Wireless energy transfer using repeater resonators

US8587155B2 · kind B2 · utility

Assignee

• WiTricity Corporation · US

Inventors

• Eric R. Giler · Wellesley, US
• Katherine L. Hall · Westford, US
• Morris P. Kesler · Bedford, US
• Marin Soljacic · Belmont, US
• Aristeidis Karalis · Boston, US
• Andre B. Kurs · Sharon, US
• Qiang Li · Irvine, US
• Steven J. Ganem · Westwood, US

Key dates

• Filing date: Mar 10, 2010
• Grant date: Nov 19, 2013
• Expiry date: Sep 19, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y04S30/14
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

Described herein are improved configurations for a lighting system with wireless power transfer that includes a source high-Q magnetic resonator coupled to a power source and generating an oscillating magnetic field, at least one device high-Q magnetic resonator configured to convert said oscillating magnetic field to electrical energy used to power a light coupled to the at least one device resonator, and at least one repeater resonator, larger than the device resonator, wherein the repeater resonator is positioned further from the source resonator than the device resonator and improves the power transfer efficiency between the source resonator and the device resonator.