An electromagnetic induction power generation device

Abstract

The present invention proposes an electromagnetic induction type power generation device, comprising a static module and a dynamic module; the static module comprises a U-shaped magnetic core, a static magnetic core with an outer coil, the coil and the static magnetic core are located inside the U-shaped magnetic core, and the U-shaped magnetic core and the static magnetic core form an E-shaped magnetic core; the dynamic module comprises a permanent magnet, a dynamic magnetic core 1 and a dynamic magnetic core 2 and a reed; the permanent magnet is located between the dynamic magnetic core 1 and the dynamic magnetic core 2 to form a U-shaped magnetic circuit, and the reed is fixedly connected to the U-shaped magnetic circuit; the front end of the static magnetic core extends from the inside of the U-shaped magnetic core to between the dynamic magnetic core 1 and the dynamic magnetic core 2, the dynamic magnetic core 1 extends between the first free end of the U-shaped magnetic core and the static magnetic core, and the dynamic magnetic core 2 extends between the second free end of the U-shaped magnetic core and the static magnetic core. When the U-shaped magnetic circuit of the dynamic module reciprocates between the E-shaped magnetic cores of the static module, the permanent magnet applies an alternating magnetic field to the static magnetic core, and the coil generates a voltage output based on electromagnetic induction. The present invention has a simple structure, convenient assembly, high reliability and low cost.

Description

Technical Field

[0001] The invention relates to an electromagnetic induction power generation device, which can promote a wireless switch to realize self-power supply and be applied to a wireless sensor in a vibration environment. Background Art

[0002] Energy harvesting technology is an emerging technology that obtains energy in the form of light, wind, heat, magnetic, mechanical, etc. from the environment and converts it into electrical energy. Energy harvesting technology helps wireless sensors achieve self-powered energy and has great potential in the Internet of Things and even smart cities.

[0003] In people's daily life, in order to achieve the upgrade and transformation of smart homes, the intelligence of various switch control applications accounts for a large proportion. However, to date, switch control applications such as lighting equipment generally use wired switches to control opening and closing. The use of wired switches requires that the installation positions of each switch must be planned in detail and accurately in advance during the construction and initial installation of the house, and that switch boxes, grooves, PVC pipes, and cables must be pre-buried on the wall. These are not only time-consuming and labor-intensive, but also waste materials such as pipelines. What's more troublesome is that if it is found later that the switch layout is not satisfactory and needs to be moved, changed, or increased or decreased, the wall must be re-cut and wired, otherwise it cannot be changed.

[0004] In order to solve the above problems, the existing technology uses wireless remote control switches to control the opening and closing of lighting products and other applications. However, such lighting products using wireless remote control switches have not been widely accepted by the public and have not become mainstream applications. This is because energy supply is the main constraint limiting the application of such products. Each time the switch is pressed or toggled, mechanical energy is applied and dissipated. In combination with the characteristics of energy harvesting technology, a power generation device can be designed to collect mechanical energy during the operation of the switch and convert it into electrical energy to power circuits such as wireless modules to achieve self-powering of the wireless switch. Summary of the invention

[0005] The purpose of the present invention is to propose an electromagnetic induction power generation device, which aims to collect the mechanical energy dissipated during the operation of the switch and convert it into electrical energy to achieve self-powering of the wireless switch. It has a simple structure, convenient assembly, high reliability and low cost, and promotes the widespread application of self-powered wireless switches in smart cities and other fields.

[0006] In order to solve the above technical problems, the present invention provides an electromagnetic induction type power generation device, including a static module and a dynamic module; the static module includes a U-shaped magnetic core, a static magnetic core with an outer coil, the coil and the static magnetic core are located inside the U-shaped magnetic core, and the U-shaped magnetic core and the static magnetic core form an E-shaped magnetic core; the dynamic module includes a permanent magnet, a dynamic magnetic core 1 and a dynamic magnetic core 2 and a reed; the permanent magnet is located between the dynamic magnetic core 1 and the dynamic magnetic core 2 to form a U-shaped magnetic circuit, and the reed is fixedly connected to the U-shaped magnetic circuit; the front end of the static magnetic core extends from the inside of the U-shaped magnetic core to between the dynamic magnetic core 1 and the dynamic magnetic core 2, the dynamic magnetic core 1 extends to between the first free end of the U-shaped magnetic core and the static magnetic core, and the dynamic magnetic core 2 extends to between the second free end of the U-shaped magnetic core and the static magnetic core. When the U-shaped magnetic circuit of the dynamic module reciprocates between the E-shaped magnetic cores of the static module, the permanent magnet applies an alternating magnetic field on the static magnetic core, and the coil generates a voltage output based on electromagnetic induction.

