Zhuri photovoltaic bracket and photovoltaic system

Abstract

The present invention relates to the field of photovoltaic power generation technology, and specifically discloses a daily photovoltaic bracket and a photovoltaic system. The daily photovoltaic bracket of the present invention comprises a first bracket that is fixedly arranged, a middle axis portion is arranged on the first bracket, a second bracket is arranged on the middle axis portion, a photovoltaic assembly is fixedly arranged on the outer side of the second bracket, a first ratchet mechanism and a second ratchet mechanism are arranged in the second bracket along its own length direction, a first clutch mechanism is arranged between the first ratchet mechanism and the second bracket, a second clutch mechanism is arranged between the second ratchet mechanism and the second bracket, a controller is arranged on the second bracket, and the first clutch mechanism and the second clutch mechanism are respectively connected to the controller. The daily photovoltaic bracket of the present invention has a simple structure and low energy consumption cost, can realize unmanned adjustment operation, and improves the convenience of operation.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a solar photovoltaic bracket and a photovoltaic system. Background Art

[0002] Photovoltaic power generation technology is a technology that directly converts light energy into electrical energy by using the photovoltaic effect of semiconductors. Compared with traditional energy sources, solar energy is inexhaustible, and has the advantages of sufficient cleanliness, absolute safety, and sufficient resources. It is of absolute importance in long-term energy strategies. Among them, the general device that converts light energy into electrical energy is called a photovoltaic module, and the power generation efficiency of a photovoltaic module is related to the incident angle of sunlight. The power generation efficiency is highest within a specific incident angle range, and the further away from the incident angle, the lower the power generation efficiency.

[0003] However, the photovoltaic brackets currently used to install photovoltaic modules are generally fixed at a fixed angle, usually facing south to obtain the power generation angle when the light intensity is the strongest, but the light when the sun rises in the east and sets in the west cannot be effectively utilized. The existing technology also has photovoltaic brackets that can track the trajectory of the sun, but generally they directly use motors to gradually drive the photovoltaic brackets to rotate, which has a complex structure and high electricity costs, which is not worth the cost; there are also examples of using manpower to intermittently drive the deflection of photovoltaic brackets, but the operation frequency depends on the time for manual on-site debugging, which is inconvenient to operate. Summary of the invention

[0004] One purpose of an embodiment of the present invention is to provide a solar photovoltaic bracket, which has a simple structure and low energy consumption cost, can realize unmanned adjustment operation, and improves operational convenience.

[0005] Another object of an embodiment of the present invention is to provide a photovoltaic system that does not rely on manual debugging operations to intermittently drive the deflection of the photovoltaic support, is easy to operate, and has low construction costs.

[0006] To achieve this purpose, the embodiment of the present invention adopts the following technical solutions:

[0007] In the first aspect, a daily photovoltaic bracket is provided, including a first fixed bracket, a middle axis portion is provided on the first bracket, a second bracket is provided on the middle axis portion, a photovoltaic component is fixedly provided on the outer side of the second bracket, the second bracket can rotate around the central axis of the middle axis portion, a first ratchet mechanism and a second ratchet mechanism are provided in the second bracket along its own length direction, the first ratchet mechanism and the second ratchet mechanism can both rotate relative to the second bracket, the first ratchet mechanism can rotate around the central axis of the middle axis portion in a first direction, the second ratchet mechanism can rotate around the central axis of the middle axis portion in a second direction, the first direction and the second direction are opposite, a first clutch mechanism is provided between the first ratchet mechanism and the second bracket, a second clutch mechanism is provided between the second ratchet mechanism and the second bracket, a controller is provided on the second bracket, the first clutch mechanism and the second clutch mechanism are respectively connected to the controller, the first clutch mechanism is used to limit the rotation of the first ratchet mechanism and the second bracket, and the second clutch mechanism is used to limit the rotation of the second ratchet mechanism and the second bracket.

