Double-shaft tracking type foldable photovoltaic device

Abstract

The utility model relates to the technical field of photovoltaic systems, in particular to a double-shaft tracking type foldable photovoltaic device, which comprises a fixed seat, a first photovoltaic tracking structure and a locking mechanism, the first photovoltaic tracking structure comprises a first driving mechanism; the second driving mechanism is driven by the first driving mechanism to rotate around the axis of the first driving mechanism; the first clutch structure comprises a first clutch piece and a second clutch piece, the first clutch piece is connected to the second driving mechanism, the first clutch mechanism has a combination state and a separation state which can be switched, the first photovoltaic assembly comprises a first photovoltaic panel and a second photovoltaic panel, the first photovoltaic panel is connected to the second clutch piece, and the second photovoltaic panel is connected to the second clutch piece. The second photovoltaic panel is connected to the first clutch piece and / or the second driving mechanism; the locking mechanism comprises a first locking piece arranged on the back face of the second photovoltaic panel, and the locking mechanism has a locking state and an unlocking state which can be switched. The photovoltaic device has the advantages that the stability of the photovoltaic device is improved, and the service life of the photovoltaic device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic technology field, concretely relates to a double -axis tracking formula foldable photovoltaic device. BACKGROUND

[0002] Solar energy as a kind of clean renewable energy has been more and more application, with the development of photovoltaic industry, photovoltaic power generation equipment is more and more various, our company is to solve the lack of installation site in photovoltaic industry, and the ability of coping with severe weather is deficient etc., design a double -axis tracking formula photovoltaic device with folding wind resistance function, and apply for the double -axis tracking formula photovoltaic support with folding wind resistance function and photovoltaic device with the application number CN2023114919152, wherein the disclosed photovoltaic device can be installed on the vertical rod (for example: the vertical column of street lamp pole or telegraph pole), can be well solve the lack of installation site and the problem of coping with severe weather etc.

[0003] The photovoltaic device in the above patent, when not needing to generate electricity at night and when the weather is severe, the photovoltaic assembly in the photovoltaic device will be folded on the side of the vertical rod, and there is usually a certain gap between the folded photovoltaic assembly and the vertical rod, so that the wind area of the folded photovoltaic assembly is reduced compared with the traditional photovoltaic device, but the connection point between the photovoltaic assembly and the vertical rod does not change, so the folded photovoltaic assembly will still have a certain shaking under the influence of the external environment, and the stability problem of the photovoltaic assembly in the folded state in the current photovoltaic device is a problem that needs to be solved urgently. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a double -axis tracking formula foldable photovoltaic device to solve the stability problem of photovoltaic assembly in the folded state in double -axis tracking folding photovoltaic device.

[0005] The utility model is implemented by the following technical solutions:

[0006] The utility model discloses a double -axis tracking formula foldable photovoltaic device, include: fixed seat, first photovoltaic tracking structure and locking mechanism,

[0007] The first photovoltaic tracking structure includes:

[0008] The first drive mechanism is arranged in the fixed seat.

[0009] The second drive mechanism is driven by the first drive mechanism and can rotate around the axis line of the first drive mechanism.

[0010] The first clutch structure comprises a first clutch member and a second clutch member, the second clutch member is connected to the second driving mechanism, the first clutch structure has switchable combined state and separated state, when the first clutch member is limited by the second clutch member, the first clutch structure is in the combined state, when the first clutch member and the second clutch member can rotate relative to the axis of the second driving mechanism, the first clutch structure is in the separated state;

[0011] The first photovoltaic assembly comprises a first photovoltaic panel and a second photovoltaic panel, the first photovoltaic panel is connected to the second clutch member, and the second photovoltaic panel is connected to the first clutch member and / or the second driving mechanism;

[0012] The locking mechanism comprises a first locking member arranged on the back of the second photovoltaic panel,

[0013] The locking mechanism has switchable locked state and unlocked state, when the locking mechanism is in the locked state, the second photovoltaic panel is limited by the locking mechanism and cannot move relative to the fixed seat, when the locking mechanism is in the unlocked state and the first clutch mechanism is in the combined state, the second photovoltaic panel can be driven by the first driving mechanism and / or the second driving mechanism to move relative to the fixed seat.

