A photovoltaic device

Abstract

The application discloses a kind of photovoltaic devices, belong to photovoltaic device technical field, this photovoltaic device, including the fixed frame of top being set to open state, the heat energy conversion mechanism is arranged at the both sides of fixed frame top opening, for day and night temperature difference generates deformation, converts heat energy into mechanical displacement, one end of the heat energy conversion mechanism is fixedly connected with index rotation mechanism, for all-weather passive tracking, the heat energy conversion mechanism includes heat collection disc and metal sheet, and metal sheet is located inside heat collection disc, the metal sheet is set to spiral structure, and metal sheet spiral structure is used to convert the bending deformation of metal sheet into rotary motion.The application uses heat energy conversion mechanism and index rotation mechanism, breaks through the limitation of traditional tracking system to rely on electric energy, and the photovoltaic panel can automatically adjust the angle according to temperature change, so that the orientation of photovoltaic panel can be adjusted in real time, to ensure that maximum solar radiation is received, so as to improve the power generation efficiency of photovoltaic device.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic devices, and particularly relates to a photovoltaic device. BACKGROUND

[0002] With the gradual depletion of fossil fuel resources, the demand for sustainable energy is becoming more and more urgent in the world. Photovoltaic technology, as a clean energy, can convert solar radiation into electricity and is one of the important ways to solve the energy supply problem. Photovoltaic devices are equipment that convert light energy into electrical energy through the photoelectric effect and are widely used in the field of solar power generation. They are used for distributed power generation, and users can independently build solar systems on rooftops, wastelands, or even remote areas, reducing dependence on traditional power grids and improving energy autonomy and security.

[0003] When in use, photovoltaic devices often use photovoltaic panels. The photovoltaic panels in existing photovoltaic devices are mostly installed at a fixed angle, which has low power generation efficiency. Therefore, an electric tracking system is needed to adjust the angle, so that the photovoltaic panel always maintains the best angle with the sun. The electric tracking system needs to install an electric drive, sensors, and a control system, which makes the initial installation cost high. At the same time, long-term operation also consumes a certain amount of electric energy for the movement of the drive system, which will reduce the energy efficiency of the photovoltaic system, especially in areas where electricity is scarce or the cost is high. In addition, since the electric tracking system is composed of multiple mechanical and electronic components, the system may malfunction, such as motor damage or sensor failure. The complexity of fault repair and routine maintenance is high, and regular inspection and maintenance are needed. SUMMARY

[0004] The technical problem to be solved by the application is to overcome the shortcomings of the prior art and provide a photovoltaic device.

[0005] The technical solution adopted to solve the above technical problems is: a photovoltaic device, comprising a fixed frame with an open top, heat energy conversion mechanisms are arranged on both sides of the open top of the fixed frame, for generating deformation due to day and night temperature difference to convert heat energy into mechanical displacement, a division rotating mechanism is fixedly connected to one end of the heat energy conversion mechanism for all-weather passive tracking.

[0006] The heat energy conversion mechanism comprises a heat collecting disc and a metal sheet, and the metal sheet is located inside the heat collecting disc. The metal sheet is arranged in a spiral structure, and the spiral structure of the metal sheet is used to convert the bending deformation of the metal sheet into rotary motion.

[0007] The indexing rotating mechanism comprises four support plates fixedly connected with the top surface of the fixed frame, and the four support plates are symmetrically arranged in pairs, one side of one of the support plates is rotatably connected with a second bevel gear plate, the heat collecting disc is fixedly connected with the side of the support plate away from the second bevel gear plate, and the second bevel gear plate connecting shaft is rotatably connected with the support plate and the heat collecting disc, and one end of the metal sheet is fixedly connected with the penetrating end of the second bevel gear plate connecting shaft;

[0008] The other support plate is fixedly connected with a first bevel gear plate on one side, and the first bevel gear plate is oppositely arranged with the second bevel gear plate, the first bevel gear plate is rotatably connected with a connecting frame in a triangular structure on the side away from the support plate, a connecting rod is rotatably connected with the connecting frame on one side, and the first bevel gear and the second bevel gear are fixedly connected at both ends of the connecting rod, the first bevel gear is in transmission connection with the second bevel gear plate, and the second bevel gear is in transmission connection with the first bevel gear plate.