[0008] As a preferred solution of the solar photovoltaic bracket, the first ratchet mechanism includes a first ratchet movably arranged on the middle axis part, and a first pawl fixedly arranged on the middle axis part, and the first pawl can make the first ratchet rotate unidirectionally, and the second ratchet mechanism includes a second ratchet movably arranged on the middle axis part, and a second pawl fixedly arranged on the middle axis part, and the second pawl can make the second ratchet rotate unidirectionally.

[0009] As a preferred solution of the solar photovoltaic bracket, a first driving part is arranged between the first pawl and the middle axis part, and a second driving part is arranged between the second pawl and the middle axis part. The first driving part and the second driving part are communicatively connected with the controller. The first driving part is used to drive the first pawl to approach or move away from the first ratchet wheel, and the second driving part is used to drive the second pawl to approach or move away from the second ratchet wheel.

[0010] As a preferred solution of the solar photovoltaic bracket, the first clutch mechanism includes a first clutch seat arranged on the first ratchet, a third driving part is arranged on the second bracket facing the first clutch seat, the second clutch mechanism includes a second clutch seat arranged on the second ratchet, a fourth driving part is arranged on the second bracket facing the second clutch seat, the third driving part and the fourth driving part are communicatively connected with the controller, a first clutch block is arranged on the third driving part, and a second clutch block is arranged on the fourth driving part, the third driving part can drive the first clutch block close to or away from the first clutch seat, and the fourth driving part can drive the second clutch block close to or away from the second clutch seat.

[0011] As a preferred solution of the solar photovoltaic bracket, a first protrusion is arranged on the first clutch seat, a first recessed portion corresponding to the shape of the first protrusion is arranged on the first clutch block, and the first protrusion is protrudingly arranged in the groove of the first recessed portion, a second protrusion is arranged on the second clutch seat, and a second recessed portion corresponding to the shape of the second protrusion is arranged on the second clutch block, and the second protrusion is protrudingly arranged in the groove of the second recessed portion.

[0012] As a preferred solution of the solar photovoltaic bracket, a limit block is arranged between the second bracket and the first bracket, and the limit block is used to limit the rotation angle and axial displacement of the second bracket relative to the first bracket.

[0013] As a preferred solution of the solar photovoltaic bracket, a first bearing is provided between the first ratchet mechanism and the second bracket, and a second bearing is provided between the second ratchet mechanism and the second bracket.

[0014] As a preferred solution of the sun-chasing photovoltaic bracket, the axial direction of the central axis forms an acute angle with the horizon.

[0015] As a preferred solution of the solar photovoltaic bracket, an angle sensor is provided between the second bracket and the central axis, and the angle sensor is communicatively connected with the controller.

[0016] In a second aspect, a photovoltaic system is provided, including a photovoltaic component and the sun-chasing photovoltaic bracket, wherein the photovoltaic component is arranged on a second bracket of the sun-chasing photovoltaic bracket.

[0017] The beneficial effects of the embodiments of the present invention are:

[0018] The first bracket is fixedly arranged, a central axis portion is arranged on the first bracket, a second bracket is arranged on the central axis portion, a photovoltaic assembly is fixedly arranged on the outer side of the second bracket, and the second bracket can rotate around the central axis of the central axis portion, so that the photovoltaic assembly can rotate relative to the first bracket. The second bracket is provided with a first ratchet mechanism and a second ratchet mechanism along its own length direction, and both the first ratchet mechanism and the second ratchet mechanism can rotate relative to the second bracket, the first ratchet mechanism can rotate around the central axis of the central axis portion in a first direction, and the second ratchet mechanism can rotate around the central axis of the central axis portion in a second direction, and the first direction and the second direction are opposite. In addition, a first clutch mechanism is arranged between the first ratchet mechanism and the second bracket, a second clutch mechanism is arranged between the second ratchet mechanism and the second bracket, a controller is arranged on the second bracket, the first clutch mechanism and the second clutch mechanism are respectively connected to the controller, the first clutch mechanism is used to limit the rotation of the first ratchet mechanism and the second bracket, and the second clutch mechanism is used to limit the rotation of the second ratchet mechanism and the second bracket. When the photovoltaic assembly is exposed to wind, the first clutch mechanism can be driven to limit the rotation of the first ratchet mechanism and the second bracket, so that the photovoltaic assembly can only rotate relative to the first bracket in the first direction through the first ratchet mechanism; or, the second clutch mechanism can be driven to limit the rotation of the second ratchet mechanism and the second bracket, so that the photovoltaic assembly can only rotate relative to the first bracket in the second direction through the second ratchet mechanism; or, when both the first clutch mechanism and the second clutch mechanism are actuated and the first ratchet mechanism and the second ratchet mechanism are both restricted from rotating, the photovoltaic assembly stops rotating relative to the first bracket. In the embodiment of the present invention, the end of the central axis of the sun-chasing photovoltaic bracket can be arranged to face the north-south direction, so that the photovoltaic assembly can be driven by wind energy to rotate unidirectionally from east to west, or unidirectionally from west to east, thereby achieving a simple structure and low energy consumption cost, and does not rely on manual debugging operations to intermittently drive the photovoltaic bracket to deflect, and can achieve unmanned adjustment operation, thereby improving operational convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0020] Figure 1 A schematic diagram of the cross-sectional structure of a solar photovoltaic bracket provided in accordance with an embodiment of the present invention.

[0021] Figure 2 A schematic diagram of the partial structure of a solar photovoltaic bracket provided in another embodiment of the present invention.

[0022] Figure 3 A schematic diagram of the partial structure of a solar photovoltaic bracket provided in yet another embodiment of the present invention.

[0023] Figure 4 A schematic structural diagram of a photovoltaic system provided in yet another embodiment of the present invention.

[0024] In the figure:

[0025] 1. Zhuri photovoltaic bracket; 11. First bracket; 111. Central axis; 12. Second bracket; 121. First ratchet mechanism; 1211. First ratchet; 1212. First pawl; 1213. First driving unit; 122. Second ratchet mechanism; 1221. Second ratchet; 1222. Second pawl; 1223. Second driving unit; 13. First clutch mechanism; 131. First clutch seat; 1311. First protrusion; 132. Third driving unit; 133. First clutch block; 1331. First recess; 14. Second clutch mechanism; 141. Second clutch seat; 1411. Second protrusion; 142. Fourth driving unit; 143. Second clutch block; 1431. Second recess; 15. Controller; 16. Limit block; 17. First bearing; 18. Second bearing; 19. Angle sensor; 2. Photovoltaic module. DETAILED DESCRIPTION

[0026] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] refer to Figure 1The embodiment of the present invention provides a solar photovoltaic bracket 1, comprising a first bracket 11 which is fixedly arranged, a middle axis 111 is arranged on the first bracket 11, a second bracket 12 is arranged on the middle axis 111, a photovoltaic assembly 2 is fixedly arranged on the outer side of the second bracket 12, the second bracket 12 can rotate around the central axis of the middle axis 111, a first ratchet mechanism 121 and a second ratchet mechanism 122 are arranged in the second bracket 12 along its own length direction, the first ratchet mechanism 121 and the second ratchet mechanism 122 can both rotate relative to the second bracket 12, and the first ratchet mechanism 121 can rotate around the central axis of the middle axis 111 in a first direction The second ratchet mechanism 122 can rotate in a second direction around the central axis of the middle shaft portion 111, the first direction and the second direction are opposite, a first clutch mechanism 13 is arranged between the first ratchet mechanism 121 and the second bracket 12, a second clutch mechanism 14 is arranged between the second ratchet mechanism 122 and the second bracket 12, a controller 15 is arranged on the second bracket 12, the first clutch mechanism 13 and the second clutch mechanism 14 are respectively connected to the controller 15, the first clutch mechanism 13 is used to limit the rotation of the first ratchet mechanism 121 and the second bracket 12, and the second clutch mechanism 14 is used to limit the rotation of the second ratchet mechanism 122 and the second bracket 12.

