A multi-layer electromagnetic energy harvesting device

Abstract

The present invention proposes an all-round multi-layer electromagnetic energy collection device, including a base and at least two energy collector groups, the energy collector group is fixedly connected to the base, the energy collector group includes at least two energy collectors arranged in sequence from top to bottom, the energy collectors are fixedly connected by at least two cantilever arms, a gap is provided between two adjacent energy collectors, the bottom of the energy collector at the bottom layer is fixedly connected to the base, at least two rectifier transmission modules are provided inside the base, and the energy collectors are correspondingly connected to the rectifier transmission modules. The present invention utilizes the fact that displacement and rolling can occur under relatively small forces, has high sensitivity, and reduces the loss of mechanical energy during the energy collection process. The present invention sets multiple energy collector groups. When the energy collection device is displaced or rolled by external forces, multiple energy collection groups can act simultaneously to convert the collected mechanical energy into electrical energy, effectively improving the efficiency of energy collection.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic energy collection, and in particular to an omnidirectional multi-layer electromagnetic energy collection device. Background Art

[0002] In recent years, electronic devices are rapidly developing towards miniaturization, wirelessness, and portability. At present, most electronic devices or devices are usually powered by traditional chemical batteries, which have disadvantages such as limited lifespan, the need for regular replacement, and high environmental pollution. In response to this demand, energy harvesting technology provides a feasible and effective solution to such problems. As one of the main environmental energy harvesting technologies, electromagnetic induction has the advantages of low internal resistance, large output current, good stability, and no need for additional driving power supply and functional materials. The existing electromagnetic energy harvesting structures mainly include linear motion type and rotational motion type. However, both can only capture and collect mechanical energy in the one-dimensional direction and two-dimensional plane direction of their own motion, and cannot be expanded to more directions, resulting in insufficient collection of environmental energy.

[0003] For example, patent application number CN111130297A discloses a fluid energy harvesting device comprising a housing with an elastic diaphragm connected within the housing. The elastic diaphragm serves as a conduit for fluid flow. A permanent magnet is mounted on the outer wall of the elastic diaphragm, and a coil is mounted corresponding to the permanent magnet. The permanent magnet is fixed to the outer wall of the elastic diaphragm to form magnetic flux lines for the coil to cut. The coil is fixed to the inner wall of the housing and connected to an external rectifier circuit via a wire. The rectifier circuit is connected to an energy storage circuit. This structure has the advantages of simplicity, easy maintenance, and long service life, but it cannot collect energy from multiple directions and has low energy conversion efficiency. Summary of the Invention

[0004] In response to the technical problems that existing electromagnetic energy harvesting devices are unable to collect mechanical energy in the environment from multiple directions and have low space utilization, the present invention proposes an all-round multi-layer electromagnetic energy harvesting device to realize the conversion of external multi-directional mechanical energy into electrical energy, thereby improving the output energy density.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention is implemented as follows: a full-dimensional multi-layer electromagnetic energy collection device, comprising a base and at least two energy collector groups, the energy collector group is fixedly connected to the base, the energy collector group includes at least two energy collectors arranged at intervals, the energy collectors are fixedly connected by at least two cantilever arms, a gap is provided between two adjacent energy collectors, the bottom of the energy collector of the lowest layer is fixedly connected to the base, at least two rectifier transmission modules are provided inside the base, and the energy collectors are correspondingly connected to the rectifier transmission modules.

[0006] The substrate is a polyhedral substrate, and each surface of the polyhedral substrate is provided with an energy collector group.

[0007] The energy collector comprises a shell, a permanent magnet and a coil. The permanent magnet and the coil are arranged inside the shell. The coil is fixedly arranged at the bottom of the shell, and an end cover is fixedly arranged on the top of the shell.

[0008] The shell consists of two upper cylinders and lower cylinders arranged in sequence from top to bottom. The upper cylinder and the lower cylinder are both hollow cylinders. The centers of the upper cylinder and the lower cylinder are arranged on the same straight line. The coil is fixedly arranged in the lower cylinder, and the permanent magnet is movably arranged in the upper cylinder.

[0009] The top surface of the coil and the bottom surface of the upper cylinder are arranged on the same horizontal plane.

