EP-4742518-A1 - SELF-RESETTING MAGNETIC SUSPENSION POWER GENERATOR, AND POWER GENERATION METHOD, RESETTING METHOD AND USE THEREOF

EP4742518A1EP 4742518 A1EP4742518 A1EP 4742518A1EP-4742518-A1

Abstract

The present invention provides a self-resetting magnetic suspension power generator, and a power generation method, resetting method and use thereof. The self-resetting magnetic suspension power generator comprises a hollow coil, a magnetic suspension assembly and a housing; the housing comprises a top cover, a bottom cover, and a power generation cavity defined by the top cover and the bottom cover; the hollow coil is accommodated in the power generation cavity; the top cover is provided with a driving hole; the driving hole is communicated with a hollow channel defined by the hollow coil to form a magnetic suspension channel; when stressed or pressed, the magnetic suspension assembly moves along the magnetic suspension channel, so that a change of magnetic flux of magnetic induction lines of the hollow coil is formed to generate electric energy; the magnetic suspension assembly and the top cover attract each other under a magnetic attraction effect so that the magnetic suspension assembly is suspended in the magnetic suspension channel, and the magnetic suspension assembly is reset when the stress is removed, so as to re-form the change of the magnetic flux of the magnetic induction lines of the hollow coil during the resetting to generate electric energy.

Inventors

LIU, Yuanfang

Assignees

GUANGDONG EBELONG INTELLIGENT TECHNOLOGY CO., LTD

Dates

Publication Date: 20260513
Application Date: 20240419

Claims (20)

A self-resetting suspended magnetic generator, characterized by comprising: a hollow coil, wherein the hollow coil defines a hollow channel; a suspended magnetic assembly, wherein the suspended magnetic assembly comprises a driving member and a return member, at least one of the driving member and the return member is a permanent magnet; and a shell, wherein the shell includes a top cover, a bottom cover and a power generation cavity defined by the top cover and the bottom cover, the hollow coil is accommodated in the power generation cavity, wherein the top cover has a driving hole connected to the power generation cavity, wherein when the hollow coil is accommodated in the power generation cavity, the driving hole is connected to the hollow channel to form a suspended magnetic channel, wherein the driving member extends from the driving hole of the top cover into the suspended magnetic channel, wherein the return member is arranged in the suspended magnetic channel, and is magnetically attracted to the top cover and maintained in an initial position when at least one of the driving member and the return member is a permanent magnet, wherein when the driving member is driven by force to move the return member along the suspended magnetic channel, a change in the magnetic flux of the hollow coil is formed to generate electric energy, and the corresponding return member is suspended in the suspended magnetic channel under the magnetic attraction of the top cover, so that it returns to the initial position when the force on the driving member is removed, thereby forming a change in the magnetic flux of the hollow coil again to generate electric energy.
The self-resetting suspended magnetic generator according to claim 1, wherein the top cover further includes a driving tube extending from the periphery of the driving hole toward the bottom cover, wherein one end of the driving tube where the driving hole is located is the top end of the driving tube, and the other end of the driving tube is the bottom end of the driving tube, wherein the driving member extends into the driving tube from the top end of the driving tube, and drives the return member located at the bottom end of the driving tube to move in a direction away from the top cover under a force-driven state, wherein when the force on the driving member is removed, the return member is attracted to the top cover under the action of magnetic attraction and moves in the direction of the top cover, thereby being abutted against the bottom end of the driving tube.
The self-resetting suspended magnetic generator according to claim 1, wherein the bottom cover is a closed cover, wherein the movement stroke of the suspended magnetic component satisfies that the magnetic attraction force between the return member and the top cover is greater than the magnetic attraction force between the return member and the bottom cover.
The self-resetting suspended magnetic generator according to claim 1, wherein the bottom cover has a bottom opening connected to the power generation chamber, and wherein the movement stroke of the suspended magnetic component satisfies that the magnetic attraction force between the return member and the top cover is greater than the magnetic attraction force between the return member and the bottom cover.
The self-resetting suspended magnetic generator according to claim 4, wherein the projection of the driving hole toward the bottom cover is located in the bottom opening.
The self-resetting suspended magnetic generator according to claim 1, wherein the return member is a permanent magnet.
The self-resetting suspended magnetic generator according to claim 6, wherein the driving member is a non-magnetic conductive body and abuts against the return member.
The self-resetting magnetic suspension generator according to claim 1, wherein the return member and the drive member are both permanent magnets.
The self-resetting suspended magnetic generator according to claim 8, wherein the return member and the drive member are an integrated structure.
According to the self-resetting suspended magnetic generator of claim 1, the driving member is a permanent magnet, and the return member is a magnetic conductor to conduct the magnetic force of the driving member to ensure the magnetic attraction with the top cover.
According to the self-resetting suspended magnetic generator according to claim 1 or 2, the suspended magnetic assembly further comprises a force storage member, wherein the force storage member accumulates potential energy and forms a force displacement of the driving member before the driving member drives the return member under force and overcomes the magnetic attraction between the return member and the top cover.
The self-resetting suspended magnetic generator according to claim 11, wherein the force storage member is arranged between the driving member and the return member.
The self-resetting suspended magnetic generator according to claim 11, wherein the force storage member is arranged at an end of the driving member away from the return member.
According to the self-resetting suspended magnetic generator of claim 12, one end of the driving member close to the return member has a driving groove recessed toward the other end of the driving member, and the force storage member is accommodated in the driving groove and presses the return member.
The self-resetting suspended magnetic generator according to claim 1 or 2, wherein the hollow coil is arranged in a ring shape.
The self-resetting suspended magnetic generator according to claim 15, wherein the driving member is configured as a cylinder or a quasi-cylindrical body, and the return member is configured as a disc.
The self-resetting suspended magnetic generator according to claim 16, wherein the diameter of the return member is larger than the aperture of the drive hole.
The self-resetting suspended magnetic generator according to claim 16, wherein the end of the driving member away from the return member is configured to be tapered to facilitate pressing the self-resetting suspended magnetic generator.
The self-resetting suspended magnetic generator according to claim 1 or 2, wherein the hollow coil is configured to be rectangular or irregular in shape.
According to the self-resetting suspended magnetic generator of claim 1, the top cover includes a first magnetic wall and a second magnetic wall and a third magnetic wall extending downward from the first magnetic wall, and the center of the first magnetic wall is hollowed out to form the driving hole.