[0014] Optionally, the locking mechanism further comprises a second locking member matched with the first locking member, and the second locking member is arranged on the fixed seat;

[0015] Alternatively,

[0016] The fixed seat is further provided with a second photovoltaic tracking structure, and the second photovoltaic tracking structure comprises a third driving mechanism, the third driving mechanism is symmetrically arranged on the fixed seat with the first driving mechanism;

[0017] A fourth driving mechanism is driven by the third driving mechanism to rotate around the axis of the third driving mechanism;

[0018] The second clutch mechanism comprises a third clutch member and a fourth clutch member, the fourth clutch member is connected to the fourth driving mechanism, the second clutch mechanism has switchable combined state and separated state, when the third clutch member is limited by the fourth clutch member, the second clutch mechanism is in the combined state, when the third clutch member and the fourth clutch member can rotate relative to the axis of the fourth driving mechanism, the second clutch mechanism is in the separated state;

[0019] The second photovoltaic assembly comprises a third photovoltaic panel and a fourth photovoltaic panel, the third photovoltaic panel is connected to the fourth clutch member, and the fourth photovoltaic panel is connected to the third clutch member and / or the fourth driving mechanism;

[0020] The second locking member is arranged on the back of the fourth photovoltaic panel.

[0021] When the locking mechanism is in the locked state, the second locking member is connected with the first locking member, and when the locking mechanism is in the unlocked state, the second locking member can freely move relative to the first locking member.

[0022] Optionally, when the second locking member is arranged on the fixing base, the second locking member can be connected with at least one first locking member.

[0023] Optionally, when the second locking member is arranged on the fixing base, the second locking member is further provided with an extension rod, one end of the extension rod is fixedly connected with the fixing base, and the other end of the extension rod is fixedly connected with the second locking member.

[0024] Optionally, one of the first locking member and the second locking member is an electromagnet, and the other is a metal-attracting body matched with the electromagnet.

[0025] Optionally, the metal-attracting body is provided with a guide portion for guiding the electromagnet to match with the metal-attracting body.

[0026] Optionally, the locking mechanism is a mechanical lock, one of the first locking member and the second locking member is a lock bolt, and the other is a lock body matched with the lock bolt.

[0027] Optionally, the lock body comprises a lock tongue for limiting the lock bolt and an unlocking member for driving the lock tongue to release the lock bolt.

[0028] Optionally, the locking mechanism further comprises a connecting member for connecting the unlocking member and the lock tongue.

[0029] Optionally, the number of the locking mechanisms is at least one group, and a plurality of groups of the locking mechanisms are symmetrically distributed with the symmetry axis of the second photovoltaic panel perpendicular to the axis of the second driving mechanism as the symmetry axis.

[0030] Optionally, the back of the second photovoltaic panel is connected with a photovoltaic support, the second photovoltaic panel is connected with the first clutch through the photovoltaic support, and the first locking member is connected with the second photovoltaic panel through the photovoltaic support.

[0031] Optionally, the side edge of the second photovoltaic panel is connected with a frame, and the first locking member is connected with the second photovoltaic panel through the frame.

[0032] The photovoltaic device has the advantages that the stability of the photovoltaic device is improved, the service life of the photovoltaic device is increased, and the cost is effectively reduced.

[0033] First, the double-shaft tracking type foldable photovoltaic device enters the folding state at night or in bad weather, under the action of the first driving mechanism, the first photovoltaic assembly is turned down around the axis of the first driving mechanism until the first photovoltaic assembly is in a vertical state, at this time, the locking mechanism is in a locking state, under the action of the first locking part of the locking mechanism, the second photovoltaic panel is fixed, then the first photovoltaic panel is turned around the axis of the second driving mechanism to the second photovoltaic panel, so that the light-receiving surface of the first photovoltaic panel is opposite and superimposed with the light-receiving surface of the second photovoltaic panel, since the second photovoltaic panel is in a stationary state relative to the fixed seat under the action of the locking mechanism, the first photovoltaic panel can be stably turned without moving the second photovoltaic panel.

[0034] Meanwhile, the first photovoltaic assembly can reduce the wind area in the folding state, thereby reducing the wind resistance, and the second photovoltaic panel keeps the first photovoltaic panel assembly stationary relative to the fixed seat under the action of the locking mechanism, thereby increasing the stability of the photovoltaic device and avoiding the first photovoltaic assembly from shaking in bad weather (for example, typhoon weather), thereby increasing the service life of the photovoltaic device.

[0035] Second, when entering the folding state, the second photovoltaic assembly is also folded, and the fourth photovoltaic panel is connected to the fixed seat or the second photovoltaic panel, so that the third photovoltaic panel can be stably turned without moving the fourth photovoltaic panel under the action of the locking mechanism, and the first photovoltaic assembly, the second photovoltaic assembly and the fixed seat form a three-point support in the folding state, thereby increasing the stability of the first photovoltaic assembly and the second photovoltaic assembly connected to the fixed seat, and further increasing the service life of the photovoltaic device.

