Vibration power generation device

Abstract

The vibration power generation device comprises a cylinder and a magnetic body, a coil is wound around the outside of the cylinder, the interior of the cylinder is a closed space, a first end face and a second end face which are opposite to each other are arranged in the cylinder, and the first end face is made of amorphous metal; the magnetic body is located in the cylinder body, the magnetic body comprises a first magnet body, the magnetic body reciprocates between the first end face and the second end face under the action of external vibration, and then induced electromotive force is generated in a coil wound around the outer portion of the cylinder body. The first curved surface is arranged on the surface, in contact with the first end surface, of the magnetic body, and the first curved surface is in point contact with the first end surface. According to the vibration power generation device, the first curved surface and the first end face are designed to be in point contact when colliding, meanwhile, the first end face is made of the amorphous metal, the energy loss of the magnetic body in the collision and rebounding process of the first end face is reduced, and the energy utilization rate of the vibration power generation device is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vibration power generation, in particular to a vibration power generation device. BACKGROUND

[0002] A vibration power generation device, also known as a vibration energy harvester (VEH), is a device that converts environmental vibration energy into electrical energy. The working principle is as follows: by capturing environmental vibrations, a capturing mechanism composed of a mass block and an elastic element is used to amplify these vibrations, and a conversion mechanism (such as electromagnetic induction or piezoelectric effect) is used to convert the mechanical energy of the vibrations into electrical energy, which is finally output through an external circuit to provide power for electronic devices.

[0003] The prior art has certain defects in the design of vibration power generation devices, especially in terms of energy utilization efficiency. According to the technology disclosed in patent CN108370209A, although the device can convert the vibrations generated during tire rotation into electrical energy through a spring-suspended movable magnet and a fixed coil, the movable magnet relies entirely on the spring for suspension and movement, resulting in friction between the fixed magnet and the spring. This friction significantly dissipates the elastic potential energy of the spring, thereby reducing the energy conversion efficiency and making the entire vibration power generation device less efficient in energy utilization. UTILITY MODEL CONTENT

[0004] The present application aims to at least partially solve one of the above technical problems in the prior art. To this end, the first aspect of the present application provides a vibration power generation device that can improve the energy utilization rate of the vibration power generation device.

[0005] The vibration power generation device according to the first aspect of the present application comprises:

[0006] a cylinder, the cylinder being externally wound with a coil, the cylinder having a closed space inside, the cylinder having a first end face and a second end face opposite to each other inside, the first end face being made of amorphous metal;

[0007] a magnetic body, the magnetic body being located inside the cylinder, the magnetic body being used to make reciprocating motion between the first end face and the second end face under the action of external vibration, the magnetic body comprising a first magnet;

[0008] the magnetic body has a first curved surface on the side in contact with the first end face, the first curved surface being in point contact with the first end face when in contact.

[0009] Based on the technical scheme, the application has the following beneficial effects: the vibration power generation device provided by the application comprises a cylinder and a magnetic body, the cylinder is externally wound with a coil, the inside of the cylinder is a closed space, the inside of the cylinder is provided with opposite first and second end faces, and the first end face is made of amorphous metal; the magnetic body is located in the inside of the cylinder, the magnetic body reciprocates between the first and second end faces under the action of external vibration, and then an induced electromotive force is generated in the coil externally wound on the cylinder. The application is provided with a first curved surface on the side of the magnetic body in contact with the first end face, and the first curved surface is in point contact with the first end face when the first curved surface is in contact with the first end face. In the application, the first curved surface is designed to be in point contact when colliding with the first end face, and the first end face is made of amorphous metal, so that the energy loss of the magnetic body in the process of colliding and rebounding with the first end face is reduced, and the energy utilization rate of the vibration power generation device is improved.

[0010] According to the vibration power generation device of the first aspect of the application, the second end face is made of amorphous metal or made of a second magnet, and the magnetism of the second magnet repels the magnetism of the first magnet.

[0011] According to the vibration power generation device of the first aspect of the application, the side of the magnetic body in contact with the second end face is provided with a second curved surface, and the second curved surface is in point contact with the second end face when the second curved surface is in contact with the second end face.

