer sleeve 6037, and the nut 6035 and the pressure spring 6036 are all accommodated in the third threaded hole 6033 b. In use, the worker can rotate the second element 6032 forward/backward to adjust the distance between the first element 1 and the third element 6033, and further adjust the tension of the first rope 6 and the distance between the two ends of the first rope 6, so that the tension of each first rope 6 is equal, and the angle of each photovoltaic panel 4 is consistent.

It can be understood that when the tensile force of the first rope segment 601 and the second rope segment 602 which are far away from each other is increased, the pressure spring 6036 is shortened; when the tensile force of the first rope portion 601 and the second rope portion 602, which are away from each other, is reduced, the compression spring 6036 is lengthened.

To facilitate the adjustment of the second component 6032 by the operator, the second component 6032 of this embodiment further includes an external hex segment 6032c that is engageable with a wrench between the first threaded segment 6032a and the second threaded segment 6032 b.

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 such a manner as to be rotatable about its own axis, and the second rotating shaft 10 is disposed in parallel with the first rotating shaft 7. The second rotor 9 is coaxially fixed to the second shaft 10.

Referring to fig. 7, for the first rope 6 connected between the two first pulleys 8 at the extreme end, the first rope 6 includes a third rope portion 604 and a fourth rope portion 605, and one end of the third rope portion 604 and one end of the fourth rope portion 605 are respectively wound around and fixed to the second pulley 9 in opposite directions. The first driving device is a motor for driving the second rotating shaft 10 to rotate, and specifically is the first motor 5 shown in fig. 2 and 3.

When the second rotating shaft 10 is driven by the first motor 5 to rotate, the second rotating wheel 9 is driven by the first rope 6 to rotate with each first rotating wheel 8, so that the angle of each photovoltaic panel 4 is adjusted.

In the present embodiment, the first motor 5 is specifically connected to and drives the second rotating shaft 10: referring again to fig. 7, the first transmission assembly further comprises a gear 18 coaxially fixed to the second shaft 10, and the first motor 5 is fixed to the first frame 1 and connected to a power gear engaged with the gear 18 and shielded by a shield in fig. 2 and 3. When the electric spindle works, the first motor 5 applies rotary power to the power gear, the power gear drives the gear 18 engaged with the power gear to rotate, and the gear 18 drives the second rotating shaft 10 fixed with the gear to rotate.

The rotation of the first rotating shaft 7 can only realize the angle adjustment of the photovoltaic panel 4 in one direction, and cannot realize the simultaneous tracking of the longitude and the latitude of the sunlight by the photovoltaic panel 4. In view of this, the photovoltaic device is further provided with a second support 2 and a second driving device, so that each photovoltaic panel 4 can rotate around two rotation axes perpendicular to each other, thereby realizing real-time vertical tracking of sunlight by the photovoltaic panels 4.

Specifically, the first carriage 1 is connected to the upper side of the second carriage 2 so as to be rotatable about the first rotation axis C1, and the weight of the first carriage 1 is supported by the second carriage 2. The second driving means are used to drive the first carriage 1 in rotation around the aforesaid first rotation axis C1, wherein the first rotation axis C1 is perpendicular to the axis of the first rotation shaft 7.

In the present embodiment, the first rotation axis C1 is extended in the east-west direction, so that the latitude tracking of the photovoltaic panel 4 with respect to sunlight can be realized by controlling the first support 1 to rotate around the first rotation axis C1, and the longitude tracking of the photovoltaic panel 4 with respect to sunlight can be realized by controlling the photovoltaic panel 4 to rotate around the first rotation axis. The first direction F1 is parallel to the first rotation axis C1. Therefore, the photovoltaic device is convenient to build on site and use later, and the structural compactness of the photovoltaic device is improved.

In the present embodiment, the second driving means is also a motor, in particular the second motor 3 shown in fig. 3. The second motor 3 is connected with the telescopic rod connected between the first support 1 and the second support 2 and used for driving the telescopic rod to extend and shorten, so that the first support 1 is driven to turn up and fall down, and the angle of the photovoltaic panel 4 is adjusted.

In this embodiment, the first rope 6 is a steel wire rope, each photovoltaic panel 4 is a rectangular strip structure with a length of 1.5-3 m and a width of 0.2-0.4 m, and the length of the rectangular strip structure is perpendicular to the first direction F1.

For the sake of drawing and clarity, some of the drawings simplify the structure of the telescopic connector 603, and some of the drawings directly hide the telescopic connector 603 on the first rope 6.