[0030] In the embodiment of the present invention, a first bracket 11 is fixedly arranged, a central axis portion 111 is arranged on the first bracket 11, a second bracket 12 is arranged on the central axis portion 111, a photovoltaic assembly 2 is fixedly arranged on the outer side of the second bracket 12, and the second bracket 12 can rotate around the central axis of the central axis portion 111, so that the photovoltaic assembly 2 can rotate relative to the first bracket 11. A first ratchet mechanism 121 and a second ratchet mechanism 122 are arranged inside the second bracket 12 along its own length direction, and both the first ratchet mechanism 121 and the second ratchet mechanism 122 can rotate relative to the second bracket 12, the first ratchet mechanism 121 can rotate around the central axis of the central axis portion 111 in a first direction, and the second ratchet mechanism 122 can rotate around the central axis of the central axis portion 111 in a second direction, and the first direction and the second direction are opposite. In addition, a first clutch mechanism 13 is arranged between the first ratchet mechanism 121 and the second bracket 12, a second clutch mechanism 14 is arranged between the second ratchet mechanism 122 and the second bracket 12, a controller 15 is arranged on the second bracket 12, the first clutch mechanism 13 and the second clutch mechanism 14 are respectively connected to the controller 15, the first clutch mechanism 13 is used to limit the rotation of the first ratchet mechanism 121 and the second bracket 12, and the second clutch mechanism 14 is used to limit the rotation of the second ratchet mechanism 122 and the second bracket 12. When the photovoltaic assembly 2 is exposed to wind, the first clutch mechanism 13 can be driven to limit the rotation of the first ratchet mechanism 121 and the second bracket 12, so that the photovoltaic assembly 2 can only rotate relative to the first bracket 11 in the first direction through the first ratchet mechanism 121; or, the second clutch mechanism 14 can limit the rotation of the second ratchet mechanism 122 and the second bracket 12, so that the photovoltaic assembly 2 can only rotate relative to the first bracket 11 in the second direction through the second ratchet mechanism 122; or, when both the first clutch mechanism 13 and the second clutch mechanism 14 are in action and the first ratchet mechanism 121 and the second ratchet mechanism 122 are both restricted from rotating, the photovoltaic assembly 2 stops rotating relative to the first bracket 11. In the embodiment of the present invention, the end of the central axis 111 of the sun-chasing photovoltaic bracket 1 can be arranged to face the north-south direction, so that the photovoltaic assembly 2 can be driven by wind energy to rotate unidirectionally from east to west, or unidirectionally from west to east, thereby achieving a simple structure and low energy consumption cost, and does not rely on manual debugging operations to intermittently drive the photovoltaic bracket to deflect, and can achieve unmanned adjustment operation, thereby improving operational convenience.

[0031] The first bracket 11 of this embodiment can be fixedly installed on the ground, or on a wall or water surface. Different attachment carriers are equipped with corresponding fixing structures. The actual configuration depends on construction requirements and is not specifically limited in this embodiment.

[0032] Further, continue to refer to Figure 1The first ratchet mechanism 121 of the embodiment of the present invention includes a first ratchet 1211 movably disposed on the middle shaft portion 111, and a first pawl 1212 fixedly disposed on the middle shaft portion 111, the first pawl 1212 can make the first ratchet 1211 rotate unidirectionally, and the second ratchet mechanism 122 includes a second ratchet 1221 movably disposed on the middle shaft portion 111, and a second pawl 1222 fixedly disposed on the middle shaft portion 111, the second pawl 1222 can make the second ratchet 1221 rotate unidirectionally. This embodiment achieves the effect of unidirectionally rotating the first ratchet 1211 relative to the middle shaft portion 111, or unidirectionally rotating the second ratchet 1221 relative to the middle shaft portion 111, respectively, by matching the first ratchet 1211 and the first pawl 1212, and the second ratchet 1221 and the second pawl 1222.