[0012] According to the vibration power generation device of the first aspect of the application, an impact part is formed between the first curved surface and the first magnet.

[0013] According to the vibration power generation device of the first aspect of the application, the first magnet is located between the first curved surface and the second curved surface, and an impact part is formed between the second curved surface and the first magnet.

[0014] According to the vibration power generation device of the first aspect of the application, the impact part is made of hard material.

[0015] According to the vibration power generation device of the first aspect of the application, a gasket is arranged between the first magnet and the impact part.

[0016] According to the vibration power generation device of the first aspect of the application, the inside of the cylinder is a vacuum closed space.

[0017] According to the vibration power generation device of the first aspect of the application, the cylinder is further provided with a first end cover and a second end cover, a gasket is arranged between the first end cover and the first end face, and a gasket is arranged between the second end cover and the second end face.

[0018] According to the vibration power generation device of the first aspect of the application, the magnetic body is in a spherical or shuttle shape.

[0019] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those having ordinary skill in the art upon examination of the following or can be learned from practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0021] Figure 1 A sectional view of the vibration power generation device in the first aspect of the present application;

[0022] Figure 2 A sectional view of the vibration power generation device in the first aspect of the present application;

[0023] Figure 3 A structural schematic diagram of the magnetic body in the second aspect of the present application;

[0024] Figure 4 A sectional view of the vibration power generation device in the second aspect of the present application;

[0025] Figure 5 A sectional view of the vibration power generation device in the second aspect of the present application;

[0026] Figure 6 A structural schematic diagram of the magnetic body in the third aspect of the present application;

[0027] Figure 7 A sectional view of the vibration power generation device in the third aspect of the present application;

[0028] Figure 8 A sectional view of the vibration power generation device in the third aspect of the present application;

[0029] Figure 9 A sectional view of the vibration power generation device in the fourth aspect of the present application;

[0030] Figure 10 A sectional view of the vibration power generation device in the fourth aspect of the present application;

[0031] Figure 11 A sectional view of the vibration power generation device in the fifth aspect of the present application;

[0032] Figure 12 A sectional view of the vibration power generation device in the fifth aspect of the present application;

[0033] Figure 13 A cross-sectional view of a vibration power generation device according to an embodiment of the sixth aspect of the present application;

[0034] Figure 14 A cross-sectional view of a vibration power generation device according to an embodiment of the sixth aspect of the present application;

[0035] Reference Signs:

[0036] Cylinder 100, first end face 110, second end face 120, second magnet 121, first end cover 130, second end cover 140, coil 200, magnetic body 300, first curved surface 310, second curved surface 320, impact portion 330, first magnet 340, gasket 400. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0038] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0039] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. A person of ordinary skill in the art can understand the specific meaning of these terms in the present application according to the specific situation.

[0040] In addition, the terms "mount", "set", "provided with", "connected", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. A person of ordinary skill in the art can understand the specific meaning of the above-mentioned terms in the present application according to the specific situation.

[0041] In addition, the terms "first", "second", and the like are mainly used to distinguish different devices, elements or components (the specific types and configurations can be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0042] The technical solutions of the present application will be further described below in combination with embodiments and drawings.

[0043] The technical solutions of the present application will be further described below in combination with embodiments and drawings.

[0044] Reference Figure 1 The first aspect embodiment of the present application provides a vibration power generation device, which can improve the energy utilization rate of the vibration power generation device.

[0045] Reference Figure 1 and Figure 2 The vibration power generation device comprises a cylinder body 100, a coil 200 and a magnetic body 300, wherein the inside of the cylinder body 100 is a closed space, the inside of the cylinder body 100 is provided with opposite first and second end faces 110 and 120, the first end face 110 is made of amorphous metal; the magnetic body 300 is located inside the cylinder body 100, and the magnetic body 300 is used to make reciprocating motion between the first and second end faces 110 and 120 under the action of external vibration. One side of the magnetic body 300 in contact with the first end face 110 is provided with a first curved surface 310, and the first curved surface 310 is in point contact with the first end face 110 when in contact.

