Centrifugal self-adaptive dynamic change low-starting-wind-speed electromagnetic wind energy collector

Abstract

The invention relates to the technical field of electromagnetic wind energy collectors, and discloses a centrifugal self-adaptive dynamically-changing low-starting-wind-speed electromagnetic wind energy collector which comprises a wind driving part, a stator assembly and a rotor assembly, the rotor assembly is installed in the stator assembly, and the wind driving part is installed at the top of the rotor assembly; the stator assembly comprises an upper cover, a mounting shell and a lower cover. According to the centrifugal self-adaptive dynamically-changing low-starting-wind-speed electromagnetic wind energy collector, by arranging the movable plate, the fixed magnet, the sliding rail and the movable magnet, the overlapping area of the movable magnet and the coil is adjusted through centrifugal force, when the wind speed is low, the movable magnet is not completely overlapped, electromagnetic damping is reduced, and the starting wind speed is reduced; the centrifugal force is increased along with the increase of the rotating speed of the rotor shaft and enables the movable magnet to slide in the sliding rail, the overlapping area between the movable magnet and the coil is increased, output is improved, and the system is easier to overcome resistance to start at low wind speed.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic wind energy collectors, and particularly to a low-starting-wind-speed electromagnetic wind energy collector with centrifugal self-adaptive dynamic change. Background Technique

[0002] With the deep popularization of the global Internet of Things and the continuous development of new communication technologies such as low-power wide-area networks, wireless sensor networks and low-power electronic devices play a key role in many fields, covering all aspects of work and life. However, there are many problems with traditional power supply modes. On the one hand, the operation of electronic devices often requires a large number of chemical batteries. The recycling process of waste batteries is complex and costly, and improper handling is likely to cause secondary pollution. On the other hand, powering numerous electronic devices by means of separate wiring involves complex engineering planning and construction links, and requires a large amount of human, material and time resources. In some special application scenarios, such as the wild environment, not only is the technical difficulty high, but the later operation and maintenance costs remain high.

[0003] As the most widely distributed energy on the earth, small-scale device wind energy collection can continuously collect wind energy. Since it reduces the use of chemical batteries and solves the problem of difficult wiring, it can be used as the power source of low-power sensors in scenarios such as the wild, and has good application prospects in aspects such as environmental monitoring and equipment operation and maintenance. Wind energy collection is mainly divided into three categories according to different principles: piezoelectric, frictional, and electromagnetic. Among them, the electromagnetic type has significantly better output power and current magnitude than piezoelectric and frictional collectors, and has low manufacturing cost and mass production conditions. However, the position of the magnet inside the traditional electromagnetic wind energy collector is fixed, the required starting wind speed is high, and the output frequency is low. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a low-starting-wind-speed electromagnetic wind energy collector with centrifugal self-adaptive dynamic change, which solves the problems mentioned in the above background.

[0005] The present invention provides the following technical solutions: A low-starting-wind-speed electromagnetic wind energy collector with centrifugal self-adaptive dynamic change, comprising: a wind driving member, a stator assembly, and a rotor assembly. The rotor assembly is installed inside the stator assembly, and the wind driving member is installed on the top of the rotor assembly; The stator assembly includes an upper cover, a mounting housing, and a lower cover. The upper cover is installed on the top of the mounting housing, the lower cover is installed on the bottom of the mounting housing, an installation plate is connected inside the mounting housing, and a plurality of coils are installed on the top of the installation plate; The rotor assembly includes a rotor shaft, the rotor shaft is rotatably connected to the inner wall of the installation plate, the top of the rotor shaft passes through the upper cover and is connected with a connecting seat, and the wind driving member is installed on the top of the connecting seat; A moving plate is connected to the surface of the rotor shaft. A plurality of fixed magnets and a plurality of slide rails are respectively arranged on the moving plate. The plurality of fixed magnets and the plurality of slide rails are distributed at intervals. A moving magnet is connected to the inner wall of the slide rail.

[0006] Preferably, a plurality of mounting grooves are provided at the top of the mounting plate, and the plurality of mounting grooves are evenly distributed along the circumferential direction of the mounting plate. The plurality of coils are respectively mounted on the inner walls of the plurality of mounting grooves.

[0007] Preferably, the number of both the fixed magnets and the moving magnets is four, and the four fixed magnets and the four moving magnets are evenly distributed along the circumferential direction of the moving plate. The number of the coils is eight, and the coils are located below the fixed magnets and the moving magnets.

[0008] Preferably, the wind driving member includes a support frame, the support frame is mounted on the top of the connecting seat, and a plurality of wind cups are mounted on the support frame.

[0009] Preferably, a first bearing is mounted on the inner wall of the mounting plate, a second bearing is mounted on the inner wall of the upper cover, and both the first bearing and the second bearing are mounted on the surface of the rotor shaft.