[0036] Third, since the light-receiving surface of the first photovoltaic panel is opposite and superimposed with the light-receiving surface of the second photovoltaic panel when entering the folding state, similarly, the light-receiving surface of the third photovoltaic panel is opposite and superimposed with the light-receiving surface of the fourth photovoltaic panel, so that the light-receiving surface of the photovoltaic panel cannot be polluted by sand and dust, and cannot be covered with accumulated snow, thereby avoiding the light-receiving surface from being blocked and affecting the power generation efficiency of the photovoltaic device, and avoiding the light-receiving surface of the photovoltaic panel from being damaged, and further increasing the service life of the photovoltaic device.

[0037] Fourth, the locking mechanism can adopt a traditional mechanical lock or a magnetic lock, and the lock with the highest cost performance can be selected under the condition of ensuring the purpose of the utility model, thereby reducing the cost.

[0038] Fifth, the second locking member is connected to the fixed seat by the extension rod, so that the point locked by the locking mechanism between the first photovoltaic assembly and the fixed seat is away from the axis of the second driving mechanism, the point locked by the locking mechanism between the second photovoltaic assembly and the fixed seat is away from the axis of the fourth driving mechanism, the interaction force between the first locking member and the second locking member when the second driving mechanism drives the first photovoltaic panel to rotate relative to the second photovoltaic panel and the fourth driving mechanism drives the third photovoltaic panel to rotate relative to the fourth photovoltaic panel is reduced, and the connection between the second photovoltaic assembly and the fixed seat after the second photovoltaic assembly is connected to the first photovoltaic assembly is more reliable, and the risk of damage or even destruction of the photovoltaic device is further avoided.

[0039] Sixth, the photovoltaic bracket or the frame is connected with the locking mechanism, so that the risk of damage to the second photovoltaic panel and the fourth photovoltaic panel caused by the locking mechanism is avoided, and the safety and reliability of the photovoltaic device are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0040] The following drawings describe the exemplary embodiments disclosed in the present application in detail. The same reference signs in the drawings represent similar structures in several views of the drawings. Those skilled in the art will understand that these embodiments are non-limiting, exemplary embodiments, the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of the present application, and other embodiments can also achieve the purpose of the present application. It should be understood that the drawings are not drawn to scale. Among them:

[0041] Figure 1 is a side view schematic diagram of a double-axis tracking foldable photovoltaic device in the embodiments of the present application;

[0042] Figure 2 is a top view schematic diagram of Figure 1 ;

[0043] Figure 3 is a schematic diagram of a double-axis tracking foldable photovoltaic device in the embodiments of the present application;

[0044] Figure 4 is a schematic diagram of the folded state of Figure 3 ;

[0045] Figure 5 is a schematic diagram of the first embodiment of the locking mechanism in the present application;

[0046] Figure 6 is a schematic diagram of the second embodiment of the locking mechanism in the present application;

[0047] Figure 7 is a cross-sectional schematic diagram of the second locking member in the locked state of Figure 6 ;

[0048] Figure 8 is a cross-sectional schematic diagram of the second locking member in the locked state of Figure 6Fig. 2 is a cross-sectional view of the second locking member in the unlocked state.

[0049] Fig. 1 is a schematic view of a photovoltaic support according to an embodiment of the present application.

[0050] 1, fixed seat;

[0051] 2, first photovoltaic tracking structure; 21, first driving mechanism; 22, second driving mechanism; 23, first clutching mechanism; 24, first photovoltaic assembly; 241, first photovoltaic panel; 242, second photovoltaic panel;

[0052] 3, second photovoltaic tracking structure; 31, third driving mechanism; 32, fourth driving mechanism; 33, second clutching mechanism; 34, second photovoltaic assembly; 341, third photovoltaic panel; 342, fourth photovoltaic panel;

[0053] 4, locking mechanism; 41, first locking member; 411, first connecting part; 412, locking tongue; 413, connecting member; 414, unlocking member; 42, second locking member; 421, second connecting part; 422, guiding part;

[0054] 5, photovoltaic support. DETAILED DESCRIPTION

[0055] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application. It can be understood that some technical means of the various embodiments described herein can be replaced or combined with each other without conflict.