[0046] It should be noted that the cylinder body 100 is in a cylindrical shape, and the first and second end faces 110 and 120 are the upper and lower end faces inside the cylinder body 100. The inside of the cylinder body 100 is a closed space, and the magnetic body 300 is located inside the cylinder body 100 and can make reciprocating motion between the first and second end faces 110 and 120 of the cylinder body 100 under the action of external vibration.

[0047] Specifically, the magnetic body 300 moves under the action of external vibration, bounces off the first end face 110 after hitting the first end face 110, and moves towards the second end face 120, bounces off the second end face 120 after hitting the second end face 120, and continues to move towards the first end face 110. In this way, the external vibration is collected as the reciprocating motion of the magnetic body 300 between the first and second end faces 110 and 120 inside the cylinder body 100.

[0048] It can be understood that the external vibration can be various vibrations from daily activities and industrial processes, for example, walking, running, jumping and the like can generate vibrations in the wearable device; a car, a train, an airplane and the like generate vibrations during operation; machines, pumps, fans and compressors and the like in a factory generate continuous vibrations during operation, etc. After the vibration power generation device is installed on the above-mentioned vehicles, wearable devices or mechanical equipment, the vibration generated by the above-mentioned devices can drive the movement of the magnetic body 300 inside the cylinder 100, providing driving force for the reciprocating movement of the magnetic body 300 between the first end face 110 and the second end face 120.

[0049] It can be understood that the principle of driving the power generation device in the present application is electromagnetic induction power generation. During the reciprocating movement of the magnetic body 300 in the cylinder 100, the magnetic body 300 makes continuous relative movement with respect to the coil 200 wound outside the cylinder 100. According to Faraday's law of electromagnetic induction, the relative movement of the magnetic body 300 with respect to the coil 200 will generate an induced electromotive force (voltage) in the coil 200, thereby realizing the generation of electric energy.

[0050] It should be noted that the first end face 110 in the present application is made of amorphous metal, which is also called metallic glass. It is a special metal material, whose atomic arrangement does not have the long-range ordered crystal structure of traditional metals, but presents a random arrangement similar to glass. Compared with other conventional materials, amorphous metal can better convert the kinetic energy of the magnetic body 300 into elastic potential energy when it is impacted, and then convert it back into the kinetic energy of the magnetic body 300 again in an instant.

[0051] It can be understood that during the reciprocating movement of the magnetic body 300 between the first end face 110 and the second end face 120 inside the cylinder 100, when the magnetic body 300 contacts the first end face 110 made of amorphous metal, it is quickly bounced back by the first end face 110, changes the direction of movement and continues to impact the second end face 120. By using amorphous metal to make the first end face 110, the present application reduces the kinetic energy loss during the contact between the magnetic body 300 and the first end face 110, so that the magnetic body 300 continues to move towards the second end face 120 with higher kinetic energy, i.e. with higher speed after bouncing back, and finally improves the frequency of the reciprocating movement of the magnetic body 300 in the cylinder 100.

[0052] In summary, the first end face 110 made of amorphous metal can reduce the energy loss generated during the impact and rebound of the magnetic body 300, and improve the energy utilization rate of the vibration power generation device; on the other hand, it can improve the frequency of the reciprocating movement of the magnetic body 300 in the cylinder 100, and improve the power generation efficiency of the vibration power generation device.

[0053] Further, reference is made to Figure 1, the side of the magnetic body 300 in contact with the first end face 110 is the side of the magnetic body 300 that collides with the first end face 110 during the reciprocating movement of the magnetic body 300 in the cylinder body 100. The present application is provided with a first curved surface 310 on the side of the magnetic body 300 in contact with the first end face 110, and the first curved surface 310 is in point contact with the first end face 110. In the present application, the first curved surface 310 is provided so that the magnetic body 300 is in point contact with the first end face 110 when colliding with the first end face 110. Compared with surface contact, point contact can ensure stress concentration when the magnetic body 300 rebounds, making the rebound more rapid. At the same time, it can further reduce energy loss during the collision process and improve the energy conversion rate of the process of converting the kinetic energy of the magnetic body 300 into the elastic potential energy of the first end face 110 and then converting the elastic potential energy of the first end face 110 into the kinetic energy of the magnetic body 300.

