Magnetic rotary pendulum collision type electromagnetic vibration energy capturing device

Abstract

The invention provides a magnetic rotary pendulum collision type electromagnetic vibration energy capturing device. The magnetic rotary pendulum collision type electromagnetic vibration energy capturing device comprises a center fixed magnet, a moving magnet, two limiting baffles and a plurality of coils. The center fixed magnet is in a circular ring shape, the moving magnet is in a cylinder shape or a circular ring shape, attraction force exists between the moving magnet and the center fixed magnet, and a moving track of the moving magnet is an annular track surrounding the center fixed magnet. The two limiting baffles are fixed to the symmetrical positions of the movement track and used for limiting the movement stroke of the movement magnet, the coil is distributed below the movement track and arranged corresponding to the movement track of the movement magnet, induction current can be generated in the movement process of the movement magnet, and the coil is externally connected with a current leading-out port. The device can be placed horizontally and vertically, and can realize monostable and bistable characteristics under different conditions, so that the system has different resonance frequency bands to adapt to different environment vibration frequencies, and the energy capture efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of electromagnetic vibration energy collection, in particular to a magnetic pendulum collision type electromagnetic vibration energy capture device. Background technique [0002] In recent years, a large number of portable and embedded electronic devices have been applied to people's daily life, such as wristbands, gait monitors, pacemakers, drug pumps, etc. These devices can monitor or maintain people's daily health status. However, currently such portable and embedded electronic devices are still powered by chemical batteries or lithium batteries, which need to be replaced or recharged periodically to maintain normal operation. With the increasing maturity of technology, vibration energy harvesting technology, which obtains energy from the surrounding environment where the equipment works, has attracted people's attention, which can convert the vibration energy in the environment into electrical energy to ...

AI Technical Summary

Problems solved by technology

[0003] Structural vibration in the environment has certain randomness and variability, while the vibration generated by human body movement has the characteristics of low frequency. Most of the existing electromagnetic vibration energy capture devices have fixed frequency and narrow response frequency band. It can respond within a narrow frequency range, and cannot adjust its natural frequency according to the specific environmental vibration and human motion characteristics to meet actual needs

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