Vibration energy collector with piezomagnetic/piezoelectric composite energy conversion structure

A technology of vibration energy harvesting and magnetoelectric transducers, applied in generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, piezoelectric/electrostrictive/magnetostrictive devices, etc., can Solve the problems of high battery cost, obstacles to power supply, inability to use wired power supply, etc., and achieve high magnetoelectric conversion efficiency
CN101404468AInactive Publication Date: 2009-04-08CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2009-04-08
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a vibrational energy collecting device adopting a piezomagnetic / piezoelectric compound transduction structure. The device comprises a supporting mechanism, a piezomagnetic / piezoelectric compound magneto-electricity transducer, a permanent magnet magnetic circuit and an elastic mechanism; wherein, the piezomagnetic / piezoelectric compound magneto-electricity transducer is arranged in the space of the air gap field of the permanent magnet magnetic circuit; one of the piezomagnetic / piezoelectric compound magneto-electricity transducer and the permanent magnet magnetic circuit is elastically connected with the supporting mechanism by the elastic mechanism and can do reciprocating movement along with the mechanism while the other is fixed on the base of the supporting mechanism; namely, the piezomagnetic / piezoelectric compound magneto-electricity transducer is fixed on the base while the permanent magnet magnetic circuit is connected with the supporting mechanism by the elastic mechanism, or the piezomagnetic / piezoelectric compound magneto-electricity transducer is connected with the supporting mechanism by the elastic mechanism while the permanent magnet magnetic circuit is fixed on the base by non-permeability magnetic material. The invention has the beneficial effect that the invention provides a self-energized device which is applicable to weak vibration and has higher magnetoelectricity conversion efficiency.
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Description

technical field

[0001] The invention relates to a technology capable of converting mechanical vibration energy into electric energy and collecting it, in particular to a vibration energy collector adopting a piezoelectric / piezoelectric composite energy conversion structure. Background technique

[0002] Electronic products continue to develop in the direction of miniaturization. The development of Bluetooth technology and low-power communication standards (such as Zigbee and IEEE802.15.4) has largely promoted the research of wireless sensor networks and communication nodes. Due to the energy The characteristics of low power consumption, small size, large function, and mass production are also developing rapidly. However, whether it is wireless sensing products or micro-electromechanical devices, the problem of power supply is becoming a great obstacle to their development. The reason is that the current means of powering these systems mainly rely on batteries or power lines...

Claims

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