[0033] Further, continue to refer to Figure 1 A first driving portion 1213 is provided between the first pawl 1212 and the middle axis portion 111, and a second driving portion 1223 is provided between the second pawl 1222 and the middle axis portion 111. The first driving portion 1213 and the second driving portion 1223 are communicatively connected with the controller 15. The first driving portion 1213 is used to drive the first pawl 1212 to approach or move away from the first ratchet 1211, and the second driving portion 1223 is used to drive the second pawl 1222 to approach or move away from the second ratchet 1221. This embodiment can control the position relationship of the first pawl 1212 relative to the first ratchet 1211 and the position relationship of the second pawl 1222 relative to the second ratchet 1221 by controlling the actions of the first driving part 1213 and the second driving part 1223, thereby controlling the unidirectional rotation or bidirectional rotation of the first ratchet 1211 and the unidirectional rotation or bidirectional rotation of the second ratchet 1221 respectively. When the first ratchet 1211 rotates bidirectionally and the second ratchet 1221 rotates bidirectionally, the deflection angle of the second bracket 12 relative to the first bracket 11 can be reset.

[0034] In particular, refer to Figure 1 and Figure 2 In the first ratchet mechanism 121, a tooth cavity is recessed on a side surface of the first ratchet 1211 close to the middle axis 111, and teeth corresponding to the first pawl 1212 are arranged on the tooth cavity, so that the first pawl 1212 on the middle axis 111 can directly contact the teeth of the first ratchet 1211, thereby saving the space occupied by the first ratchet mechanism 121. Similarly, the second ratchet mechanism 122 can be provided with a similar structure to achieve the same effect of saving the space occupied, which will not be described in detail in this embodiment.

[0035] In another embodiment, the first clutch mechanism 13 includes a first clutch seat 131 arranged on the first ratchet 1211, a third driving part 132 is arranged on the second bracket 12 facing the first clutch seat 131, the second clutch mechanism 14 includes a second clutch seat 141 arranged on the second ratchet 1221, a fourth driving part 142 is arranged on the second bracket 12 facing the second clutch seat 141, the third driving part 132 and the fourth driving part 142 are communicatively connected with the controller 15, a first clutch block 133 is arranged on the third driving part 132, and a second clutch block 143 is arranged on the fourth driving part 142. The third driving part 132 can drive the first clutch block 133 to approach or move away from the first clutch seat 131, and the fourth driving part 142 can drive the second clutch block 143 to approach or move away from the second clutch seat 141. In this embodiment, the distance between the first clutch block 133 and the first clutch seat 131 is adjusted by the third driving part 132. When the first clutch block 133 is close to the first clutch seat 131 and the second clutch block 143 is far away from the second clutch seat 141, the first ratchet 1211 where the first clutch block 133 is located is relatively fixed to the second bracket 12 where the first clutch seat 131 is located, so that the first ratchet mechanism 121 can limit the second bracket 12 from rotating in the first direction relative to the first bracket 11. Similarly, when the first clutch block 133 is far away from the first clutch seat 131 and the second clutch block 143 is close to the second clutch seat 141, the second ratchet 1221 where the second clutch block 143 is located is relatively fixed to the second bracket 12 where the second clutch seat 141 is located, so that the second ratchet mechanism 122 can limit the second bracket 12 from rotating in the second direction relative to the first bracket 11. When the first clutch block 133 is away from the first clutch seat 131 and the second clutch block 143 is away from the second clutch seat 141, the second bracket 12 can rotate in both directions relative to the first bracket 11. On the contrary, when the first clutch block 133 is close to the first clutch seat 131 and the second clutch block 143 is close to the second clutch seat 141, the second bracket 12 is relatively fixed to the first bracket 11. Therefore, when the operation and maintenance personnel are present, the relative rotation angle of the second bracket 12 and the first bracket 11 can be adjusted by adjusting the relative activity relationship between the first bracket 11 and the second bracket 12, for example, the initial orientation position of the photovoltaic module 2 can be set to face the sun directly.