[0007] Furthermore, a magnetic core jack is provided at the middle connecting portion of the U-shaped magnetic core, and a plug head 1 is provided at the rear end of the static magnetic core, and the plug head 1 is plugged into the magnetic core jack.

[0008] Furthermore, the static magnetic core is fixed by a frame, and the coil is wound on the frame; further, the middle connecting portion of the U-shaped magnetic core is provided with a magnetic core jack, and the rear end of the static magnetic core is provided with a pin head 1, which is plugged into the magnetic core jack.

[0009] Furthermore, a first card slot is provided at the middle connecting portion of the U-shaped magnetic core, a buckle is provided at the rear end of the skeleton, and the first card slot cooperates with the buckle; a second pin head is provided at the front end of the static magnetic core, and a limiting component and two pins are provided at the front end of the skeleton; the limiting component cooperates with the shoulder of the second pin head, and the two pins serve as lead-out connectors of the coil; the second pin head extends between the first dynamic magnetic core and the second dynamic magnetic core.

[0010] Furthermore, the second free end is provided with two second card slots, and the two pins are respectively fixed in the two second card slots.

[0011] Furthermore, the main body of the static magnetic core is a bar structure.

[0012] Furthermore, the reed is fixed between the dynamic magnetic core 1 and the dynamic magnetic core 2 through a fixing component.

[0013] Compared with the prior art, the present invention has the following significant advantages: the static module and the dynamic module have clear functions and a simple structure, which are convenient for integration with various self-powered wireless switches; the U-shaped magnetic core, the static magnetic core, the dynamic magnetic core, the permanent magnet, the coil and the skeleton can all be modularly designed, which is convenient for processing and manufacturing, and is conducive to mass production, and has obvious cost advantages; the service life is long and the reliability is high; it can replace the use of batteries, does not pollute the environment, and has no repeated waste; the self-powered wireless switch using the electromagnetic induction power generation device can arrange the switch position and combination function at will, does not need to punch holes for wiring, and is easy to use; the self-powered wireless switch using the electromagnetic induction power generation device can be used for new installation, and can also directly replace the original ordinary switch, which has good social and economic benefits; in a vibration environment, the self-powered wireless sensor using the electromagnetic induction power generation device can be maintenance-free and self-sustaining, which is convenient for integration with various monitoring systems, and has considerable social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the electromagnetic induction power generation device of the present invention.

[0015] Figure 2 It is an exploded view of the electromagnetic induction power generation device of the present invention.

[0016] Figure 3 It is a structural schematic diagram of a stationary module in the electromagnetic induction power generation device of the present invention.

[0017] Figure 4 It is a schematic diagram of the structure of the U-shaped magnetic core in the stationary module.

[0018] Figure 5 It is a schematic diagram of the structure of the static magnetic core in the static module.

[0019] Figure 6 It is a schematic diagram of the structure of the coil skeleton in the stationary module.

[0020] Figure 7 It is a cross-sectional diagram of the components in the stationary module.

[0021] Figure 8 It is a structural schematic diagram of the dynamic module of the electromagnetic induction power generation device of the present invention.

[0022] Fig. 9 It is a schematic diagram of the working principle of the electromagnetic induction power generation device of the present invention. DETAILED DESCRIPTION

[0023] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can imagine various implementation methods of the electromagnetic induction power generation device of the present invention. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction of the technical solution of the present invention.

[0024] Combination Figure 1 The electromagnetic induction power generation device of the present invention comprises an E-shaped magnetic core as a static module 1 and a U-shaped magnetic circuit as a dynamic module 2. The static module 1 is simply assembled from a U-shaped magnetic core 10 that can be formed once and a static magnetic core 11 with an outer coil 13. The dynamic module 2 is also simply assembled from a dynamic magnetic core 1 21 and a dynamic magnetic core 2 22 that can be formed once, in conjunction with a permanent magnet 20 and a reed 24. All structures are easy to process, simple to manufacture, reliable in performance, and have obvious cost advantages.