[0056] In the description of the present application, if there are terms such as “first”, “second”, etc., they are only used to distinguish the described objects, and do not have any order or technical meaning. Therefore, the objects defined with “first”, “second”, etc. can be explicitly or implicitly included one or more of the objects. And, “one” or “an” and the like similar words do not represent a quantity limit, but represent the existence of at least one, and “multiple” represents no less than two.

[0057] In the description of this application, the terms "connection," "abutment," "installation," "fixation," "contact," "support," and "reception," etc., should be interpreted broadly. For example, "connection" can be a split connection or a one-piece connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a non-detachable connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can also refer to the internal communication of two components or the interaction between two components. As another example, "abutment" can be a direct abutment or an indirect abutment through an intermediate medium. Furthermore, "reception" does not necessarily mean complete containment of the entire component; 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 according to the specific circumstances.

[0058] In the description of this application, if there are terms such as "A is connected to B in a rotatable manner", it means that A and B are directly or indirectly connected, and A is able to rotate relative to B.

[0059] In the description of this application, references to "one embodiment" or "some embodiments" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0060] like Figures 1 to 8 As shown, this embodiment discloses a dual-axis tracking foldable photovoltaic device, including: a fixed base 1, a first photovoltaic tracking structure 2, and a locking mechanism 4;

[0061] The first photovoltaic tracking structure 2 includes: a first driving mechanism 21, disposed on the fixed base 1; a second driving mechanism 22, driven by the first driving mechanism 21 and rotatable around the axis of the first driving mechanism 21; a first clutch mechanism 23 including a first clutch component and a second clutch component, the second clutch component being connected to the second driving mechanism 22, the first clutch mechanism 23 having a switchable engaged state and a disengaged state, when the first clutch component is limited by the second clutch component, the first clutch mechanism 23 is in the engaged state, when the first clutch component and the second clutch component can rotate relative to each other around the axis of the second driving mechanism 22, the first clutch mechanism 23 is in the disengaged state; and a first photovoltaic module 24 including a first photovoltaic panel 241 and a second photovoltaic panel 242, the first photovoltaic panel 241 being connected to the second clutch component, and the second photovoltaic panel 242 being connected to the first clutch component and / or the second driving mechanism 22.

[0062] The locking mechanism 4 includes a first locking member 41 disposed on the back of the second photovoltaic panel 242. The locking mechanism 4 has a switchable locked state and an unlocked state. When the locking mechanism 4 is in the locked state, the second photovoltaic panel 242 is restricted by the locking mechanism 4 from moving relative to the fixed base 1. When the locking mechanism 4 is in the unlocked state and the first clutch mechanism 23 is in the engaged state, the second photovoltaic panel 242 can be driven by the first drive mechanism 21 and / or the second drive mechanism 22 to move relative to the fixed base 1.

[0063] It should be noted that, in this embodiment, in order to facilitate locking the first locking member 41, the locking mechanism 4 also includes a second locking member 42 that cooperates with the first locking member 41.

[0064] Furthermore, in this embodiment, the second locking member 42 is implemented as follows:

[0065] In the first embodiment, the second locking member 42 is disposed on the fixed base 1.

[0066] like Figures 1 to 4 As shown in the second embodiment, the fixed base 1 is further provided with a second photovoltaic tracking structure 3, the second photovoltaic tracking structure 3 including:

[0067] The third drive mechanism 31 is symmetrically arranged on the fixed base 1 with the first drive mechanism 21;

[0068] The fourth drive mechanism 32 is driven by the third drive mechanism 31 and can rotate around the axis of the third drive mechanism 31;

[0069] The second clutch mechanism 33 includes a third clutch element and a fourth clutch element. The fourth clutch element is connected to the fourth drive mechanism 32. The second clutch mechanism 33 has a switchable engaged state and a disengaged state. When the third clutch element is limited by the fourth clutch element, the second clutch mechanism 33 is in the engaged state. When the third clutch element and the fourth clutch element can rotate relative to each other about the axis of the fourth drive mechanism 32, the second clutch mechanism 33 is in the disengaged state.

[0070] The second photovoltaic module 34 includes a third photovoltaic panel 341 and a fourth photovoltaic panel 342. The third photovoltaic panel 341 is connected to the fourth clutch, and the fourth photovoltaic panel 342 is connected to the third clutch and / or the fourth drive mechanism 32.

