CN-122026743-A - Vibration energy collecting device

Abstract

The invention relates to the field of vibration energy, and discloses a vibration energy collecting device which comprises a shell, a vibrator, a permanent magnet, a pressure power generation assembly, a double-resonance system and a conical spring driving piezoelectric sheet power generation combined mechanism, wherein the vibrator is arranged in the shell through an elastic assembly, the permanent magnet is arranged in the shell through another group of elastic assemblies, the pressure power generation assembly is arranged in the shell and is connected with the vibrator or the permanent magnet and is used for converting mechanical vibration energy into electric energy, the double-resonance system is formed by a balancing weight with a coil suspended by a planar spring and the permanent magnet with a magnetic conduction sheath, and the combined mechanism of coil cutting magnetic induction wire power generation and conical spring driving piezoelectric sheet power generation is combined, so that the working frequency band is synchronously widened and the output power is improved.

Inventors

• YANG JIE
• CHEN JUNAN
• WANG SICHAO
• ZENG SHIKAI
• WU YUFENG
• ZHENG ZIJIAN
• ZHOU BAIYAN
• ZHANG ZHAO
• ZHAO KANG
• CHEN YANREN
• FU WEILONG
• WANG LIHAN
• ZHUANG GUIHE
• ZHANG CHANGWEI
• Zhong Yezhan
• HUANG YUBO
• Mo Mingjian
• YE JIANG
• Liang Qishuai
• LI PENG
• ZHOU CHUAN
• ZI ZHENYU
• YE SHENG
• Lai Yeming

Assignees

• 海南电网有限责任公司输电运检分公司

Dates

Publication Date

20260512

Application Date

20260114

Claims (9)

1. 1. A vibration energy collecting device is characterized by comprising, A housing (1); A vibrator (2) mounted inside the housing (1) through an elastic member (4); a permanent magnet (3) mounted inside the housing (1) by another set of said elastic assemblies (4); and the pressure power generation assembly (5) is arranged in the shell (1), is connected with the vibrator (2) or the permanent magnet (3) and is used for converting mechanical vibration energy into electric energy.
2. 2. The vibration energy harvesting device according to claim 1, wherein the vibrator (2) comprises a weight (21) and a coil (22) arranged at one end of the weight (21), the coil (22) having an inner diameter larger than an outer diameter of the permanent magnet (3).
3. 3. The vibration energy harvesting device according to claim 2, wherein the elastic assembly (4) comprises a planar spring (41) and two sets of mounting sleeves (42), the two sets of mounting sleeves (42) clamping the planar spring (41) and being mounted in connection with the housing (1).
4. 4. A vibration energy harvesting apparatus according to claim 3, wherein said planar spring (41) comprises an inner ring (411), an outer ring (412), and an elastic member (413) connecting said inner ring (411) and said outer ring (412).
5. 5. The vibration energy harvesting apparatus according to claim 3 or 4, wherein the pressure generating assembly (5) comprises a piezoelectric sheet (51) and a conical spring (52) provided at one end of the piezoelectric sheet (51), and the other end of the piezoelectric sheet (51) is connected to the inner wall of the housing (1).
6. 6. A vibration energy harvesting apparatus according to claim 5, wherein said pressure generating assemblies (5) are arranged in two sets, and one ends of said conical springs (52) of said pressure generating assemblies (5) not connected to said piezoelectric sheet (51) are connected to said vibrator (2) and said permanent magnet (3), respectively.
7. 7. A vibration energy harvesting apparatus according to claim 6, wherein the outer side of the balancing weight (21) is provided with a non-magnetically permeable sheath (23), the non-magnetically permeable sheath (23) being connected to the planar springs (41) of a set of the elastic members (4).
8. 8. A vibration energy harvesting device according to claim 7, characterized in that the outer side of the permanent magnet (3) is provided with a magnetically permeable sheath (31), the magnetically permeable sheath (31) being connected with the planar springs (41) of the other set of elastic members (4).
9. 9. The vibration energy harvesting device according to any one of claims 6-8, wherein the housing (1) comprises a lower shell (11), an upper shell (12) and a middle shell (13), the lower shell (11), the upper shell (12) and the middle shell (13) are mounted and formed through connecting pieces, and the middle shell (13) is located between two groups of elastic components (4).

