Planar vibration energy collector adopting magnetic liquid and permanent magnet combined structure

Abstract

The invention relates to a planar vibration energy collector adopting a magnetic liquid and permanent magnet combined structure. A vibration pick-up system of the collector is formed by a columnar permanent magnet with two ends absorbing magnetic liquid and a permanent magnetic piece which is arranged on the external side of a casing; attraction between permanent magnet materials is served as restoring force; the columnar permanent magnet which suspends inside the casing due to absorption of the magnetic liquid is served as an inertia mass block to respond to the exterior vibration; an induction coil winds a stepped cylinder on the internal side of the end cover, magnetic flux inside the induction coil changes along with relative movement of the permanent magnet inside the casing to induce electric energy and achieve collection of vibrational energy. The planar vibration energy collector adopting the magnetic liquid and permanent magnet combined structure is simple in structure, strong in practicability, fatigue resistant and can efficiently collect vibration energy in various planar forms.

Description

technical field [0001] The invention belongs to the field of power generation devices, in particular, the invention relates to a planar vibration energy collector adopting a combined structure of magnetic liquid and permanent magnet. Background technique [0002] Mechanical vibration energy is a kind of energy that is ubiquitous in the environment. This type of energy harvester mainly includes electrostatic, piezoelectric and electromagnetic types. In contrast, the electromagnetic type has the advantages of simple structure, large power generation, and no external power supply. . Plane vibration is a common form of vibration. To obtain vibration energy in this form, it is also necessary to design a pick-up system for planar vibration energy. The common mechanical connection structure of the spring and the permanent magnet mass block has disadvantages such as poor fatigue resistance and high noise. Magnetic springs are mostly designed using the repulsive force of the same p...

AI Technical Summary

Problems solved by technology

The common mechanical connection structure of the spring and the permanent magnet mass has the disadvantages of poor fatigue resistance and high noise

Magnetic springs are mostly designed using the repulsive force of the same polarity of the magnet. In order to increase its structural stability, it is usually necessary to add permanent magnet guides such as guide rods or sleeves, which will increase the friction between the permanent magnet and the guide and reduce its vibration pickup performance.

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