Description

Technical Field The present invention relates to the field of self-power generation, and in particular to a self-resetting magnetic suspension power generator, as well as its power generation method, resetting method and application. Background Art With the development of science and technology and social progress, more and more electrical equipment has entered people's lives, and the number of controllers used to control various types of electrical equipment has increased correspondingly. For example, traditional switch controllers used to control lamp switches are mostly wired switches, which are inconvenient for wiring, increase the installation cost of the corresponding electrical equipment, and affect the aesthetic appearance of the corresponding environment. With the development of science and technology, wireless control methods have increasingly appeared in people's lives, such as remote controls and other wireless control devices. People have become accustomed to using remote controls and other wireless control devices to control corresponding electrical equipment. However, most of the existing wireless control devices such as remote controls are powered by batteries. As a result, under the current trend of the popularity of wireless control devices, the usage of batteries has also increased significantly. In many families, various remote controls are scattered to control various electrical equipment, and each remote control needs to be equipped with corresponding batteries. Moreover, after a certain period of use, the batteries need to be replaced in batches, which additionally increases the cost of battery preparation. At the same time, driven by the current environmental protection concepts and policies, the large-scale additional use of batteries is contrary to environmental protection concepts and policies. Additionally, the replacement of batteries causes resource waste and environmental pollution, which is inconsistent with the concepts of green, environmental protection and low carbon. At present, passive technology is a recognized solution to solve the problem of battery consumption and waste in such control devices. For example, the Chinese Invention Patent with the announcement number CN104901505B discloses a conversion structure for converting kinetic energy into electrical energy and wireless electronic products. However, these micro-generator structures have the problem of large volume and cannot meet the usage requirements of some smaller volumes, and also have extremely high manufacturing precision requirements. In this patent, due to the alternating impact of two magnetic conductive plates with the connecting plate, strong impact noise is generated. Moreover, this power generation method relying on the up and down impact of magnets on the magnetic conductive plates has little effect on the magnetic force generated by the coil, resulting in low power generation efficiency. Furthermore, in this structure, the magnet group needs to be fixedly connected with the elastic sheet, and external mechanical structures are relied on to maintain left-right balance. It is not a structure that can fix itself and maintain balance only by using its own magnetic force. If the balance is lost, the output energy will be unstable, so the structure is relatively complex. The magnetic pole switching type micro-generators in the existing passive technology are all bistable, and adopt a driving mode of N-S two magnetic pole switching. That is, they have two stable states: the N pole is adsorbed to the magnetic conductive plate and the S pole is adsorbed to the magnetic conductive plate. Electric energy is generated by using external force to switch between these two stable states, and one magnetic pole is always adsorbed to the magnetic conductive plate, resulting in huge impact noise during operation. When such a micro-generator is pressed, it has one stable state, and when it is pushed by an external force in the opposite direction, it has another stable state. If a monostable state is to be implemented, a special spring reset mechanism needs to be provided. In addition to occupying space and incurring costs, the spring reset mechanism also increases the reverse resistance when driving the micro-generator, so that the force required to press the micro-generator is doubled. If a new technology can eliminate the spring reset mechanism to remove the reverse resistance of the spring and improve the pressing feel of the micro-generator, then under the same driving force, the power generation power of the micro-generator can be significantly improved. In the Chinese Invention Patent with the announcement number CN112290739B, a concept of a monostable micro-generator without a reset spring is proposed, but the automatic reset effect of this structure is poor, and it is not a truly fully automatic reset micro-generator. In practical applications, if the movement stroke is greater than 0.5 mm, an auxiliary reset