Description

Vibration energy collecting device Technical Field The invention relates to the field of vibration energy, in particular to a vibration energy collecting device. Background The vibration energy collection technology can convert mechanical vibration widely existing in the environment into electric energy, and provides a continuous and stable self-powered solution for the low-power consumption sensing equipment. The current common energy collection modes are mainly divided into electromagnetic type and piezoelectric type, wherein the electromagnetic type energy converter has higher output power, limited low-frequency response capability and narrower working frequency band, and the piezoelectric type energy converter has a simple structure and easy integration, has small output current and high impedance, and has obviously reduced efficiency in a broadband vibration environment. Although there have been studies to combine two mechanisms to improve performance, most of the existing combined devices are complex in structure and large in volume, and it is difficult to maintain high-efficiency energy collection in an application scenario where the vibration frequency is time-varying. Disclosure of Invention Therefore, the invention aims to solve the technical problems that the traditional single or composite vibration energy collecting device has narrow working band and low energy conversion efficiency in a complex vibration environment. The technical problems are solved by the invention which provides a vibration energy collecting device which comprises, A housing; a vibrator installed inside the housing through an elastic member; A permanent magnet mounted inside the housing through another set of the elastic members; The pressure power generation assembly is arranged in the shell, is connected with the vibrator or the permanent magnet and is used for converting mechanical vibration energy into electric energy; The vibrator and the permanent magnet are respectively and elastically suspended in the shell through the elastic component, when external environment vibration is transmitted to the shell, asynchronous reciprocating motion is generated between the vibrator and the permanent magnet, relative displacement between the vibrator and the permanent magnet enables the vibrator and the permanent magnet to be subjected to electromagnetic coupling, electromagnetic energy is output, meanwhile, the pressure power generation component directly converts vibration mechanical energy of the vibrator or the permanent magnet into piezoelectric energy, and the effective working frequency band of the device is effectively widened through the composite energy conversion mode, and overall energy collection efficiency and output power are remarkably improved. In a preferred embodiment of the vibration energy collecting device, the vibrator comprises a balancing weight and a coil arranged at one end of the balancing weight, wherein the inner diameter of the coil is larger than the outer diameter of the permanent magnet; The electromagnetic energy generating device comprises a vibrator, a coil, a permanent magnet, a coil and a coil, wherein the vibrator is arranged on the vibrator, the coil is used for adjusting the mass of the vibrator so as to set the natural frequency of the vibrator, the coil is fixed at one end of the vibrator, electromagnetic coupling is generated through relative movement of the coil and the permanent magnet, so that electromagnetic energy is output, the inner diameter of the coil is larger than the outer diameter of the permanent magnet, the permanent magnet can freely reciprocate in an inner cavity of the coil without contact in the vibration process, and a magnetic induction wire is continuously cut so as to generate stable induction current. In a preferred embodiment of the vibration energy collecting device, the elastic component comprises a plane spring and two groups of mounting sleeves, wherein the two groups of mounting sleeves clamp and fix the plane spring and are in mounting connection with the shell; Specifically, the plane spring can generate stable restoring force when vibrating axially, ensures the stability and directivity of vibrator movement, simultaneously greatly saves axial space by the plane structure, ensures that the whole energy collecting device is more compact in structure, can limit the vibrator and the permanent magnet to swing stably along the axial direction, avoids contact of the vibrator and the permanent magnet, and continuously cuts magnetic induction lines to generate stable induction current. In a preferred embodiment of the vibration energy collecting device, the planar spring comprises an inner ring and an outer ring, and an elastic member for connecting the inner ring and the outer ring, wherein the elastic member can be made of elastically-reset metal; Specifically, before the equipment is assembled, the length of the elastic piece can be selected according to speci