[0009] Through the above technical scheme, the angle of the photovoltaic panel is automatically adjusted with the change of the position of the sun, ensuring that the equipment continuously absorbs the maximum amount of solar energy at different time periods in a day, avoiding the low power generation efficiency caused by the fixed angle installation, and through the temperature change to drive the angle adjustment of the photovoltaic panel, the initial investment and operation and maintenance cost are significantly reduced without relying on external power or complex control system.

[0010] Further, the support plate is rotatably connected with a fixed rod on the side away from the first bevel gear plate, the fixed rod penetrating end is fixedly connected with the connecting frame, the fixed rod is rotatably connected with a rotating plate and a convex plate at the end away from the connecting frame, and a ratchet wheel is rotatably connected with the fixed rod at the end away from the connecting frame, the fixed rod is located at the eccentric position of the rotating plate, a rope is fixedly connected with the bottom of the side of the fixed rod away from the rotating plate, and a counterweight is fixedly connected with the fixed frame at the other end of the rope.

[0011] Through the above technical scheme, the complex electric components are not relied on, and the problems such as motor failure and line damage that may occur in the electric tracking system are avoided, and the ratchet transmission mechanism can ensure that the photovoltaic panel is firmly locked after each angle adjustment, reducing the failure and maintenance demand of the mechanical system.

[0012] Further, the rotating plate is rotatably connected with a sleeve plate outside, and the rotating plate is located inside the sleeve plate, the sleeve plate is rotatably connected with an L-shaped connecting plate at one end, the L-shaped connecting plate is rotatably connected with a support frame at the corner end, the support frame is fixedly connected with the fixed frame, the L-shaped connecting plate is rotatably connected with an arc-shaped claw at the end away from the support frame, the arc-shaped claw is in sliding engagement with the ratchet wheel, the support frame is rotatably connected with a pawl at the top, the pawl is in sliding engagement with the ratchet wheel, a fixed block is fixedly connected with the side of the pawl facing the convex plate, and a metal spring is fixedly connected between the side of the pawl and the arc-shaped claw away from the convex plate.

[0013] By the above technical scheme, the reverse rotation or back-off of the photovoltaic panel during the adjustment process can be effectively prevented, and the photovoltaic panel can be stably maintained at the predetermined position after adjustment, and accidental displacement caused by external factors (such as wind) can be avoided.

[0014] Further, the first memory spring is fixedly connected to the top of the pawl, and the other end of the first memory spring is fixedly connected to the support frame, the second memory spring is fixedly connected to the bottom of the arc-shaped pawl, and the other end of the second memory spring is fixedly connected to the support frame, the fixed part is fixedly connected to the center of the side of the ratchet away from the lug plate, and the photovoltaic panel is installed between the two fixed parts on the two sides of the fixed frame, and the two fixed parts are located at the eccentric position of the photovoltaic panel.

[0015] By the above technical scheme, the photovoltaic panel is pushed step by step by a mechanical method, and can be firmly locked after each adjustment, so that it is not necessary to continuously supply power to maintain the angle of the photovoltaic panel, and therefore, the system can effectively save energy consumption when adjusting.

[0016] Further, the second sliding groove is formed in one side of the fixed frame, and the first sliding groove is formed in the inside of the fixed frame on both sides, the sliding block is arranged in the first sliding groove and is in sliding connection with the fixed frame, the double-thread rod is rotatably connected to the side of the sliding block away from the fixed frame, and the other end of the double-thread rod is located in the second sliding groove.

[0017] By the above technical scheme, the step-by-step rotation feature means that the load borne by the mechanism is relatively small during each adjustment, which helps to reduce friction and wear, improves the durability of the system during long-term use, and prolongs the service life of the equipment.