[0036] Preferably, the first drive unit 1213, the second drive unit 1223, the third drive unit 132 or the fourth drive unit 142 of the embodiment of the present invention can be a connection between a drive motor and a hydraulic transmission rod, or a connection between a drive motor and a spiral transmission rod, which is not specifically limited in this embodiment.

[0037] The first clutch seat 131 and the first clutch block 133 may have various matching connection relationships, for example, a rubber layer may be provided between the first clutch seat 131 and the first clutch block 133, and the second clutch seat 141 and the second clutch block 143 may also have the same matching connection relationship. Figure 1 The first clutch seat 131 is provided with a first protruding portion 1311, the first clutch block 133 is provided with a first recessed portion 1331 corresponding to the shape of the first protruding portion 1311, the first protruding portion 1311 is protrudingly arranged in the groove of the first recessed portion 1331, the second clutch seat 141 is provided with a second protruding portion 1411, the second clutch block 143 is provided with a second recessed portion 1431 corresponding to the shape of the second protruding portion 1411, the second protruding portion 1411 is protrudingly arranged in the groove of the second recessed portion 1431. In this embodiment, by providing the first protruding portion 1311 and the first recessed portion 1331, the contact area between the first clutch seat 131 and the first clutch block 133 can be increased, thereby increasing the clutch effect of the first clutch mechanism 13. Similarly, the second clutch mechanism 14 can also be provided with a second protruding portion 1411 and a second recessed portion 1431 to achieve the same effect.

[0038] In another embodiment, reference Figure 3 A limiting block 16 is provided between the second bracket 12 and the first bracket 11. The limiting block 16 can be provided on the first bracket 11 and the second bracket 12. The limiting block 16 of this embodiment is used to limit the rotation angle and axial displacement of the second bracket 12 relative to the first bracket 11. For example, limiting blocks 16 are provided on the two end surfaces of the central axis 111 close to the second bracket 12, which can limit the axial displacement of the second bracket 12 relative to the first bracket 11, and another limiting block 16 is provided on the end surface of the second bracket 12. The limiting block 16 on the central axis 111 and the limiting block 16 on the second bracket 12 are used to limit the rotation angle of the second bracket 12 around the central axis of the central axis 111. Other specific setting positions and setting quantities are determined according to actual needs, and are not specifically limited in this embodiment.

[0039] In addition, refer to Figure 1 , a first bearing 17 is provided between the first ratchet mechanism 121 and the second bracket 12, and a second bearing 18 is provided between the second ratchet mechanism 122 and the second bracket 12. By utilizing the characteristics of the bearing that can fix the two components directly connected thereto and can reduce the load friction coefficient, the first ratchet mechanism 121 can achieve smoother bidirectional rotation with the second bracket 12 through the first bearing 17, and the relative position of the first ratchet mechanism 121 and the second bracket 12 in the axial direction can also be fixed through the first bearing 17. Similarly, the second bearing 18 provided between the second ratchet mechanism 122 and the second bracket 12 can achieve the same effect, and will not be described in detail in this embodiment.