[0010] Preferably, positioning ring grooves are provided at both the top and the bottom of the mounting housing, positioning insertion rings are provided on the surfaces of the upper cover and the lower cover, and the surface of the positioning insertion ring is connected to the inner wall of the positioning ring groove.

[0011] Preferably, a power management circuit board is installed inside the mounting housing, an aviation plug is installed on the surface of the mounting housing, and the power management circuit board is electrically connected to the aviation plug.

[0012] Preferably, a support base is mounted at the bottom of the lower cover.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by setting the moving plate, the fixed magnets, the slide rails and the moving magnets, the centrifugal force adjusts the overlapping area of the moving magnet and the coil. At low wind speeds, the moving magnet is not fully overlapped, reducing the electromagnetic damping and lowering the starting wind speed. As the wind speed increases, the centrifugal force increases with the increase in the rotational speed of the rotor shaft. The centrifugal force causes the moving magnet to slide in the slide rail, increasing the overlapping area between the moving magnet and the coil and enhancing the output. The system is more likely to overcome the resistance and start at low wind speeds.

[0014] 2. In the present invention, by setting the first bearing and the second bearing, the rotor shaft is rotatably connected to the mounting plate and the upper cover through the first bearing and the second bearing respectively, improving the stability of the rotor shaft during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1Schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the side-sectional structure of the present invention; Figure 3 Schematic diagram of the structure of the moving magnet of the present invention when it is not unfolded; Figure 4 Schematic diagram of the structure of the moving magnet of the present invention when it is unfolded; Figure 5 Schematic diagram of the structure at the position of the mounting plate of the present invention; Figure 6 Schematic diagram of the structure at the position of the power management circuit board of the present invention.

[0016] In the figure: 1. Upper cover; 2. Mounting housing; 3. Lower cover; 4. Coil; 5. Rotor shaft; 6. Connecting seat; 7. Moving plate; 8. Fixed magnet; 9. Slide rail; 10. Moving magnet; 11. Mounting groove; 12. Support frame; 13. Wind cup; 14. First bearing; 15. Second bearing; 16. Positioning ring groove; 17. Positioning insert ring; 18. Power management circuit board; 19. Aviation plug; 20. Support base; 21. Mounting plate. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-6 , a low-starting wind speed electromagnetic wind energy collector with centrifugal self-adaptive dynamic change, comprising: a wind driving member, a stator assembly, and a rotor assembly. The rotor assembly is installed inside the stator assembly, the wind driving member is installed on the top of the rotor assembly. The stator assembly includes an upper cover 1, a mounting housing 2, and a lower cover 3. The upper cover 1 is installed on the top of the mounting housing 2, the lower cover 3 is installed on the bottom of the mounting housing 2. An mounting plate 21 is connected inside the mounting housing 2. A plurality of coils 4 are installed on the top of the mounting plate 21. The rotor assembly includes a rotor shaft 5. The rotor shaft 5 is rotatably connected to the inner wall of the mounting plate 21. The top of the rotor shaft 5 passes through the upper cover 1 and is connected with a connecting seat 6. The wind driving member is installed on the top of the connecting seat 6. A moving plate 7 is connected to the surface of the rotor shaft 5. A plurality of fixed magnets 8 and a plurality of slide rails 9 are respectively arranged on the moving plate 7. The plurality of fixed magnets 8 and the plurality of slide rails 9 are distributed at intervals. The inner wall of the slide rail 9 is connected with a moving magnet 10. A support base 20 is installed at the bottom of the lower cover 3.

[0019] The top of the mounting plate 21 is provided with a plurality of mounting grooves 11, and the plurality of mounting grooves 11 are evenly distributed along the circumferential direction of the mounting plate 21. The plurality of coils 4 are respectively mounted on the inner walls of the plurality of mounting grooves 11.

[0020] In a specific embodiment, please refer to Figures 3-5 , the number of the fixed magnets 8 and the moving magnets 10 is four each, and the four fixed magnets 8 and the four moving magnets 10 are evenly distributed along the circumferential direction of the moving plate 7. The number of the coils 4 is eight, and the coils 4 are located below the fixed magnets 8 and the moving magnets 10.

[0021] The wind driving member includes a support frame 12. The support frame 12 is mounted on the top of the connecting seat 6. A plurality of wind cups 13 are mounted on the support frame 12. The support frame 12 is fixedly mounted on the top of the connecting seat 6 using bolts. A first bearing 14 is mounted on the inner wall of the mounting plate 21, and a second bearing 15 is mounted on the inner wall of the upper cover 1. Both the first bearing 14 and the second bearing 15 are mounted on the surface of the rotor shaft 5. The rotor shaft 5 is rotatably connected to the mounting plate 21 and the upper cover 1 through the first bearing 14 and the second bearing 15 respectively, improving the stability of the rotor shaft 5 during rotation.