[0018] Further, the other end of the double-thread rod is in sliding connection with the fixed frame, the first synchronous belt assembly is fixedly connected between the ends of the double-thread rods away from the sliding block on the two sides of the fixed frame, the synchronous wheels in the first synchronous belt assembly are fixedly connected with the double-thread rods, and the first handle is fixedly connected with one of the synchronous wheels in the first synchronous belt assembly.

[0019] By the above technical scheme, the initial inclination of the photovoltaic panel can be adjusted, and it can be ensured that each photovoltaic panel can receive sunlight at the best angle during the initial installation, thereby improving the overall power generation efficiency of the photovoltaic system.

[0020] Further, two adjusting rods are threadedly connected between the two double-thread rods on the two sides of the fixed frame, the lifting threaded rod is threadedly connected through the sliding block, and the two ends of the lifting threaded rod are rotatably connected with the fixed frame, and the second synchronous belt assembly is rotatably connected to the top of the fixed frame.

[0021] Through the technical scheme, the solar radiation intensity and the solar altitude angle are different in different regions, the photovoltaic system can optimize light energy absorption according to different geographical positions and seasonal changes by adjusting the inclination angle.

[0022] Further, the synchronous wheel connecting shaft in the second synchronous belt assembly is rotatably connected with the fixing frame, and the penetrating end of the synchronous wheel connecting shaft in the second synchronous belt assembly is fixedly connected with the lifting threaded rod, and the top of one of the synchronous wheels in the second synchronous belt assembly is fixedly connected with a second handle.

[0023] Through the technical scheme, different specifications of photovoltaic panels may have different optimal requirements for the receiving angle of sunlight, and by accurately adjusting the initial inclination angle, each specification of photovoltaic panel can work at its optimal angle, avoiding insufficient illumination caused by improper angle, and ensuring that the power generation efficiency of each photovoltaic panel reaches the maximum.

[0024] The beneficial effects of the present application are as follows: (1) the present application uses a metal sheet and sets it in a spiral shape, the longer the length of the metal sheet, the greater the bending deformation it produces when subjected to heat, and it bends in the same direction when heated, by using natural temperature changes as a driving force, the photovoltaic panel can automatically adjust the angle with temperature changes, follow the sun's trajectory, thereby improving the power generation efficiency of the photovoltaic panel, without additional power consumption, thereby reducing the overall energy consumption of the system and improving the energy utilization efficiency of the system; (2) the present application bends the metal sheet when heated, the second bevel gear rotates, the first bevel gear on one side of the second bevel gear revolves and rotates along the circumference of the second bevel gear, under the action of the connecting rod, the second bevel gear at the other end rotates, revolves and rotates along the circumference of the first bevel gear, and the connecting frame revolves with the connecting rod to drive the fixed rod to rotate, which can produce a larger output force under a smaller input power, making the adjustment of the photovoltaic panel more precise, effectively tracking the movement of the sun, thereby maximizing the light absorption efficiency of the photovoltaic panel; (3) the present application drives the rotating plate and the convex plate to rotate through the fixed rod, and when the convex plate rotates, it can push the fixed block to move, thereby driving the pawl to rotate and separate from the ratchet wheel, and when the rotating plate rotates, due to the eccentric connection between the fixed rod and the rotating plate, the sleeve plate moves in an elliptical motion, causing the L-shaped connecting plate to swing around the connection point with the support frame, pushing the ratchet wheel, and under the action of the metal spring, the pawl and the arc-shaped claw move alternately, promoting the ratchet wheel to rotate step by step, so that the photovoltaic panel can rotate step by step in an accurate stepping manner, this control method can ensure that the photovoltaic panel maintains a fixed angle during adjustment, thereby accurately tracking the movement of the sun. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a first perspective view of the structure of the present application;

[0026] Figure 2 is a third perspective view of the structure of the present application;

[0027] Figure 3 is a third perspective view of the structure of the present application;

[0028] Figure 4 is a fourth perspective view of the structure of the present application;

[0029] Figure 5 is a first perspective view of the structure of the present application; Figure 3 is an enlarged view of A of the structure of the present application;

[0030] Figure 6 is a second perspective view of the structure of the present application; Figure 2 is an enlarged view of B of the structure of the present application;

[0031] Figure 7 is an enlarged view of C of the structure of the present application; Figure 4

[0032] Figure 8 is a first perspective view of the structure of the present application;

[0033] Figure 9 is a second perspective view of the structure of the present application;

[0034] Figure 10 is a perspective view of the structure of the present application;

[0035] Figure 11 is a perspective view of the structure of the present application;

[0036] Figure 12 is a perspective view of the structure of the present application.