[0025] Combination Figure 2 and Figure 3 The static module 1 includes a U-shaped magnetic core 10, a static magnetic core 11 wrapped with a coil 13, the coil 13 and the static magnetic core 11 are located inside the U-shaped magnetic core 10, and the skeleton 12 is used to support the static magnetic core 11 and the coil 13. The static module 1 has a compact structure and is tightly matched.

[0026] In order to facilitate the assembly and disassembly of each component, Figure 4 The U-shaped magnetic core 10 includes a first free end 10-1, a second free end 10-2 and an intermediate connecting portion 10-3, the intermediate connecting portion 10-3 is provided with a magnetic core jack 101, and two sides of the intermediate connecting portion 10-3 are also provided with a card slot 100, and the end of the second free end 10-2 is provided with a card slot 2 102. The entire U-shaped magnetic core 10 is formed by one-time stamping, which is simple and convenient to process and has high reliability;

[0027] Combination Figure 5 The two ends of the static magnetic core 11 are respectively provided with a first plug head 110 and a second plug head 111. The static magnetic core 11 can be formed by one-time stamping or by wire cutting, which is flexible and diverse in processing.

[0028] Combination Figure 6 The skeleton 12 is made of high temperature resistant material by injection molding. The inner cavity of the skeleton 12 is used to place the static magnetic core 11. The rear end of the skeleton 12 is provided with a buckle 120, which cooperates with the slot 100 on both sides of the middle connecting part 10-3; the front end of the skeleton 12 is provided with a limiting component 121 and two pins 122. The limiting component 121 cooperates with the shoulder of the pin head 111 to limit the position of the static magnetic core 11 in the skeleton 12. The two pins 122 are respectively connected to the two connectors of the coil 13 as the lead-out connectors of the coil 13.

[0029] The close matching relationship between the components of the stationary module 1 is as follows Figure 7 As shown. The static magnetic core 11 is placed in the frame 12, and the coil 13 is wrapped around the frame 12; the pin head 110 of the static magnetic core 11 is placed in the magnetic core jack 101, and the slot 100 located at the middle connection part 10-3 of the U-shaped magnetic core 10 cooperates with the buckle 120 at the rear end of the frame 12, so that the frame 12 and the U-shaped magnetic core 10 are relatively fixed; the two pins 122 cooperate with the two slots 102 set at the second free end 10-2 to limit the U-shaped magnetic core 10 from shaking in its width direction. Under the cooperation of the slot 100, the slot 2 102, the buckle 120 and the pin 122, the U-shaped magnetic core 10, the frame 12 and the static magnetic core 11 are tightly matched.

[0030] During the construction of the magnetic circuit, the pin head 110 of the static magnetic core 11 is tightly fixed in the magnetic core jack 101, and the pin head 111 extends outward from the skeleton 12 to the inside of the dynamic module 2. The shoulder of the pin head 111 cooperates with the limit component 121 to limit the forward and backward sliding of the static magnetic core 11. During the manufacturing process, the static magnetic core 11 is inserted into the skeleton 12 from the pin head 111 end. The coil 13 can be first wound on the skeleton 12 and then placed in the static magnetic core 11, or the static magnetic core 11 can be first placed in the skeleton 12 and then the coil 13 is wound on the skeleton 12. Finally, the whole is inserted into the U-shaped magnetic core 10 in the form of matching the pin 122 with the slot 102, and finally assembled into an E-shaped magnetic core as the static module 1. After the assembly is completed, the U-shaped magnetic core 10 and the static magnetic core 11 together constitute the E-shaped magnetic core of the static module 1, which is used to cooperate with the U-shaped magnetic circuit of the dynamic module 2. This assembly method can not only ensure the close fit of the components of the stationary module 1, but also significantly improve the assembly yield rate.