[0071] When the second locking member 42 is arranged on the fixed base 1, the second locking member 42 can be connected with at least one first locking member 41, and at this time, when the second photovoltaic tracking structure 3 is arranged, the second locking member 42 can be arranged on the back of the fourth photovoltaic panel 342; or can be arranged on the fixed base 1, when the second locking member 42 is arranged on the fixed base 1, the number of the first locking members 41 is two, both of the first locking members 41 are matched with the second locking member 42, and the other first locking member 41 is arranged on the back of the fourth photovoltaic panel 342, and the second locking member 42 can be connected with the two first locking members 41.

[0072] It should be noted that when the locking mechanism 4 is in the locked state, the second locking member 42 is connected with the first locking member 41, and when the locking mechanism 4 is in the unlocked state, the second locking member 42 and the first locking member 41 can move relatively freely.

[0073] It should be noted that in the embodiment, the first driving mechanism 21, the second driving mechanism 22, the third driving mechanism 31 and the fourth driving mechanism 32 have basically the same function, which is to drive the photovoltaic panel to move in space, so that the light-receiving surface of the photovoltaic panel faces the sun, and the sunlight is perpendicular to the light-receiving surface of the photovoltaic panel as much as possible, thereby achieving the purpose of improving the power generation efficiency.

[0074] In order to realize the driving of the photovoltaic panel to move in space, the specific structure of the first driving mechanism 21, the second driving mechanism 22, the third driving mechanism 31 and the fourth driving mechanism 32 can be of various styles, for example, the first driving mechanism 21 includes a power source, and a columnar member capable of rotating around an axis driven by the power source such as a motor, which is fixedly connected to the fixed base 1 through a bearing seat or the like. Correspondingly, the second driving mechanism 22 also includes a part fixedly connected with the first driving mechanism 21, and a part (usually referred to as an output end, for the sake of simplicity, the output end will be described hereinafter) which can be driven to rotate by a power source such as a motor relative to the part fixedly connected with the first driving mechanism 21; similarly, the structure of the third driving mechanism 31 and the fourth driving mechanism 32 can also be similar to that of the first driving mechanism 21 and the second driving mechanism 22.

[0075] It should be noted that in the present embodiment, the first clutch mechanism 23 refers to a combination capable of switching between the combined state and the separated state, that is, the first clutch mechanism 23 should generally include a first clutch member fixed relative to the outside and a second clutch member capable of state switching relative to the first clutch member. In the present embodiment, the first clutch member can be the output end in the second driving mechanism 22, or can be a component independent of the output end, which can be fixedly connected with the output end. Similarly, the second clutch mechanism 33 refers to a combination capable of switching between the combined state and the separated state, that is, the second clutch mechanism 33 should generally include a third clutch member fixed relative to the outside and a fourth clutch member capable of state switching relative to the third clutch member. In the present embodiment, the third clutch member can be the output end in the fourth driving mechanism 32, or can be a component independent of the output end, which can be fixedly connected with the output end. Hereinafter, the clutch mechanisms are simply referred to as the first clutch mechanism 23 and the second clutch mechanism 33.

[0076] Further, in the present embodiment, in order to enable the clutch mechanism to switch between the combined state and the separated state, there are many specific structures and connection modes of the fixed member and the movable member of the clutch mechanism, for example, a pawl and a ratchet can be separately provided on the fixed member and the movable member. When the pawl and the ratchet are engaged, the clutch mechanism is in the combined state, and when the pawl and the ratchet are not engaged, the clutch mechanism is in the separated state. For another example, an activity pin is provided on the fixed member, and by the movement of the activity pin, the movable member is limited or released, thereby realizing the switching between the combined state and the separated state.

[0077] Therefore, those skilled in the art should be considered within the protection scope of the present application without creative labor, only by changing the specific structure of the first driving mechanism 21, the second driving mechanism 22 and the clutch mechanism, and realizing the same purpose of the present application.

[0078] It should be noted that in the present embodiment, in order to increase the stability of the first photovoltaic assembly 24 and the second photovoltaic assembly 34, and reduce the interaction force between the first locking member 41 and the second locking member 42 when the second driving mechanism 22 drives the first photovoltaic panel 241 to rotate relative to the second photovoltaic panel 242, and when the fourth driving mechanism 32 drives the third photovoltaic panel 341 to rotate relative to the fourth photovoltaic panel 342, when the second locking member 42 is arranged on the fixed seat 1, the biaxial tracking foldable photovoltaic device further comprises an extension rod, one end of the extension rod is fixedly connected to the fixed seat 1, and the second locking member 42 is fixedly connected to the other end of the extension rod.