[0037] Reference signs: 1, fixed frame; 2, first sliding groove; 3, second sliding groove; 4, sliding block; 5, lifting threaded rod; 6, double-threaded rod; 7, adjusting rod; 8, first synchronous belt assembly; 9, first handle; 10, second synchronous belt assembly; 11, second handle; 12, photovoltaic panel; 13, support plate; 14, first bevel gear plate; 15, heat collecting disc; 16, metal sheet; 17, connecting frame; 18, connecting rod; 19, second bevel gear plate; 20, first bevel gear; 21, second bevel gear; 22, fixed rod; 23, rope cable; 24, counterweight; 25, support frame; 26, L-shaped connecting plate; 27, cover plate; 28, rotating plate; 29, protruding plate; 30, ratchet wheel; 31, pawl; 32, fixed block; 33, arc-shaped claw; 34, first memory spring; 35, second memory spring; 36, metal spring; 37, fixing piece. DETAILED DESCRIPTION

[0038] ​To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0039] like Figures 1-4 As shown, a photovoltaic device according to this embodiment includes a fixed frame 1 with an open top. A second sliding groove 3 is provided through one side of the fixed frame 1, and first sliding grooves 2 are provided on both sides inside the fixed frame 1. A slider 4 is provided inside the first sliding groove 2 and is slidably connected to the fixed frame 1. A double threaded rod 6 is rotatably connected to the side of the slider 4 away from the fixed frame 1. Two adjusting rods 7 are threadedly connected between the two double threaded rods 6 on both sides of the fixed frame 1. A lifting threaded rod 5 is threadedly connected to the slider 4, and both ends of the lifting threaded rod 5 are rotatably connected to the fixed frame 1. A second synchronous belt assembly 10 is rotatably connected to the top of the fixed frame 1. The synchronous pulley connecting shaft in the second synchronous belt assembly 10 is rotatably connected to the fixed frame 1, and the through end of the synchronous pulley connecting shaft in the second synchronous belt assembly 10 is fixedly connected to the lifting threaded rod 5. The initial tilt angle of the photovoltaic panel 12 can be adjusted to ensure that each photovoltaic panel 12 can receive sunlight at the optimal angle in the early stage of installation, thereby improving the overall performance of the photovoltaic system. In terms of power generation efficiency, a second handle 11 is fixedly connected to the top of one of the synchronous pulleys in the second synchronous belt assembly 10. The other end of the double threaded rod 6 is slidably connected to the fixed frame 1. The ends of the double threaded rods 6 located on both sides of the fixed frame 1 away from the slider 4 are fixedly connected to the first synchronous belt assembly 8. The synchronous pulley in the first synchronous belt assembly 8 is fixedly connected to the double threaded rod 6. The solar radiation intensity and solar altitude angle are different in different regions. By adjusting the tilt angle, the photovoltaic system can optimize light energy absorption according to different geographical locations and seasonal changes. A first handle 9 is fixedly connected to one of the synchronous pulleys in the first synchronous belt assembly 8. The other end of the double threaded rod 6 is located inside the second slide groove 3. Photovoltaic panels 12 of different specifications may have different optimal requirements for the angle of sunlight reception. By precisely adjusting the initial tilt angle, each type of photovoltaic panel 12 can work at its optimal angle, avoiding insufficient light due to unsuitable angles, and ensuring that the power generation efficiency of each photovoltaic panel 12 is maximized.