[0040] Preferably, the first bearing 17 or the second bearing 18 of the embodiment of the present invention can be a deep groove ball bearing, which mainly bears radial loads, and can also bear radial loads and axial loads at the same time. When it only bears radial loads, the contact angle is zero. When the deep groove ball bearing has a large radial clearance, it has the performance of an angular contact bearing and can bear a large axial load. The friction coefficient of the deep groove ball bearing is small and the limit speed is also high. It can ensure the smooth rotation of the first ratchet mechanism 121 and the second bracket 12, or the smooth rotation of the second ratchet mechanism 122 and the second bracket 12, and can also improve the structural strength and connection strength of the first ratchet mechanism 121 and the second bracket 12, or the structural strength and connection strength of the second ratchet mechanism 122 and the second bracket 12.

[0041] Sunlight is direct light. At different times of the year, the angle of incidence of sunlight relative to the earth's surface is different. For example, at the winter solstice, the angle of incidence of sunlight relative to the earth's surface (hereinafter referred to as the surface incident angle) is the smallest, and the surface incident angle at this time is an acute angle, while at noon on the summer solstice, the surface incident angle is a right angle. In addition, the power generation efficiency of the photovoltaic module 2 is negatively correlated with the angle of incidence of sunlight on the surface of the photovoltaic module 2 (the angle between sunlight and the normal of the surface of the photovoltaic module 2, hereinafter referred to as the photovoltaic incident angle). The larger the photovoltaic incident angle of sunlight on the surface of the photovoltaic module 2, the less normal solar radiation received by the photovoltaic module 2, which reduces the power generation efficiency of the photovoltaic module 2 and even makes it lower than the starting radiation and stops generating electricity. In one embodiment, reference Figure 4 The axial direction of the central axis 111 is set to form an acute angle with the horizon, which can ensure that the photovoltaic module 2 is within the range of the photovoltaic incident angle throughout the year, and can ensure the normal operation of the photovoltaic module 2. In addition, in rainy and snowy weather, rainwater and snow on the photovoltaic module 2 can slide down along the inclined surface, reducing the pressure on the photovoltaic module 2, increasing the service life of the photovoltaic module 2, and further improving the power generation effect of the photovoltaic module 2.

[0042] The photovoltaic assembly 2 has an optimal inclination angle in different longitude and latitude regions (that is, the acute angle between the axial direction of the shaft 111 and the horizon in this embodiment), and the corresponding optimal inclination angle can be set according to different longitude and latitude regions, which is not specifically limited in this embodiment.

[0043] In particular, refer to Figure 3An angle sensor 19 is provided between the second bracket 12 and the central axis 111, and the angle sensor 19 is in communication connection with the controller 15. The angle sensor 19 is used to detect the relative angle of the second bracket 12 relative to the first bracket 11, and the controller 15 controls the actions of the first clutch mechanism 13 and the second clutch mechanism 14 as well as the first ratchet mechanism 121 and the second ratchet mechanism 122 according to the detected relative angle. For example, the photovoltaic assembly 2 is set to rotate from east to west at a specified angle every hour, and the actions of the first clutch mechanism 13 and the second clutch mechanism 14 as well as the first ratchet mechanism 121 and the second ratchet mechanism 122 are controlled to limit the unidirectional rotation of the second bracket 12 from east to west relative to the first bracket 11, and when the specified angle is exceeded, the rotation of the second bracket 12 on the first bracket 11 is limited and fixed, so that the deflection angle of the daily photovoltaic bracket 1 of the embodiment of the present invention is more accurate.

[0044] refer to Figure 4 The embodiment of the present invention further provides a photovoltaic system, including a photovoltaic module 2 and a solar photovoltaic bracket 1 of any of the above embodiments, wherein the photovoltaic module 2 is arranged on a second bracket 12 of the solar photovoltaic bracket 1. The solar photovoltaic bracket 1 in this embodiment can have the same structure and achieve the same effect as the solar photovoltaic bracket 1 in the above embodiments, and will not be described in detail in this embodiment.

[0045] In the description of this article, it should be understood that the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used to distinguish in the description and have no special meaning.