[0079] It should be noted that, in this embodiment, the locking mechanism 4 refers to a component with switchable locked and unlocked states, such as a commonly seen U-lock or car door lock. To further describe the role of the locking mechanism 4 in this application, the locking mechanism 4 in this embodiment includes, but is not limited to, the following:

[0080] The first type, such as Figures 1 to 5 As shown, the locking mechanism 4 is an electromagnetic lock, and one of the first locking element 41 and the second lock is an electromagnet, and the other is an attractable metal body that cooperates with the electromagnet.

[0081] When the locking mechanism 4 is an electromagnetic lock, the absorbent metal body is provided with a guide part 422 for guiding the electromagnet to cooperate with the absorbent metal body. Under the action of the guide part 422, the electromagnet and the absorbent metal body can be easily aligned and cooperated. At the same time, when the locking mechanism 4 is engaged, they cannot move relative to each other, which increases the stability of the first photovoltaic module 24 and the second photovoltaic module 34.

[0082] The second type, such as Figures 6 to 8 As shown, the locking structure is a mechanical lock, and one of the first locking element 41 and the second locking element is a latch, and the other is a lock body that cooperates with the latch.

[0083] The above lock body can be implemented in multiple ways, including but not limited to the following: Figure 7 and Figure 8 As shown, the lock body includes a bolt 412 for defining the latch, and an unlocking member 414 for actuating the bolt 412 to release the latch.

[0084] Furthermore, the locking mechanism 4 also includes a connector 413 for connecting the unlocking member 414 and the locking tongue 412.

[0085] It should be noted that, in this embodiment, in order to increase the stability of the connection between the first photovoltaic module 24 and the second photovoltaic module 34, the number of locking mechanisms 4 is at least one set. At the same time, in order to make the interaction force between the first locking member 41 and the second locking member 42 more balanced when the second driving mechanism 22 drives the first photovoltaic panel 241 to rotate relative to the second photovoltaic panel 242, the multiple sets of locking mechanisms 4 are symmetrically distributed with the axis of symmetry of the second photovoltaic panel 242 perpendicular to the axis of the second driving mechanism 22 as the axis of symmetry.

[0086] It should be noted that in the present embodiment, the first photovoltaic panel 241, the second photovoltaic panel 242, the third photovoltaic panel 341 and the fourth photovoltaic panel 342 can be referred to as photovoltaic panels, the side edges of the photovoltaic panels are connected with the frames, the back surfaces of the photovoltaic panels are connected with the photovoltaic support 5 through the frames, the first photovoltaic panel 241 is connected with the second clutch member through the photovoltaic support, the second photovoltaic panel 242 is connected with the first clutch member and / or the second driving mechanism 22 through the photovoltaic support, the third photovoltaic panel 341 is connected with the fourth clutch member through the photovoltaic support, and the fourth photovoltaic panel 342 is connected with the third clutch member and / or the fourth driving mechanism 32 through the photovoltaic support.

[0087] In order to avoid the risk of damaging the second photovoltaic panel 242 and the fourth photovoltaic panel 342 due to the setting of the locking mechanism 4, the first locking member 41 is connected with the second photovoltaic panel 242 through the photovoltaic support 5 or the frame. When the second locking member 42 is connected with the second photovoltaic panel 242, the second locking member 42 is connected with the fourth photovoltaic panel 342 through the photovoltaic support 5 or the frame.

[0088] Further, in the present embodiment, the first locking member 41 can be fixedly connected with the second photovoltaic panel 242, for example, the first locking member 41 is welded on the photovoltaic support 5 of the second photovoltaic panel 242, or the first locking member 41 is detachably connected with the second photovoltaic panel 242, for example, the first locking member 41 is provided with a first connecting portion 411, the first locking member 41 is connected with the second photovoltaic panel 242 through the first connecting portion 411, and is connected with the photovoltaic support 5 of the second photovoltaic panel 242 through a pipe clamp. Similarly, the second locking member 42 can be fixedly connected with the fixed seat 1 or the fourth photovoltaic panel 342, or the second locking member 42 is provided with a second connecting portion 421, and the second locking member 42 is connected with the fixed seat 1 or the fourth photovoltaic panel 342 through the second connecting portion 421.

[0089] The present embodiment has the advantages of improving the stability of the photovoltaic device, increasing the service life of the photovoltaic device, and effectively reducing the cost.