[0031] Combination Figure 8, the dynamic module 2 is composed of a permanent magnet 20, a dynamic core 1 21 and a dynamic core 22, a reed fixing component, a reed 24 and a rivet 25. The permanent magnet 20 is clamped between the dynamic core 1 21 and the dynamic core 2 22 to form a U-shaped magnetic circuit. The dynamic core 1 21 and the dynamic core 2 22 are not only used to fix the permanent magnet 20, but also to construct the U-shaped magnetic circuit of the dynamic module 2 together with the permanent magnet 20. When the thickness of the reed 24 is very thin, it is not only strong in rigidity but also good in elasticity. It can gather external mechanical energy and release it in a concentrated manner when the mechanical energy reaches a certain limit. The reed 24 is fixed to the U-shaped magnetic circuit through a fixing component. For example, the reed 24 is fixed between the reed fixing block 23, and the two are also clamped between the dynamic core 1 21 and the dynamic core 2 22 as a whole. Similarly, the permanent magnet 20 is also confined in the reed fixing block 23. The dynamic magnetic core 1 21 and the dynamic magnetic core 2 22 form a certain gap between their end faces while clamping the permanent magnet 20, i.e., a U-shaped magnetic circuit opening, and the latch head 2 111 of the static magnetic core 11 extends outward from the skeleton 12 directly to the inside of the U-shaped magnetic circuit opening. At this time, the latch head 2 111 is located between the dynamic magnetic core 1 21 and the dynamic magnetic core 2 22, the dynamic magnetic core 1 21 is located between the static magnetic core 11 and the first free end 10-1, and the dynamic magnetic core 2 22 is located between the static magnetic core 11 and the second free end 10-2.

[0032] When working, the static magnetic core 11 will alternately contact with the dynamic magnetic core 1 21 and the dynamic magnetic core 2 22, the dynamic magnetic core 1 21 will alternately contact with the first free end 10-1 and the static magnetic core 11, and the dynamic magnetic core 2 22 will alternately contact with the static magnetic core 11 and the second free end 10-2, that is, the U-shaped magnetic circuit of the dynamic module 2 reciprocates between the E-shaped magnetic cores of the static module 1, and the permanent magnet 20 applies an alternating magnetic field to the static magnetic core 11, and the coil 13 wound on the skeleton 12 generates a voltage output based on the principle of electromagnetic induction, thereby realizing the self-power supply of the wireless switch or the wireless sensor in the vibration environment. The static magnetic core can be a static magnetic core, and the dynamic magnetic core can be a square magnetic core.

[0033] Combination Fig. 9 The power generation process of the electromagnetic induction power generation device of the present invention is further described in detail as follows:

[0034] Taking the permanent magnet 20 with N pole at the upper end and S pole at the lower end as an example, in the two working modes of pressing or toggling and random vibration, as Fig. 9As shown in (a), when the dynamic module 2 moves upward, the static magnetic core 11 contacts the dynamic magnetic core 22, and the dynamic magnetic core 1 21 contacts the first free end 10-1 of the U-shaped magnetic core 10, thereby forming a closed loop between the permanent magnet 20, the dynamic magnetic core 1 21, the first free end 10-1 of the U-shaped magnetic core 10, the second free end 10-2 of the U-shaped magnetic core 10, the static magnetic core 11 and the dynamic magnetic core 2 22, and the magnetic lines of force are in the counterclockwise direction, and the magnetic lines of force are in the static magnetic core 11 in the horizontal direction to the right; as shown in Fig. 9 As shown in (b), when the dynamic module 2 moves downward, the static magnetic core 11 contacts the dynamic magnetic core 1 21, and the dynamic magnetic core 2 22 contacts the second free end 10-2 of the U-shaped magnetic core 10, thereby forming a closed loop between the permanent magnet 20, the dynamic magnetic core 1 21, the static magnetic core 11, the second free end 10-2 of the U-shaped magnetic core 10, and the dynamic magnetic core 2 22. The magnetic lines of force are also in the counterclockwise direction, while the magnetic lines of force in the static magnetic core 11 are in the horizontal direction to the left; during the entire reciprocating motion of the dynamic module 2, the direction of the magnetic field applied by the permanent magnet 20 to the static magnetic core 11 will alternate between horizontal right and horizontal left, effectively applying the permanent magnet 20 to the static magnetic core 11 with almost the maximum variable magnetic field. Here, there is a variable magnetic field for the coil 13 to sense. According to the principle of electromagnetic induction, in order to obtain efficient voltage output, in addition to the variable magnetic field, the problem of the change time needs to be further considered. The role of the reed 24, which is not only strong in rigidity but also good in elasticity, and can gather external mechanical energy to a certain extent and release it in a concentrated manner, is thus reflected. Each time the end of the reed 24 is pressed or toggled, the position state of the dynamic module 2 will change only when the mechanical energy is gathered to overcome the adsorption magnetic force between the static module 1 and the dynamic module 2, thereby effectively reducing the change time of the magnetic field each time it works, and ultimately ensuring that the coil 13 wound on the frame 12 generates a sufficiently large voltage output according to the principle of electromagnetic induction.

