Broadband vibrational energy harvesting device combining multiple nonlinearity

US10971986B2 · kind B2 · utility

Assignee

• UNIVERSITY COLLEGE CORK—NATIONAL UNIVERSITY OF IRELAND, Cork · IE

Inventors

• Saibal Roy · Cork, IE
• Pranay Podder · Cork, IE
• Dhiman Mallick · Cork, IE
• Andreas Amann · Edinburgh, GB

Key dates

• Filing date: Jun 16, 2016
• Grant date: Apr 6, 2021
• Expiry date: Apr 2, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10N30/306
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A vibrational energy harvesting device is disclosed, which comprises first and second assemblies mounted on a base at a distance one from the other. The first assembly comprises vibrational means adapted to stretch under a straining force, whereby the device exhibits monostable quartic nonlinearity. The first and second assemblies comprise respective magnetised means in opposite polarity to one another, so that the second assembly exerts a repulsive magnetic force upon the vibrational means, whereby the device exhibits bistability. Both the monostable quartic and bistable nonlinearities can be independently controlled. A method of harvesting energy with the vibrational energy harvesting device is also disclosed.