[0054] Optionally, the first curved surface 310 is designed to be tangent to the first end face 110 when in contact to achieve point contact. It can be understood that the first curved surface 310 is tangent to the first end face 110 when in contact, which is the ideal shape. In actual processing, the first curved surface can also be designed in other shapes to achieve point contact when colliding with the first end face 110.

[0055] It should be noted that amorphous metals generally exhibit higher strength, better toughness, and better fatigue resistance than crystalline materials. Using amorphous metals as the material of the first end face 110 can meet the use requirements of high-frequency impact of the magnetic body 300 and prolong the service life of the vibration power generation device.

[0056] The second end face 120 is made of amorphous metal or made of a second magnet 121 whose magnetism is repulsive to the magnetism of the first magnet 340.

[0057] Optionally, referring to Figure 1 and Figure 2 , the second end face 120 is made of amorphous metal, and the side of the magnetic body 300 in contact with the second end face 120 is provided with a second curved surface 320 that is tangent to the second end face 120 when in contact. Similar to the collision process of the magnetic body 300 with the first end face 110, the magnetic body 300 is also in point contact with the second end face 120 when colliding with the second end face 120. Compared with surface contact, point contact can ensure stress concentration when the magnetic body 300 rebounds, making the rebound more rapid. At the same time, it can further reduce energy loss during the collision process and improve the energy conversion rate of the process of converting the kinetic energy of the magnetic body 300 into the elastic potential energy of the second end face 120 and then converting the elastic potential energy of the second end face 120 into the kinetic energy of the magnetic body 300.

[0058] Optionally, referring to Figure 3, the magnetic body 300 comprises a first magnet 340, the first magnet 340 is located between the first curved surface 310 and the second curved surface 320, the first curved surface 310 and the first magnet 340 are surrounded to form the impact part 330, and the second curved surface 320 and the second magnet 121 are also surrounded to form the impact part 330. It can be understood that the magnetic body 300 is a layered combination structure along the axis of the cylinder body 100, the first magnet 340 is located in the middle layer, the first magnet 340 is flanked by the impact part 330, and the first curved surface 310 and the second curved surface 320 are the outer surfaces of the two side impact parts 330 in contact with the first end surface 110 and the second end surface 120 respectively.

[0059] It can be understood that the magnetism of the magnetic body 300 is provided by the first magnet 340, and in the process of reciprocating movement of the magnetic body 300 in the cylinder body 100, the first magnet 340 moves relative to the coil 200 wound outside the cylinder body 100, thereby generating an induced electromotive force (voltage) in the coil 200, the induced electromotive force drives the flow of electrons to form an electric current, thereby realizing the generation of electric energy.

[0060] It can be understood that the impact part 330 can be made of non-magnetic material for contact and impact with the first end surface 110 and the second end surface 120, and the movement direction of the magnetic body 300 is changed by rebounding. Alternatively, the impact part 330 is made of hard material and has good wear resistance, which meets the use requirement of high-frequency impact of the impact part 330 with the first end surface 110 and the second end surface 120, and prolongs the service life of the vibration power generation device.

[0061] As an example, reference is made to Figure 1 and Figure 2 The magnetic body 300 is designed as a spherical shape, and at this time, the first curved surface 310 and the second curved surface 320 are hemispherical surfaces of the magnetic body 300. When the magnetic body 300 contacts and impacts with the first end surface 110 and the second end surface 120, the first curved surface 310 is tangent to and in point contact with the first end surface 110, and the second curved surface 320 is tangent to and in point contact with the second end surface 120. Through the point contact cooperation of the spherical surface and the amorphous metal, the kinetic energy loss of the magnetic body 300 is small when rebounding after collision, more kinetic energy is used for conversion into electric energy, and the energy utilization rate of the vibration power generation device is improved.