[0046] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0047] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0048] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A solar photovoltaic bracket, characterized in that: The invention comprises a first fixed bracket, a middle axis portion is arranged on the first bracket, a second bracket is arranged on the middle axis portion, a photovoltaic assembly is fixedly arranged on the outer side of the second bracket, the second bracket can rotate around the central axis of the middle axis portion, a first ratchet mechanism and a second ratchet mechanism are arranged in the second bracket along its length direction, the first ratchet mechanism and the second ratchet mechanism can both rotate relative to the second bracket, the first ratchet mechanism can rotate around the central axis of the middle axis portion in a first direction, the second ratchet mechanism can rotate around the central axis of the middle axis portion in a second direction, the first direction and the second direction are opposite, a first clutch mechanism is arranged between the first ratchet mechanism and the second bracket, a second clutch mechanism is arranged between the second ratchet mechanism and the second bracket, a controller is arranged on the second bracket, the first clutch mechanism and the second clutch mechanism are respectively connected to the controller, the first clutch mechanism is used to limit the rotation of the first ratchet mechanism and the second bracket, and the second clutch mechanism is used to limit the rotation of the second ratchet mechanism and the second bracket; A first bearing is provided between the first ratchet mechanism and the second bracket, and a second bearing is provided between the second ratchet mechanism and the second bracket; The axial direction of the central axis portion forms an acute angle with the horizon.

2. The solar photovoltaic bracket according to claim 1, characterized in that: The first ratchet mechanism includes a first ratchet movably arranged on the middle axis portion, and a first pawl fixedly arranged on the middle axis portion, and the first pawl can make the first ratchet rotate unidirectionally. The second ratchet mechanism includes a second ratchet movably arranged on the middle axis portion, and a second pawl fixedly arranged on the middle axis portion, and the second pawl can make the second ratchet rotate unidirectionally.

3. The solar photovoltaic bracket according to claim 2, characterized in that: A first driving portion is provided between the first pawl and the middle axis portion, and a second driving portion is provided between the second pawl and the middle axis portion. The first driving portion and the second driving portion are communicatively connected with the controller. The first driving portion is used to drive the first pawl to approach or move away from the first ratchet wheel, and the second driving portion is used to drive the second pawl to approach or move away from the second ratchet wheel.

4. The solar photovoltaic bracket according to claim 1, characterized in that: The first clutch mechanism includes a first clutch seat arranged on the first ratchet, a third driving part is arranged on the second bracket facing the first clutch seat, the second clutch mechanism includes a second clutch seat arranged on the second ratchet, a fourth driving part is arranged on the second bracket facing the second clutch seat, the third driving part and the fourth driving part are communicatively connected with the controller, the third driving part is provided with a first clutch block, the fourth driving part is provided with a second clutch block, the third driving part can drive the first clutch block to approach or move away from the first clutch seat, and the fourth driving part can drive the second clutch block to approach or move away from the second clutch seat.

5. The solar photovoltaic bracket according to claim 4, characterized in that: The first clutch seat is provided with a first protrusion, the first clutch block is provided with a first recessed portion corresponding to the shape of the first protrusion, the first protrusion is protrudingly arranged in the groove of the first recessed portion, the second clutch seat is provided with a second protrusion, the second clutch block is provided with a second recessed portion corresponding to the shape of the second protrusion, the second protrusion is protrudingly arranged in the groove of the second recessed portion.

6. The solar photovoltaic bracket according to claim 1, characterized in that: A limit block is arranged between the second bracket and the first bracket, and the limit block is used to limit the rotation angle and axial displacement of the second bracket relative to the first bracket.

7. The solar photovoltaic bracket according to claim 1, characterized in that: An angle sensor is provided between the second bracket and the middle axis portion, and the angle sensor is communicatively connected with the controller.

8. A photovoltaic system, characterized in that: It comprises a photovoltaic component and the daily photovoltaic bracket as described in any one of claims 1 to 7, wherein the photovoltaic component is arranged on the second bracket of the daily photovoltaic bracket.

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