[0040] like Figure 5As shown, the heat energy conversion mechanism is arranged at both sides of the opening at the top of the fixing frame 1, for generating deformation by day and night temperature difference, converting heat energy into mechanical displacement, one end of the heat energy conversion mechanism is fixedly connected with the indexing rotating mechanism, for all-weather passive tracking, the heat energy conversion mechanism comprises a heat collecting disc 15 and a metal sheet 16, and the metal sheet 16 is located inside the heat collecting disc 15, the heat collecting disc 15 is made of aluminum material, which can provide good thermal conductivity, has lighter weight and good corrosion resistance, the metal sheet 16 is arranged in a spiral structure, and the spiral structure of the metal sheet 16 is used for converting the bending deformation of the metal sheet 16 into rotary motion, the spiral design of the metal sheet 16 can significantly increase the length of the metal sheet 16, and the longer the length of the metal sheet 16, the greater the bending deformation of the metal sheet 16 when subjected to thermal action, so that the influence of temperature change on the bending degree of the metal sheet 16 is more significant, thereby improving the sensitivity of the force of the second bevel gear disc 19, secondly, the spiral design has another important purpose, that is, to convert the bending deformation of the metal sheet 16 into the rotary motion of the second bevel gear disc 19, and this conversion can drive the second bevel gear disc 19 to rotate in a very intuitive way, with the change of the position of the sun, the angle of the photovoltaic panel 12 is automatically adjusted, ensuring that the equipment continuously absorbs the maximum amount of solar energy at different time periods in a day, avoiding the low power generation efficiency caused by the fixed angle installation, and the angle of the photovoltaic panel 12 is adjusted by temperature change, without relying on external power or complex control system, which significantly reduces the initial investment and operation and maintenance cost.

[0041] As Figures 1-11As shown, the indexing rotating mechanism comprises four support plates 13 fixedly connected to the top surface of the fixed frame 1, a fixed rod 22 is rotatably connected to the side of the support plate 13 away from the first bevel gear plate 14, and the penetrating end of the fixed rod 22 is fixedly connected to the connecting frame 17, the end of the fixed rod 22 away from the connecting frame 17 is fixedly connected to a rotating plate 28 and a convex plate 29, the rotating plate 28 is rotatably connected to the outside of a sleeve plate 27, and the rotating plate 28 is located inside the sleeve plate 27, one end of the sleeve plate 27 is rotatably connected to an L-shaped connecting plate 26, the corner end of the L-shaped connecting plate 26 is rotatably connected to a support frame 25, and the support frame 25 is fixedly connected to the fixed frame 1, the end of the L-shaped connecting plate 26 away from the support frame 25 is rotatably connected to an arc-shaped claw 33, which can effectively prevent the photovoltaic panel 12 from reversing or retreating during adjustment, and ensure that the photovoltaic panel 12 can be stably maintained at the predetermined position after adjustment, and will not be accidentally displaced due to external factors (such as wind), and the arc-shaped claw 33 is slidably engaged with the ratchet wheel 30, the support frame 25 is rotatably connected to a pawl 31 at the top, the top of the pawl 31 is fixedly connected to a first memory spring 34, and after special training, the material of the first memory spring 34 and a second memory spring 35 will automatically switch between two preset shapes when the temperature rises and falls, the spring expands at high temperature, and contracts at low temperature, and the other end of the first memory spring 34 is fixedly connected to the support frame 25, the bottom of the arc-shaped claw 33 is fixedly connected to the second memory spring 35, and the other end of the second memory spring 35 is fixedly connected to the support frame 25, the ratchet wheel 30 is fixedly connected to a fixing piece 37 at the center of the side away from the convex plate 29, and the photovoltaic panel 12 is installed between the fixing pieces 37 on both sides of the fixed frame 1, and the two fixing pieces 37 are located at the eccentric position of the photovoltaic panel 12, so that the overall center of gravity of the photovoltaic panel 12 is located at the bottom of the fixing piece 37, and the pawl 31 is slidably engaged with the ratchet wheel 30, the photovoltaic panel 12 is pushed step by step by a mechanical method, and can be firmly locked after each adjustment, avoiding the need for continuous power supply to maintain the angle of the photovoltaic panel 12, therefore, the system can effectively save energy consumption when adjusting.

