The present application relates to a kind of multidirectional
extremely low frequency vibration energy harvesting device based on limiting
double pendulum system, belong to
vibration energy harvesting field.The device is composed of limiting
double pendulum module and energy conversion module, the limiting
double pendulum module includes encapsulation shell, cycloidal A,
mass block, cycloidal B, movable permanent
magnet and Teflon
pipe, the energy conversion module includes movable permanent
magnet,
energy converter, Teflon
pipe and fixed permanent
magnet,
energy converter can be selected according to different energy conversion principle, such as coil (
electromagnetic induction),
piezoelectric cantilever beam (piezoelectric effect), magnetoelectric
composite material (
magnetoelectric effect), friction
electricity material (
triboelectric effect) etc., the two modules are coupled by movable permanent magnet and Teflon
pipe for sharing;The
energy harvesting device can respond to multidirectional excitation, with extremely low
operating frequency, while simple structure, low mechanical fatigue, high output power, adapt to wave energy, wind energy,
mechanical vibration energy and many other
energy harvesting fields.