[0062] As an example, reference is made to Figure 4 and Figure 5 The magnetic body 300 is designed as a shuttle shape, and at this time, the first curved surface 310 and the second curved surface 320 are both circular arc surfaces, and the first magnet 340 is a cuboid located in the middle layer of the magnetic body 300. Similar to the spherical magnetic body 300, the shuttle-shaped magnetic body 300 is in point contact with the amorphous metal through the circular arc surface, so that the kinetic energy loss of the magnetic body 300 is small when rebounding after collision, more kinetic energy is used for conversion into electric energy, and the energy utilization rate of the vibration power generation device is improved.

[0063] Optionally, referring to Figure 6 to Figure 12 , the magnetic body 300 can also be designed as a flying saucer or other extended shape. It can be understood that, under the premise of ensuring that the first curved surface 310 is tangent to the first end surface 110 and the second curved surface 320 is tangent to the second end surface 120, the first curved surface 310 and the second curved surface 320 can be designed as any shape, which will not be exemplified here.

[0064] Referring to Figure 13 and Figure 14 , optionally, the second end surface 120 is made of a second magnet 121, the magnetism of the first magnet 340 repels the magnetism of the second magnet 121, and the first magnet 340 is arranged at one end of the magnetic body 300 in contact with the second end surface 120. It can be understood that when the magnetic body 300 approaches the second end surface 120, it is repelled by the second magnet 121 of the second end surface 120, and then changes the direction of movement to the direction of the first end surface 110. In this way, the magnetic body 300 completes the turning at the second end surface 120 by the repelling magnetism of the first magnet 340 and the second magnet 121, and still completes the turning by impact at the first end surface 110.

[0065] It can be understood that when the second end surface 120 is made of a second magnet 121, the magnetic body 300 has completed the turning before contacting the second end surface 120, so the magnetic body 300 will not collide with the second end surface 120. Therefore, the material of the second end surface 120 is not limited, and the second end surface 120 can be made of amorphous metal or other materials.

[0066] Further, referring to Figure 13 and Figure 14 , when the second end surface 120 is made of a second magnet 121, the magnetic body 300 is provided with a first magnet 340 at one end in contact with the second end surface 120, and still provided with a first curved surface 310 at the other end in contact with the first end surface 110. The first curved surface 310 and the first magnet 340 enclose an impact portion 330.

[0067] It can be understood that the impact portion 330 can be made of non-magnetic material. Optionally, the impact portion 330 is made of hard material, which has good wear resistance and meets the use requirements of high-frequency impact of the impact portion 330 with the first end surface 110 and the second end surface 120, prolonging the service life of the vibration power generation device.

[0068] It should be noted that when the first end surface 110 and the second end surface 120 are both made of the second magnet 121, the magnetic body 300 is diverted at the first end surface 110 and the second end surface 120 by the magnetic pole repulsion of the first magnet 340 and the second magnet 121. This arrangement has certain requirements for the axial distance of the cylinder body 100. When the axial size of the cylinder body 100 is too small, the first magnet 340 may be subjected to too strong magnetic pole repulsion of the second magnet 121 at both ends, thereby limiting the travel of the magnetic body 300 between the first end surface 110 and the second end surface 120. In summary, when the first end surface 110 and the second end surface 120 are both made of the second magnet 121, it is not conducive to the miniaturization of the vibration power generation device. In the technical solution protected by the present application, at least the first end surface 110 is made of amorphous metal, that is, at least the first end surface 110 is diverted by high-elastic impact to realize the movement of the magnetic body 300. Compared with the scheme of making the first end surface 110 and the second end surface 120 both of the second magnet 121, the present application can further reduce the axial size of the cylinder body 100, which is conducive to the miniaturization of the vibration power generation device as a whole.

[0069] Optionally, the closed space inside the cylinder body 100 is a vacuum closed space. After the air in the closed space is removed to achieve vacuum, the frictional resistance of the magnetic body 300 during movement in the cylinder body 100 can be reduced, thereby further reducing energy loss and improving energy utilization of the vibration power generation device.