[0042] As Figures 1-12Meanwhile, the pawl 31 is fixedly connected with a fixed block 32 on the side facing the protruding plate 29, a metal spring 36 is fixedly connected between the pawl 31 and the arc-shaped claw 33 away from the protruding plate 29, the metal spring 36 is a conventional elastic spring, and the metal spring 36 pulls the pawl 31 and the arc-shaped claw 33 in daily use, so that the pawl 31 is always engaged with the ratchet wheel 30, thereby achieving a bidirectional locking function of the ratchet wheel 30, meanwhile, the arc-shaped claw 33 is located in the ratchet groove of the ratchet wheel 30 and can push the ratchet wheel 30, the fixed rod 22 is rotatably connected with the ratchet wheel 30 at the end away from the connecting frame 17, the fixed rod 22 is located at the eccentric position of the rotating plate 28, a cable 23 is fixedly connected to the bottom of the fixed rod 22 away from the rotating plate 28, the other end of the cable 23 is slidably connected with the fixed frame 1, a counterweight 24 is installed at the penetrating end of the cable 23, and the four supporting plates 13 are symmetrically arranged between each other, without relying on complex electric components, the problems of motor failure and line damage that may occur in the electric tracking system are avoided, the ratchet wheel 30 transmission mechanism can ensure that the photovoltaic panel 12 is firmly locked after each angle adjustment, thereby reducing the failure and maintenance requirements of the mechanical system, one side of one of the supporting plates 13 is rotatably connected with a second bevel gear 19, the heat collecting disc 15 is fixedly connected to the side of the supporting plate 13 away from the second bevel gear 19, the connecting shaft of the second bevel gear 19 is rotatably connected with the supporting plate 13 and the heat collecting disc 15, one end of the metal sheet 16 is fixedly connected with the penetrating end of the connecting shaft of the second bevel gear 19, the other supporting plate 13 is fixedly connected with a first bevel gear 14 on one side, the first bevel gear 14 is oppositely arranged with the second bevel gear 19, the connecting frame 17 in a triangular structure is rotatably connected to the side of the first bevel gear 14 away from the supporting plate 13, the connecting rod 18 is rotatably connected on one side of the connecting frame 17, the first bevel gear 20 and the second bevel gear 21 are fixedly connected at both ends of the connecting rod 18, the first bevel gear 20 is in transmission connection with the second bevel gear 19, and the second bevel gear 21 is in transmission connection with the first bevel gear 14, the step-by-step rotation feature means that the load borne by the mechanism is relatively small during each adjustment, which helps to reduce friction and wear, the durability of the system is improved in long-term use, and the service life of the equipment is prolonged.

[0043] The working principle of the embodiment is as follows: the whole device is moved to the installation site, the photovoltaic panel 12 is installed on the fixing piece 37, and the fixing piece 37 is located at the eccentric position of the photovoltaic panel 12, the second handle 11 is rotated to drive the second synchronous belt assembly 10 to transmit, so that the two lifting threaded rods 5 are simultaneously rotated, thereby making the sliding block 4 move up and down in the first sliding groove 2, and in turn driving the double-threaded rod 6 on one side of the sliding block 4 to synchronously move up and down in the second sliding groove 3, then the first handle 9 is rotated to drive the first synchronous belt assembly 8 to transmit, so that the two double-threaded rods 6 are simultaneously rotated, thereby making the two adjusting rods 7 move oppositely or divergently, thereby supporting the bottom of the photovoltaic panel 12 of different specifications, so as to quickly set the initial inclination according to the latitude, and take into account the seasonal change.

[0044] At sunrise, with the temperature gradually increasing, the first memory spring 34 and the second memory spring 35 are heated and stretched, the metal sheet 16 in the heat collection disc 15 on both sides of the fixed frame 1 is heated and bent, the second bevel gear 19 is driven to rotate, the first bevel gear 20 on one side of the second bevel gear 19 rotates along the circumference of the second bevel gear 19 while performing a revolution, under the action of the connecting rod 18, the second bevel gear 21 at the other end is driven to rotate, performs a revolution along the circumference of the first bevel gear 14 while performing a revolution, and the connecting frame 17 follows the connecting rod 18 to perform a revolution to drive the fixed rod 22 to rotate, the fixed rod 22 rotates to wind and roll up the cable 23, drives the counterweight 24 to move upwards, and at the same time, the fixed rod 22 drives the rotating plate 28 and the convex plate 29 to rotate.