[0022] Positioning ring grooves 16 are provided at both the top and bottom of the mounting housing 2. Positioning insertion rings 17 are provided on the surfaces of the upper cover 1 and the lower cover 3. The surface of the positioning insertion ring 17 is connected to the inner wall of the positioning ring groove 16. When installing the upper cover 1 and the lower cover 3, the positioning insertion ring 17 of the upper cover 1 is docked with the positioning ring groove 16 at the top of the mounting housing 2, and the positioning insertion ring 17 of the lower cover 3 is docked with the positioning ring groove 16 at the bottom of the mounting housing 2, facilitating the positioning of the positions of the upper cover 1 and the lower cover 3.

[0023] A power management circuit board 18 is installed inside the mounting housing 2, and an aviation plug 19 is installed on the surface of the mounting housing 2. The power management circuit board 18 is electrically connected to the aviation plug 19.

[0024] At low wind speeds, the moving magnets 10 do not completely overlap. At low wind speeds, when the moving magnets 10 do not fully expand, the overall moment of inertia of the system is small. Torque is equal to the moment of inertia multiplied by the angular acceleration. The reduction of the moment of inertia can increase the angular acceleration under the same wind torque, making it easier to start. At the same time, when the overlapping area between the magnets and the coils 4 decreases, the effective magnetic field strength decreases and the electromagnetic damping decreases, making it easier for the system to overcome resistance and start at low wind speeds, reducing the starting wind speed. As the wind speed increases, the centrifugal force increases with the increase in the rotational speed of the rotor shaft 5. The centrifugal force makes the moving magnets 10 slide within the slide rails 9, increasing the overlapping area between the moving magnets 10 and the coils 4 and enhancing the output. The system is more likely to overcome resistance and start at low wind speeds.

[0025] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The stator assembly includes an upper cover (1), a mounting housing (2) and a lower cover (3). The upper cover (1) is mounted on the top of the mounting housing (2), and the lower cover (3) is mounted on the bottom of the mounting housing (2). An installation plate (21) is connected inside the mounting housing (2), and a plurality of coils (4) are mounted on the top of the installation plate (21). The rotor assembly includes a rotor shaft (5). The rotor shaft (5) is rotatably connected to the inner wall of the installation plate (21). The top of the rotor shaft (5) passes through the upper cover (1) and is connected to a connection seat (6). The wind driving member is mounted on the top of the connection seat (6). A moving plate (7) is connected to the surface of the rotor shaft (5). A plurality of fixed magnets (8) and a plurality of slide rails (9) are respectively arranged on the moving plate (7). The plurality of fixed magnets (8) and the plurality of slide rails (9) are distributed at intervals. A moving magnet (10) is connected to the inner wall of the slide rail (9).

2. The electromagnetic wind energy collector with low starting wind speed and centrifugal self-adaptive dynamic change according to claim 1, characterized in that, A plurality of installation grooves (11) are arranged on the top of the installation plate (21), and the plurality of installation grooves (11) are uniformly distributed along the circumferential direction of the installation plate (21). The plurality of coils (4) are respectively mounted on the inner walls of the plurality of installation grooves (11).

3. An electromagnetic wind energy collector with centrifugal self-adaptive dynamic change and low starting wind speed according to claim 1, characterized in that The number of the fixed magnets (8) and the moving magnets (10) is four each, and the four fixed magnets (8) and the four moving magnets (10) are uniformly distributed along the circumferential direction of the moving plate (7). The number of the coils (4) is eight, and the coils (4) are located below the fixed magnets (8) and the moving magnets (10).

4. An electromagnetic wind energy collector with a low starting wind speed that is centrifugally self-adaptive and dynamically variable according to claim 1, characterized in that The wind driving member includes a support frame (12). The support frame (12) is mounted on the top of the connection seat (6), and a plurality of wind cups (13) are mounted on the support frame (12).

5. An electromagnetic wind energy collector with low starting wind speed that is centrifugally self-adaptive and dynamically variable according to claim 1, characterized in that, A first bearing (14) is mounted on the inner wall of the installation plate (21), and a second bearing (15) is mounted on the inner wall of the upper cover (1). The first bearing (14) and the second bearing (15) are both mounted on the surface of the rotor shaft (5).

6. The electromagnetic wind energy collector with low starting wind speed and centrifugal self-adaptive dynamic change according to claim 1, characterized in that Positioning ring grooves (16) are arranged at both the top and the bottom of the mounting housing (2). Positioning embedding rings (17) are arranged on the surfaces of the upper cover (1) and the lower cover (3). The surface of the positioning embedding ring (17) is connected to the inner wall of the positioning ring groove (16).

7. An electromagnetic wind energy collector with low starting wind speed that is centrifugally self-adaptive and dynamically variable according to claim 1, characterized in that, A power management circuit board (18) is installed inside the mounting housing (2), and an aviation plug (19) is installed on the surface of the mounting housing (2). The power management circuit board (18) is electrically connected to the aviation plug (19).

8. An electromagnetic wind energy collector with low starting wind speed and centrifugal self-adaptive dynamic change according to claim 1, characterized in that, A support base (20) is mounted on the bottom of the lower cover (3).

Images