Hannon Nia, Harrison Christopher W, Kraśny Marcin J, Zabek Daniel
School of Engineering, Cardiff University, Cardiff CF24 3AA, UK.
Translational Medical Device Lab, Lambe Institute for Translational Research, College of Medicine, Nursing and Health Sciences, University of Galway, H91 TK33 Galway, Ireland.
Micromachines (Basel). 2023 Aug 12;14(8):1588. doi: 10.3390/mi14081588.
Mechanical vibrations can be effectively converted into electrical energy using a liquid type of energy harvesting device comprised of a ferrofluid and a permanent magnet-inductor coil assembly. Compared to solid vibration energy harvesting devices, the liquid nature of the ferrofluid overcomes space conformity limitations which allow for the utilization of a wider range of previously inaccessible mechanical vibration energy sources for electricity generation and sensing. This report describes the design and the governing equations for the proposed liquid vibration energy harvesting device and demonstrates vibration energy harvesting at frequencies of up to 33 Hz while generating up to 1.1 mV. The proposed design can continuously convert mechanical into electrical energy for direct discharge or accumulation and storage of electrical energy.
利用一种由铁磁流体和永磁体 - 电感线圈组件组成的液体型能量收集装置，机械振动能够有效地转化为电能。与固体振动能量收集装置相比，铁磁流体的液体特性克服了空间适配性限制，这使得可以利用更广泛的、以前无法获取的机械振动能源来发电和传感。本报告描述了所提出的液体振动能量收集装置的设计和控制方程，并展示了在高达33Hz的频率下进行振动能量收集，同时产生高达1.1mV的电压。所提出的设计能够持续将机械能转化为电能，用于直接放电或电能的积累与存储。