[0070] Optionally, referring to Figure 1 to Figure 14 , the cylinder body 100 further comprises a first end cover 130 and a second end cover 140, which are respectively located at the two ends of the cylinder body 100 in the axial direction, and are used to seal the cylinder body 100 to form a sealed space. The first end surface 110 is tightly attached to the inner surface of the first end cover 130 inside the cylinder body 100, and the second end surface 120 is tightly attached to the inner surface of the second end cover 140 inside the cylinder body 100. Optionally, a gasket 400 is arranged between the first end cover 130 and the first end surface 110, and a gasket 400 is arranged between the second end cover 140 and the second end surface 120. Optionally, the gasket 400 is a shock-absorbing gasket, which avoids damage to the structure of the cylinder body 100 caused by the impact of the magnetic body 300 on the first end surface 110 and the second end surface 120.

[0071] Optionally, referring to Figure 3 and Figure 13 , a gasket 400 is arranged between the first magnet 340 and the impact portion 330, and the gasket 400 is a shock-absorbing gasket, which avoids the fragmentation of the magnetic body 300 during the process of reciprocating and violent impact between the first end surface 110 and the second end surface 120.

[0072] Optionally, sound-absorbing cotton is wrapped outside the coil 200, and sound-absorbing cotton is also wrapped outside the first end cover 130 and the second end cover 140, which can absorb the noise generated by the magnetic body 300 impacting the first end face 110 and the second end face 120, and reduce the noise generated by the vibration power generation device during operation.

[0073] Optionally, the cylinder 100 is made of self-lubricating material, such as polytetrafluoroethylene, etc., which further reduces the friction resistance of the magnetic body 300 reciprocating in the cylinder 100, and reduces energy loss.

[0074] In summary, the vibration power generation device provided by the present application has the following beneficial effects:

[0075] (1) The first end face 110 in the cylinder 100 is made of amorphous metal, which has less kinetic energy loss when rebounding after impacting the magnetic body 300, reduces energy loss, and improves the energy utilization rate of the vibration power generation device.

[0076] (2) The driving force required to trigger the magnetic body 300 to reciprocate in the cylinder 100 is small, and the axial size of the cylinder 100 is not high, which can be applied to various scenes where the size of the vibration power generation device is limited or the vibration source does not have strong vibration characteristics, such as daily walking or wrist and arm swinging, etc.

[0077] (3) The present application does not include complex mechanical units and springs inside, and has high structural reliability and simple maintenance.

[0078] The above describes the embodiments of the present application in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the present application.

Claims

1. A vibration power generation device, characterized by comprising: The application relates to a magnetic energy conversion device. The device comprises: a cylinder, the outside of which is wound with a coil, the inside of which is a closed space, the inside of which is provided with opposite first and second end faces, the first end face being made of amorphous metal; a magnetic body in the inside of the cylinder, the magnetic body being used to make reciprocating motion between the first and second end faces under the action of external vibration, the magnetic body comprising a first magnet; 2. The vibration power generation device according to claim 1, characterized by: the side of the magnetic body in contact with the first end face is provided with a first curved surface, the first curved surface being in point contact with the first end face.

3. The vibration power generation device according to claim 2, characterized by: the second end face is made of amorphous metal or a second magnet, the magnetism of the second magnet repelling the magnetism of the first magnet.

4. The vibration power generation device according to claim 1, characterized by: the side of the magnetic body in contact with the second end face is provided with a second curved surface, the second curved surface being in point contact with the second end face.

5. The vibration power generation device according to claim 3, characterized by: the first curved surface and the first magnet surround an impact part.

6. A vibration power generation device according to claim 4 or 5, characterized by: the first magnet is located between the first curved surface and the second curved surface, and the second curved surface and the first magnet surround an impact part.

7. The vibration power generation device according to claim 4 or 5, characterized by: the impact part is made of hard material.

8. The vibration power generation device according to claim 1, characterized by: a gasket is arranged between the first magnet and the impact part.

9. The vibration power generation device according to claim 1, characterized by: the inside of the cylinder is a closed space in vacuum.

10. The vibration power generation device according to claim 1, characterized by: the cylinder is further provided with a first end cover and a second end cover, a gasket is arranged between the first end cover and the first end face, and a gasket is arranged between the second end cover and the second end face. the magnetic body is spherical or shuttle-shaped.

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