[0090] Firstly, when the dual-axis tracking foldable photovoltaic device enters the folded state at night or in bad weather, the first photovoltaic assembly 24 is flipped downward around the axis of the first driving mechanism 21 under the action of the first driving mechanism 21 until the first photovoltaic assembly 24 is in a vertical state. At this time, the locking mechanism 4 is in a locked state, and the second photovoltaic panel 242 is fixed under the action of the first locking piece 41 of the locking mechanism 4. Subsequently, the first photovoltaic panel 241 is flipped around the axis of the second driving mechanism 22 to the second photovoltaic panel 242, so that the light-receiving surface of the first photovoltaic panel 241 is opposite and superimposed with the light-receiving surface of the second photovoltaic panel 242. Since the second photovoltaic panel 242 is in a stationary state relative to the fixed base 1 under the action of the locking mechanism 4, the first photovoltaic panel 241 can be stably flipped without causing the second photovoltaic panel 242 to shake.

[0091] At the same time, the first photovoltaic assembly 24 in the folded state can reduce the wind area and thus reduce the wind resistance. The second photovoltaic panel 242 keeps the first photovoltaic panel 241 assembly stationary relative to the fixed base 1 under the action of the locking mechanism 4, thereby increasing the stability of the photovoltaic device and avoiding the first photovoltaic assembly 24 from shaking in bad weather (e.g., typhoon weather), thereby increasing the service life of the photovoltaic device.

[0092] Secondly, when entering the folded state, the second photovoltaic assembly 34 is also folded. The fourth photovoltaic panel 342 is connected to the fixed base 1 or the second photovoltaic panel 242. Therefore, the third photovoltaic panel 341 can be stably flipped without causing the fourth photovoltaic panel 342 to shake under the action of the locking mechanism 4. In the folded state, the first photovoltaic assembly 24, the second photovoltaic assembly 34, and the fixed base 1 form a three-point support, thereby increasing the stability of the first photovoltaic assembly 24 and the second photovoltaic assembly 34 connected to the fixed base 1, and further increasing the service life of the photovoltaic device.

[0093] Thirdly, when entering the folded state, the light-receiving surface of the first photovoltaic panel 241 is opposite and superimposed with the light-receiving surface of the second photovoltaic panel 242, and similarly, the light-receiving surface of the third photovoltaic panel 341 is opposite and superimposed with the light-receiving surface of the fourth photovoltaic panel 342. Therefore, it can be ensured that the light-receiving surface of the photovoltaic panel will not be polluted by sand and dust, will not accumulate snow, will not be blocked, will not affect the power generation efficiency of the photovoltaic device, and will not damage the light-receiving surface of the photovoltaic panel, thereby further increasing the service life of the photovoltaic device.

[0094] Fourthly, the locking mechanism 4 proposed in the present embodiment can use traditional mechanical locks or magnetic locks. In the case of ensuring the purpose of the present embodiment, the lock with the highest cost performance can be preferred, thereby reducing the cost.

[0095] Fifth, by using the extension rod, the second locking member 42 is connected to the fixed seat 1, that is, the point between the first photovoltaic assembly 24 and the fixed seat 1 locked by the locking mechanism 4 is away from the axis of the second driving mechanism 22, the point between the second photovoltaic assembly 34 and the fixed seat 1 locked by the locking mechanism 4 is away from the axis of the fourth driving mechanism 32, which reduces the interaction force between the first locking member 41 and the second locking member 42 when the second driving mechanism 22 drives the first photovoltaic panel 241 to rotate relative to the second photovoltaic panel 242, and the fourth driving mechanism 32 drives the third photovoltaic panel 341 to rotate relative to the fourth photovoltaic panel 342, and further ensures that the connection between the second photovoltaic assembly 34 and the first photovoltaic assembly and the fixed seat 1 is more reliable after being connected, and further avoids the risk of damage or even destruction of the photovoltaic device.

[0096] Sixth, by using the photovoltaic bracket 5 or the frame to connect with the locking mechanism 4, the risk of damage to the second photovoltaic panel 242 and the fourth photovoltaic panel 342 caused by the locking mechanism 4 is avoided, and the safety and reliability of the photovoltaic device are further improved.