[0010] The height of the upper cylinder is greater than the height of the permanent magnet.

[0011] The coil is connected to the rectification transmission module through at least two leads, and the leads are arranged in the grooves of the cantilever arm.

[0012] The method of use is: when subjected to external force, the energy collector group and the base are displaced and rolled, and the energy collector converts mechanical energy into electrical energy to achieve energy collection.

[0013] The energy collector converts mechanical energy into induced current in the following way: when the substrate rolls, the permanent magnet moves relative to the coil due to the force, generating induced current, thereby converting mechanical energy into electrical energy.

[0014] The present invention utilizes a polyhedral base to enable the energy collection device to displace and roll when subjected to a relatively small force, with high sensitivity, thereby reducing the loss of mechanical energy during the energy collection process. In the present invention, the permanent magnet is not squeezed in the energy collector, thereby avoiding the loss of mechanical energy due to friction. At the same time, the permanent magnet can slide freely in the energy collector and can move relative to the coil under the action of a relatively small external force, thereby effectively improving the efficiency of converting mechanical energy into electrical energy. The present invention provides a plurality of energy collector groups, and a plurality of energy collectors are provided in one energy collector group. When the energy collection device is displaced or rolled by an external force, the plurality of energy collectors can act simultaneously to convert the collected mechanical energy into electrical energy, thereby improving the efficiency of energy collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1It is a structural schematic diagram of the present invention.

[0017] Figure 2 Schematic diagram of the structure of the energy collector group of the present invention.

[0018] Figure 3 Schematic diagram of the structure of the energy harvester of the present invention.

[0019] Figure 4 Schematic diagram of the base structure of the present invention.

[0020] In the figure, 1 is a base, 2 is an energy collector group, 21 is an energy collector, 22 is a groove, 23 is a permanent magnet, 24 is a coil, and 25 is an end cover. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0022] like Figure 1 As shown, a full-scale multi-layer electromagnetic energy harvesting device includes a substrate 1 and at least two energy collector groups 2. The energy collector groups 2 are fixedly connected to the substrate 1. At least two rectifier transmission modules are provided inside the substrate 1. The energy collectors 21 are correspondingly connected to the rectifier transmission modules. The substrate 1 is a polyhedral substrate to ensure that the energy harvesting device can roll freely in the use environment. Each side of the polyhedral substrate is provided with an energy collector 21, so that the force applied acts on multiple energy collectors 21 simultaneously, effectively improving the energy harvesting efficiency of the device. The rectifier transmission module is mainly used to convert the induced current collected by the energy collector 21 into direct current.

[0023] The energy collector group 2 consists of two energy collectors 21 arranged in sequence from top to bottom. The energy collectors 21 are fixedly connected by two cantilever arms. A gap is provided between two adjacent energy collectors 21 to prevent interaction between the energy collectors 21 and affect the efficiency of electromagnetic energy collection. The bottom of the energy collector 21 on the bottom layer is fixedly connected to the base 1.