In addition, referring to fig. 5 and 7, in order to make the rotational driving force applied to each first rotating shaft 7 more balanced, in the present embodiment, each first pulley 8 is respectively disposed at one end of each first rotating shaft 7, the second pulley 9 is disposed at one end of the second rotating shaft 10, a fourth pulley 14 symmetrically disposed with respect to the first pulley 8 is coaxially fixed at the other end of each first rotating shaft 7, a fifth pulley 15 symmetrically disposed with respect to the second pulley 9 is coaxially fixed at the other end of the second rotating shaft 10, a fourth rope 16 symmetrically disposed with respect to the corresponding first rope 6 is fixedly connected between any two adjacent fourth pulleys 14, and the connection method and structure of each fourth rope 16 are substantially the same as those of the corresponding first rope 6. For the sake of brevity, no further description is provided herein.

< example two >

Fig. 14 is a schematic partial structural view of a photovoltaic device according to a second embodiment of the present application, which has substantially the same structure as the photovoltaic device according to the first embodiment, and can be understood with reference to the description of the first embodiment, the main differences being:

only one guide wheel 17 is provided for each of all the first pulleys 8 except for the two first pulleys 8 at the extreme ends, and the two first ropes 6 led from the first pulleys 8 are led to the first pulleys 8 on both sides after passing around the guide wheels 17 in a crossing manner. Thus, the two first ropes 6 between the first rotating wheel 8 and the corresponding guide wheel 17 are arranged in an 8 shape, and when the two first ropes are in work, the directions of radial acting forces from the first ropes 6 on the first rotating wheel 8 and the guide wheel 17 are opposite and mutually offset, so that the first rotating wheel 8 or the guide wheel 17 is prevented from deflecting and jamming and being difficult to rotate due to larger radial acting forces (resultant force).

The leading wheel is used for guiding the trend of two adjacent first ropes, prevents that photovoltaic board from touching first rope in the course of the work to do benefit to photovoltaic board can be adjusted at the rotation of bigger angular range. If reject the leading wheel, the rotatable angle scope of photovoltaic board will greatly reduced.

In order to prevent the two first ropes 6 from interfering with each other at the middle two guide wheels 17 shown in fig. 14, the two guide wheels 17 are also respectively provided with two ring grooves, and the two first ropes 6 arranged in a shape like a "8" are respectively wound in the two ring grooves.

< example three >

Fig. 15-30 show a specific embodiment of a photovoltaic system of the present application, which includes a plurality (six are illustrated in fig. 15) of photovoltaic devices having a structure similar to that of the embodiment, which together constitute the photovoltaic system of the present embodiment. The structure of each photovoltaic device in this embodiment can be understood with reference to the description of the first embodiment.

In the present embodiment, the first driving device in the plurality of photovoltaic devices is the same first motor 5, that is, the plurality of photovoltaic devices share the same first motor 5 to drive the photovoltaic panel 4 in each photovoltaic device to rotate, and the first motor 5 is connected to the third runner 11 to drive the third runner 11 to rotate around its axis.

Referring to fig. 16 in combination with fig. 17 and 18, in the present embodiment, each photovoltaic device includes a second rope 12 and a third rope 13. The second rope 12 is at its two ends wound around and fixed to the third wheel 11 and the second wheel 9, respectively. The third rope 13 is also wound around and fixed to the third wheel 11 and the second wheel 9 at its two ends, respectively. And, one end of the second rope 12 and one end of the third rope 13 are wound and fixed to the third runner 11 in opposite directions, respectively, and the other end of the second rope 12 and the other end of the third rope 13 are wound and fixed to the second runner 9 in opposite directions, respectively. Therefore, the second rope 12, the third rope 13, the third runner 11 and the second runner 9 jointly form a rotating structure, when the third runner 11 rotates forwards or reversely under the power action of the first motor 5, the third runner 11 can be pulled to rotate forwards or reversely with the second runner 9 through the second rope 12 or the third rope 13 fixed with the third runner 11, and then the second runner 9 is driven to rotate with each first runner 8 through the first rope 6, so that the angle of each photovoltaic panel 4 is adjusted.

Compared with the first embodiment, the present embodiment removes the gear 18 on the second rotating shaft 10, changes the installation position of the first motor 5, and the photovoltaic devices share the same first motor 5.

