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Wireless power transmission for battery charging

United States Patent

9,496,746
November 15, 2016
View the Complete Patent at the US Patent & Trademark Office
A wireless power transmission system is provided for high power applications. The power transmission system is comprised generally of a charging unit configured to generate an alternating electromagnetic field and a receive unit configured to receive the alternating electromagnetic field from the charging unit. The charging unit includes a power source; an input rectifier; an inverter; and a transmit coil. The transmit coil has a spirangle arrangement segmented into n coil segments with capacitors interconnecting adjacent coil segments. The receive unit includes a receive coil and an output rectifier. The receive coil also has a spirangle arrangement segmented into m coil segments with capacitors interconnecting adjacent coil segments.
Mi; Chris (Detroit, MI), Li; Siqi (Dearborn, MI), Nguyen; Trong-Duy (Dearborn, MI), Wang; Junhua (Dearborn Heights, MI), Li; Jiangui (Dearborn Heights, MI), Li; Weihan (Westland, MI), Xu; Jun (Inkster, MI)
The Regents Of The University Of Michigan (Ann Arbor, MI)
14/ 277,288
20140340031
May 14, 2014
GOVERNMENT CLAUSE This invention was made with government support under grant DE-EE0002720 awarded by the Department of Energy. The Government has certain rights in this invention.