[0024] Specifically, the energy collector 21 includes a shell, a permanent magnet 23 and a coil 24. The permanent magnet 23 and the coil 24 are arranged in sequence inside the shell from top to bottom. The coil 24 is fixedly arranged at the bottom of the shell, and an end cap 25 is fixedly arranged on the top of the shell. Among them, the energy collector 21 is mainly used to convert the mechanical energy received by the device into an induced current. The shell is composed of two upper cylinders and lower cylinders arranged in sequence from top to bottom. The upper cylinder and the lower cylinder are both hollow cylinders. The centers of the upper cylinder and the lower cylinder are arranged on the same straight line. The coil 24 is fixedly arranged in the lower cylinder, the permanent magnet 23 is movably arranged in the upper cylinder, and the bottom of the lower cylinder is sealed. The upper cylinder is mainly used to provide a movable space for the permanent magnet 23 so that the permanent magnet 23 can move relative to the coil 24. The lower cylinder is mainly used to fix the coil 24 to prevent the coil 24 from moving during the rolling or displacement of the device, thereby affecting the energy collection efficiency. The radius of the upper cylinder is greater than that of the lower cylinder, and the diameter of the permanent magnet 23 is greater than the difference between the radii of the upper and lower cylinders. This prevents the permanent magnet 23 from escaping from the area where the coil 24 is located during movement, resulting in a waste of mechanical energy. The housing is primarily used to hold the coil 24 and the permanent magnet 23. The top surface of the coil 24 is arranged on the same horizontal plane as the bottom surface of the upper cylinder. The height of the upper cylinder is greater than that of the permanent magnet 23, ensuring that the permanent magnet 23 slides smoothly on top of the coil 24 without being squeezed, thereby reducing the loss of mechanical energy due to friction. Two leads are drawn from each coil 24, each of which is connected to the rectifier and transmission module. The induced electrical energy collected by the coil 24 enters the rectifier and transmission module through the leads. An opening is provided on the side of the lower cylinder that holds the coil, and a groove is provided in the cantilever arm. The opening is connected to the groove, and the leads can enter the groove through the opening. To prevent the leads from being damaged, the leads of all coils are set in the groove of the cantilever arm. The cantilever arm is mainly used to fix the energy collector 21 and ensure that there is a gap between adjacent energy collectors 21 to prevent the interaction between the permanent magnets 23 from affecting the energy conversion efficiency and reducing the energy collection efficiency.

[0025] Specifically, the method of using the present invention is: place the omnidirectional multi-layer electromagnetic energy collection device in the use scenario. When subjected to external force, the device will roll and displace under the action of the force. The permanent magnet 23 in the energy collector 21 will move relative to the coil 24 due to inertia, thereby generating an induced current to convert mechanical energy into electrical energy.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-layer electromagnetic energy harvesting device, characterized in that: The invention comprises a base (1) and at least two energy collector groups (2), wherein the energy collector group (2) is fixedly connected to the base (1), the energy collector group (2) comprises at least two energy collectors (21) arranged at intervals, the energy collectors (21) are fixedly connected via at least two cantilever arms, a gap is provided between two adjacent energy collectors (21), the bottom of the energy collector (21) at the bottom layer is fixedly connected to the base (1), at least two rectifying transmission modules are provided inside the base (1), and the energy collectors (21) are correspondingly connected to the rectifying transmission modules; The substrate (1) is a polyhedral substrate, and each surface of the polyhedral substrate is provided with an energy collector group (2); The energy collector (21) comprises a shell, a permanent magnet (23) and a coil (24), wherein the permanent magnet (23) and the coil (24) are arranged inside the shell, the coil (24) is fixedly arranged at the bottom of the shell, and an end cover (25) is fixedly arranged at the top of the shell; The shell is composed of two upper cylinders and a lower cylinder arranged in sequence from top to bottom. The upper cylinder and the lower cylinder are both hollow cylinders. The centers of the upper cylinder and the lower cylinder are arranged on the same straight line. The coil (24) is fixedly arranged in the lower cylinder, and the permanent magnet (23) is movably arranged in the upper cylinder.

2. The omnidirectional multi-layer electromagnetic energy harvesting device according to claim 1, characterized in that: The top surface of the coil (24) and the bottom surface of the upper cylinder are arranged on the same horizontal plane.

3. The omnidirectional multi-layer electromagnetic energy harvesting device according to claim 2, characterized in that: The height of the upper cylinder is greater than the height of the permanent magnet (23).

4. The omnidirectional multi-layer electromagnetic energy harvesting device according to claim 3, characterized in that: The coil (24) is connected to the rectification transmission module via at least two leads, and the leads are arranged in the groove (22) of the cantilever arm.

5. The method for using the omnidirectional multi-layer electromagnetic energy harvesting device according to any one of claims 2 to 4, characterized in that: When subjected to an external force, the energy collector group (2) and the base (1) are displaced and rolled, and the energy collector (21) converts mechanical energy into electrical energy, thereby achieving energy collection.

6. The method for using the omnidirectional multi-layer electromagnetic energy harvesting device according to claim 5, characterized in that: The energy collector (21) converts mechanical energy into induced current in the following manner: when the substrate (1) rolls, the permanent magnet (23) and the coil (24) move relative to each other due to the action of force, thereby converting the mechanical energy into electrical energy.

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