[0035] The present invention has a pressing or toggling working mode and a random vibration working mode, and is convenient for integration with a wireless switch or a wireless sensor in a vibration environment to help it realize self-power supply.

[0036] In the pressing or toggling working mode, the U-shaped magnetic circuit of the dynamic module reciprocates in the E-shaped magnetic core of the static module by pressing or toggling the end of the reed, and the coil senses the changing magnetic field in the static magnetic core, converts mechanical energy into electrical energy, and further provides power for the wireless switch, thereby realizing self-powering of the wireless switch; in the random vibration mode, the U-shaped magnetic circuit of the dynamic module reciprocates in the E-shaped magnetic core of the static module as it vibrates, and the coil senses the changing magnetic field in the static magnetic core, converts mechanical energy into electrical energy, and further provides power for the wireless sensor in the vibration environment, thereby realizing self-powering of the wireless sensor.

[0037] The electromagnetic induction power generation device of the present invention has a simple structure, is safe and reliable, and has low cost. It is easy to integrate with various power-demanding equipment, is suitable for many application fields, and has broad market prospects. The electromagnetic induction power generation device of the present invention is convenient for constructing various self-powered wireless switches to control the opening and closing of electrical products, such as lighting products, televisions, refrigerators, and fans. The self-powered wireless application of the present invention does not require the use of chemical batteries, thus avoiding environmental pollution and waste, does not require wiring, is conducive to cost savings, and is easy to layout and install, and can be widely promoted and applied in production and life.

Claims

1. An electromagnetic induction power generation device, characterized in that: It includes a static module (1) and a dynamic module (2); The static module (1) comprises a U-shaped magnetic core (10) and a static magnetic core (11) with an outer coil (13), the coil (13) and the static magnetic core (11) being located inside the U-shaped magnetic core (10), and the U-shaped magnetic core (10) and the static magnetic core (11) forming an E-shaped magnetic core; The dynamic module (2) comprises a permanent magnet (20), a dynamic magnetic core 1 (21), a dynamic magnetic core 2 (22), and a reed (24); the permanent magnet (20) is located between the dynamic magnetic core 1 (21) and the dynamic magnetic core 2 (22) to form a U-shaped magnetic circuit, and the reed (24) is fixed to the U-shaped magnetic circuit; the reed (24) is fixed between the reed fixing blocks (23), and the reed (24) and the reed fixing blocks (23) are clamped as a whole between the dynamic magnetic core 1 (21) and the dynamic magnetic core 2 (22); The front end of the static magnetic core (11) extends from the inside of the U-shaped magnetic core (10) to between the dynamic magnetic core 1 (21) and the dynamic magnetic core 2 (22); the dynamic magnetic core 1 (21) extends between the first free end (10-1) of the U-shaped magnetic core and the static magnetic core (11); the dynamic magnetic core 2 (22) extends between the second free end (10-2) of the U-shaped magnetic core and the static magnetic core (11); the middle connecting portion (10-3) of the U-shaped magnetic core (10) is provided with a magnetic core plug hole (101); the rear end of the static magnetic core (11) is provided with a plug head 1 (110), and the plug head 1 (110) is plugged into the magnetic core plug hole (101); the static magnetic core (11) is fixed by a frame (12), and the coil (13) is wound around the frame (12); The middle connecting portion (10-3) of the U-shaped magnetic core (10) is provided with a first card slot (100), and the rear end of the frame (12) is provided with a buckle (120), and the first card slot (100) cooperates with the buckle (120); the front end of the static magnetic core (11) is provided with a second plug head (111), and the front end of the frame (12) is provided with a limiting component (121) and two plug pins (122); the limiting component (121) cooperates with a shoulder of the second plug head (111), and the two plug pins (122) serve as lead-out connectors of the coil (13); the second plug head (111) extends between the first dynamic magnetic core (21) and the second dynamic magnetic core (22).

2. The electromagnetic induction power generation device according to claim 1, characterized in that: The second free end (10-2) is provided with two second card slots (102), and the two insertion pins (122) are respectively fixed in the two second card slots (102).

3. The electromagnetic induction power generation device according to claim 1, characterized in that: The main body of the static magnetic core (11) is a strip-shaped structure.

4. The electromagnetic induction power generation device according to claim 1, characterized in that: The reed (24) is fixed between the dynamic magnetic core 1 (21) and the dynamic magnetic core 2 (22) via a fixing component.

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