[0045] When the convex plate 29 rotates, it can push the fixed block 32 to move, thereby driving the pawl 31 to rotate and separate from the ratchet wheel 30, and when the rotating plate 28 rotates, due to the eccentric connection between the fixed rod 22 and the rotating plate 28, the sleeve plate 27 is driven to perform an elliptical motion, so that the L-shaped connecting plate 26 performs a swing motion with the connecting part of the support frame 25 as the origin, pushes the ratchet wheel 30, and under the action of the metal spring 36, the pawl 31 and the arc-shaped claw 33 perform an interlaced motion, promoting the ratchet wheel 30 to rotate step by step, thereby driving the photovoltaic panel 12 to follow the rising sun to rotate step by step.

[0046] At sunset, with the temperature decreasing, the first memory spring 34 and the second memory spring 35 contract at low temperature, respectively driving the pawl 31 and the arc-shaped claw 33 to rotate towards the support frame 25, so that the arc-shaped claw 33 and the pawl 31 separate from the ratchet wheel 30, at the same time, under the action of gravity, the metal sheet 16 gradually returns to the initial state, the counterweight 24 moves downwards, the fixed rod 22 is driven to rotate by the cable 23, and the metal sheet 16 is reset, and since the two fixed parts 37 are located at the eccentric position of the photovoltaic panel 12, the center of gravity of the photovoltaic panel 12 is located at the bottom of the two fixed parts 37, and then under the action of gravity, the photovoltaic panel 12 reversely rotates and returns to the initial inclination, preparing for the next day cycle.

[0047] The above only describes the preferred embodiments of the present application, and is not used to limit the protection scope of the present application.

Claims

1. A photovoltaic device, comprising a mounting frame (1) with an open top, characterized in that: The top opening of the fixed frame (1) is provided with a heat energy conversion mechanism on both sides, which is used to generate deformation due to the temperature difference between day and night, and convert heat energy into mechanical displacement. One end of the heat energy conversion mechanism is fixedly connected to an indexing rotation mechanism for all-weather passive tracking. The heat energy conversion mechanism includes a heat collection plate (15) and a metal sheet (16), and the metal sheet (16) is located inside the heat collection plate (15). The metal sheet (16) is arranged in a spiral structure, and the spiral structure of the metal sheet (16) is used to convert the bending deformation of the metal sheet (16) into rotational motion. The indexing rotation mechanism includes four support plates (13) fixedly connected to the top surface of the fixed frame (1), and the four support plates (13) are symmetrically arranged in pairs. One of the support plates (13) is rotatably connected to a second bevel gear disk (19) on one side, and the heat collection disk (15) is fixedly connected to the support plate (13) on the side away from the second bevel gear disk (19). At the same time, the connecting shaft of the second bevel gear disk (19) is rotatably connected to the support plate (13) and the heat collection disk (15) through it. One end of the metal sheet (16) is fixedly connected to the through end of the connecting shaft of the second bevel gear disk (19). Another support plate (13) is fixedly connected to one side of a first bevel gear disk (14), and the first bevel gear disk (14) and the second bevel gear disk (19) are arranged opposite to each other. The first bevel gear disk (14) is rotatably connected to a connecting frame (17) with a triangular structure on the side away from the support plate (13), and a connecting rod (18) is rotatably connected through one side of the connecting frame (17). At the same time, the two ends of the connecting rod (18) are fixedly connected to a first bevel gear (20) and a second bevel gear (21). The first bevel gear (20) is connected to the second bevel gear disk (19) in a transmission connection, and the second bevel gear (21) is connected to the first bevel gear disk (14) in a transmission connection.