It is understood 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 the relevant factors, such as the winding radius of the second rope 12 and the third rope 13 on the corresponding rotating wheels is different when the first motor 5 operates, it is difficult to ensure that the winding speed of the third rotating wheel 11 on the corresponding rope is consistent with the winding speed of the second rotating wheel 9 on the other rope, which may result in that the first motor 5 cannot normally drive the third rotating wheel 11 to rotate. To address this problem, the present embodiment suitably lengthens both the second and third cords 12, 13 so that when either of the second and third cords 12, 13 is in tension, the other must be in a relaxed condition. For example, in fig. 20, after the first motor 5 drives the third pulley 11 to rotate clockwise to a certain position, the second rope 12 is in a tensioned state due to being wound by the third pulley 11, and at this time, the third rope 13 is in a relaxed state, if the first motor 5 continues to drive the third pulley 11 to rotate clockwise in this state, even if the winding speed of the second pulley 9 on the third rope 13 is greater than the winding speed of the third pulley 11 on the second rope 12, the third rope 13 has a slack margin, so that the situation that the third rope 13 is too tensioned does not occur. For example, in fig. 26, after the first motor 5 drives the third pulley 11 to rotate counterclockwise to a certain position, the third rope 13 is in a tensioned state due to being wound by the third pulley 11, and at this time, the second rope 12 is in a relaxed state, and if the first motor 5 continues to drive the third pulley 11 to rotate counterclockwise in this state, even if the winding speed of the second pulley 9 on the second rope 12 is greater than the winding speed of the third pulley 11 on the third rope 13, the second rope 12 has a slack margin, and therefore, the second rope 12 is not excessively tensioned.

It will be appreciated that the above design also has the advantage of: in use, the angle of the first bracket 1 may be adjusted as required, which may thus result in a change in the tension of the second rope 12 or/and the third rope 13 between the second wheel 9 and the third wheel, e.g. an increase in tension may be caused by the first bracket 1 turning up, resulting in both the second rope 12 and the third rope 13 being stretched. In this embodiment, a slack margin is provided for the rope between the second rotating wheel 9 and the third rotating wheel 11, and before the first bracket 1 is turned up, the first motor 5 drives the third rotating wheel 11 to rotate in a corresponding direction by a certain angle, so that the second rope 12 and the third rope 13 are both in a slack state, as shown in fig. 24, and then the first bracket 1 is turned up.

Fig. 19 shows the angle of the photovoltaic panel 4 when the sun just rises in the morning, and for convenience of description, the angular position of the photovoltaic panel 4 at this time is referred to as a first position. At this point, the second cord 12 is in tension and the third cord 13 is in slack.

Fig. 20 to 22 show the cooperation of the third reel 11 and the second reel 9 at certain times of the morning, noon and afternoon, respectively. Wherein first motor 5 drive third runner 11 clockwise, and the second rope 12 through the tensioning drives the clockwise rotation of second runner 9 group, and second runner 9 and then drives photovoltaic board 4 clockwise rotation. In the process, the third rotating wheel 11 unreels the third rope 13, the second rotating wheel 9 unreels the third rope 13, and the third rope 13 is always in a loose state.

Fig. 23 shows the final angle of the photovoltaic panel 4 after the sun is set down, and for convenience of description, the angular position of the photovoltaic panel 4 at this time is referred to as a second position.

The first motor 5 may perform the following adjustment operation before the sun rises the next day, as may be seen in particular in fig. 24 to 27.

Fig. 24 shows the fitting relationship of the third reel 11 and the second reel 9 at the initial stage of the adjusting operation. Specifically, the first motor 5 drives the third rotating wheel 11 to rotate anticlockwise, at this time, the third rotating wheel 11 unreels the second rope 12, the third rotating wheel 11 reels the third rope 13, the second rope 12 is changed from a tensioning state to a loosening state, the looseness of the third rope 13 is gradually reduced, the second rotating wheel 9 cannot rotate along with the third rotating wheel 11, and the photovoltaic panel 4 is kept at the second position.

Referring again to fig. 25, in fig. 25, third reel 11 winds third rope 13 counterclockwise by a certain length such that third rope 13 is just under tension, while second rope 12 is under slack.

Then, referring to fig. 26 and fig. 27, the second pulley 9 continues to wind the third rope 13 counterclockwise, so that the tensioned third rope 13 drives the third pulley 11 to rotate counterclockwise, and the second pulley 9 further drives the photovoltaic panel 4 to rotate counterclockwise. In the process, the third rotating wheel 11 unreels the second rope 12, the second rotating wheel 9 unreels the second rope 12, and the second rope 12 is always in a loose state.

When the photovoltaic panel 4 is rotated to the state shown in fig. 28 and returns to the first position, the first motor 5 stops driving the third pulley 11 to rotate counterclockwise, and then drives the third pulley 11 to rotate clockwise in the opposite direction as shown in fig. 29 until the second rope 12 is in the tensioned state shown in fig. 30 and stops.

It will be appreciated that in order to avoid accidental rotation of the photovoltaic panel 4 during use, the first shaft 7 may be arranged in friction fit with the first support 1 and will only rotate relative to the first support 1 when the first shaft 7 is subjected to a sufficiently large torsional driving force.