Claims

1. A dual axis tracking foldable photovoltaic device, characterized by, The fixed seat, the first photovoltaic tracking structure and the locking mechanism are included. The first photovoltaic tracking structure includes: The first driving mechanism is arranged on the fixed seat; The second driving mechanism is driven by the first driving mechanism and can rotate around the axis of the first driving mechanism; The first clutching mechanism includes the first clutching part and the second clutching part, the second clutching part is connected to the second driving mechanism, the first clutching mechanism has switchable combined state and separated state, when the first clutching part is limited by the second clutching part, the first clutching mechanism is in the combined state, when the first clutching part and the second clutching part can rotate relatively around the axis of the second driving mechanism, the first clutching mechanism is in the separated state; The first photovoltaic assembly includes the first photovoltaic panel and the second photovoltaic panel, the first photovoltaic panel is connected to the second clutching part, the second photovoltaic panel is connected to the first clutching part and / or the second driving mechanism; The locking mechanism includes the first locking part arranged on the back of the second photovoltaic panel, The locking mechanism has switchable locked state and unlocked state, when the locking mechanism is in the locked state, the second photovoltaic panel is limited by the locking mechanism and cannot move relative to the fixed seat, when the locking mechanism is in the unlocked state and the first clutching mechanism is in the combined state, the second photovoltaic panel can be driven by the first driving mechanism and / or the second driving mechanism to move relative to the fixed seat.

2. The dual-axis tracking foldable photovoltaic device of claim 1, wherein, The locking mechanism further includes the second locking part matched with the first locking part, the second locking part is arranged on the fixed seat; Or, The fixed seat is further provided with the second photovoltaic tracking structure, the second photovoltaic tracking structure includes: the third driving mechanism, the third driving mechanism is symmetrically arranged on the fixed seat with the first driving mechanism; The fourth driving mechanism is driven by the third driving mechanism and can rotate around the axis of the third driving mechanism; The second clutching mechanism includes the third clutching part and the fourth clutching part, the fourth clutching part is connected to the fourth driving mechanism, the second clutching mechanism has switchable combined state and separated state, when the third clutching part is limited by the fourth clutching part, the second clutching mechanism is in the combined state, when the third clutching part and the fourth clutching part can rotate relatively around the axis of the fourth driving mechanism, the second clutching mechanism is in the separated state; The second photovoltaic assembly includes the third photovoltaic panel and the fourth photovoltaic panel, the third photovoltaic panel is connected to the fourth clutching part, the fourth photovoltaic panel is connected to the third clutching part and / or the fourth driving mechanism; The second locking part is arranged on the back of the fourth photovoltaic panel; When the locking mechanism is in the locked state, the second locking part is connected with the first locking part, when the locking mechanism is in the unlocked state, the second locking part can move freely relative to the first locking part.

3. The dual-axis tracking foldable photovoltaic device of claim 2, wherein, When the second locking part is arranged on the fixed seat, the second locking part can be connected to at least one first locking part.

4. The dual-axis tracking foldable photovoltaic device of claim 2, wherein, When the second locking member is arranged on the fixing base, a protruding rod is further arranged, one end of the protruding rod is fixedly connected to the fixing base, and the second locking member is fixedly connected to the other end of the protruding rod.

5. The dual-axis tracking foldable photovoltaic device of claim 2, wherein, The locking mechanism is an electromagnetic lock, one of the first locking member and the second locking member is an electromagnet, and the other is a metal-absorbing body matched with the electromagnet.

6. The dual-axis tracking foldable photovoltaic device of claim 5, wherein, The metal-absorbing body is provided with a guide part for guiding the electromagnet to match with the metal-absorbing body.

7. The dual-axis tracking foldable photovoltaic device of claim 2, wherein, The locking mechanism is a mechanical lock, one of the first locking member and the second locking member is a latch, and the other is a lock body matched with the latch.

8. The dual-axis tracking foldable photovoltaic device of claim 7, wherein, The lock body comprises a lock tongue for defining the latch, and an unlocking member for driving the lock tongue to release the latch.

9. The dual-axis tracking foldable photovoltaic device of claim 8, wherein, The locking mechanism further comprises a connecting member for connecting the unlocking member and the lock tongue.

10. The dual-axis tracking foldable photovoltaic device of any of claims 1-9, wherein, The number of the locking mechanisms is at least one set, and multiple sets of the locking mechanisms are symmetrically distributed with the symmetry axis of the second photovoltaic panel being the symmetry axis perpendicular to the axis of the second driving mechanism.

11. The dual-axis tracking foldable photovoltaic device of any of claims 1-9, wherein, The back of the second photovoltaic panel is connected with a photovoltaic support, the second photovoltaic panel is connected to the first clutch through the photovoltaic support, and the first locking member is connected to the second photovoltaic panel through the photovoltaic support.

12. The dual-axis tracking foldable photovoltaic device of any of claims 1-9, wherein, The side of the second photovoltaic panel is connected with a frame, and the first locking member is connected to the second photovoltaic panel through the frame.

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