2. The photovoltaic device according to claim 1, characterized in that, A fixed rod (22) is rotatably connected through the side of the support plate (13) away from the first bevel gear plate (14), and the end of the fixed rod (22) is fixedly connected to the connecting frame (17). A rotating plate (28) and a protruding plate (29) are fixedly connected through the end of the fixed rod (22) away from the connecting frame (17), and a ratchet (30) is rotatably connected to the end of the fixed rod (22) away from the connecting frame (17). At the same time, the fixed rod (22) is located at the eccentric position of the rotating plate (28). A rope (23) is fixedly connected to the bottom of the side of the fixed rod (22) away from the rotating plate (28), and the other end of the rope (23) is slidably connected through the fixed frame (1). At the same time, a counterweight (24) is installed at the end of the rope (23).

3. A photovoltaic device according to claim 2, characterized in that, The rotating plate (28) is rotatably connected to a sleeve plate (27) on the outside, and the rotating plate (28) is located inside the sleeve plate (27). One end of the sleeve plate (27) is rotatably connected to an L-shaped connecting plate (26). The corner end of the L-shaped connecting plate (26) is rotatably connected to a support frame (25), and the support frame (25) is fixedly connected to a fixed frame (1). The end of the L-shaped connecting plate (26) away from the support frame (25) is rotatably connected to an arc-shaped claw (33), and the arc-shaped claw (33) is slidably engaged with a ratchet (30). The top of the support frame (25) is rotatably connected to a pawl (31), and the pawl (31) is slidably engaged with a ratchet (30). At the same time, a fixing block (32) is fixedly connected to the side of the pawl (31) facing the convex plate (29). A metal spring (36) is fixedly connected between the pawl (31) and the side of the arc-shaped claw (33) away from the convex plate (29).

4. A photovoltaic device according to claim 3, characterized in that, The top of the pawl (31) is fixedly connected to a first memory spring (34), and the other end of the first memory spring (34) is fixedly connected to the support frame (25). The bottom of the arc-shaped pawl (33) is fixedly connected to a second memory spring (35), and the other end of the second memory spring (35) is fixedly connected to the support frame (25). A fixing member (37) is fixedly connected to the center of the side of the ratchet (30) away from the convex plate (29), and a photovoltaic panel (12) is installed between the fixing members (37) on both sides of the fixing frame (1). At the same time, the two fixing members (37) are located at the eccentric part of the photovoltaic panel (12).

5. A photovoltaic device according to claim 1, characterized in that, The fixed frame (1) has a second sliding groove (3) through one side, and the fixed frame (1) has a first sliding groove (2) on both sides inside. The first sliding groove (2) is provided with a slider (4) that is slidably connected to the fixed frame (1). The slider (4) is rotatably connected to a double threaded rod (6) on the side away from the fixed frame (1), and the other end of the double threaded rod (6) is located inside the second sliding groove (3).

6. A photovoltaic device according to claim 5, characterized in that, The other end of the double threaded rod (6) is slidably connected to the fixed frame (1). The ends of the double threaded rods (6) located on both sides of the fixed frame (1) away from the slider (4) are fixedly connected to the first synchronous belt assembly (8). The synchronous pulley in the first synchronous belt assembly (8) is fixedly connected to the double threaded rod (6). One of the synchronous pulleys in the first synchronous belt assembly (8) is fixedly connected to the first handle (9).

7. A photovoltaic device according to claim 6, characterized in that, Two adjusting rods (7) are threadedly connected between the two double threaded rods (6) on both sides of the fixed frame (1). The slider (4) is threadedly connected to the lifting threaded rod (5), and the two ends of the lifting threaded rod (5) are rotatably connected to the fixed frame (1). The top of the fixed frame (1) is rotatably connected to the second synchronous belt assembly (10).

8. A photovoltaic device according to claim 7, characterized in that, The synchronous pulley connecting shaft in the second synchronous belt assembly (10) is rotatably connected to the fixed frame (1), and the through end of the synchronous pulley connecting shaft in the second synchronous belt assembly (10) is fixedly connected to the lifting threaded rod (5). A second handle (11) is fixedly connected to the top of one of the synchronous pulleys in the second synchronous belt assembly (10).

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