Referring to fig. 17, in order to prevent the adjacent second ropes 12 or/and third ropes 13 on the third turning wheel 11 from interfering with each other during winding and unwinding, a total of 12 rope grooves are provided on the third turning wheel 11, and (one end of) a total of 6 second ropes 12 and 6 third ropes 13 in the six photovoltaic devices are respectively wound in the 12 rope grooves.

The above are exemplary embodiments of the present application only, and are not intended to limit the scope of the present application, which is defined by the appended claims.

Claims (10)

1. A photovoltaic device, comprising:

a first bracket;

a plurality of first rotating shafts which are arranged in parallel with each other in a first direction and each of which is connected to the first bracket so as to be rotatable about its axis;

a plurality of photovoltaic panels arranged in the first direction and fixed to the plurality of first rotating shafts in a one-to-one correspondence, respectively;

the first driving device is connected with the plurality of first rotating shafts through a first transmission assembly so as to drive the first rotating shafts to rotate around respective axes;

wherein the first transmission assembly comprises:

a plurality of first rotating wheels coaxially fixed to the plurality of first rotating shafts in a one-to-one correspondence, respectively; and

and a plurality of first ropes, wherein one first rope is respectively connected between every two adjacent first rotating wheels and between the two first rotating wheels at the extreme end, and one end of every two adjacent first ropes respectively surrounds and is fixed to the corresponding first rotating wheel in opposite directions.

2. The photovoltaic device according to claim 1, wherein in any operating state, the sum of the angles of the ends of at least two adjacent first ropes on the corresponding one of the first pulleys is less than 360 degrees.

3. The photovoltaic device according to claim 2, wherein in any operating state, the sum of the angles of the first ends of at least two adjacent first ropes on the corresponding one of the first pulleys is not greater than 180 degrees.

4. The photovoltaic device according to claim 1, wherein each of the first pulleys has a first ring groove and a second ring groove formed on an outer circumferential surface thereof and spaced apart from each other in an axial direction of the first pulley, and one end of each of two adjacent first ropes is wound around the first ring groove and the second ring groove of a corresponding one of the first pulleys, respectively.

5. The photovoltaic device of claim 4,

each first rotating wheel is provided with a first clamping groove and a second clamping groove which extend inwards along the axial direction of the first rotating wheel on a first end face of the axial direction of the first rotating wheel, the first clamping grooves and the second clamping grooves are arranged at intervals along the circumferential direction of the first rotating wheel, the groove depth of each first clamping groove extends from the outer circumferential surface of the first rotating wheel to the radial inner side of the first ring groove, so that the first clamping grooves are communicated with the first ring groove, and the groove depth of each second clamping groove extends from the outer circumferential surface of the first rotating wheel to the radial inner sides of the first ring groove and the second ring groove;

every a dop is all connected at the both ends of first rope, to arbitrary adjacent two first rope, one of them first rope one end the dop is followed first terminal surface embedding first draw-in groove, and be located the radial inboard of first annular, another first rope one end the dop is followed first terminal surface embedding second draw-in groove, and be located the radial inboard of second annular.

6. The photovoltaic device of claim 1,

each first rope comprises a first rope segment, a second rope segment and a telescopic connector for connecting the first rope segment and the second rope segment; or,

the first support is provided with a plurality of tensioning wheels, and each first rope is connected with one tensioning wheel.

7. The photovoltaic device of claim 1, wherein the first transmission assembly further comprises:

a second rotating shaft which is connected to the first bracket in a manner of rotating around the axis of the second rotating shaft, and the second rotating shaft is arranged in parallel with the first rotating shaft; and

a second runner coaxially fixed to the second shaft;

for the first rope connected between the two first pulleys at the extreme end, the first rope comprises a third rope segment and a fourth rope segment, and one end of the third rope segment and one end of the fourth rope segment respectively surround and are fixed to the second pulley in opposite directions;

the first driving device is a motor for driving the second rotating shaft to rotate.

8. The photovoltaic device of claim 1, wherein at least some adjacent two of the first cords are integrally connected.

9. A photovoltaic system, comprising a plurality of photovoltaic devices according to claim 7 or 8, wherein the first driving device in a plurality of photovoltaic devices is a same motor, and the motor is connected with a third rotating wheel to drive the third rotating wheel to rotate around a self 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 wound around and fixed to the second runner in opposite directions, and the other end of the second rope and the other end of the third rope are respectively wound around and fixed to the third runner in opposite directions.

10. The photovoltaic system of claim 9, wherein when either of the second cord and the third cord is in tension, the other is in slack.

Images