公开(公告)号：US20170222483A1

公开(公告)日：2017-08-03

申请号：US15417353

申请日：2017-01-27

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： Junjie Feng ,  Qiang Li ,  Fred C. Lee ,  Minfan Fu

IPC: H02J50/12 ,  H02J50/90 ,  H02J7/02

CPC classification number: H02J50/12 ,  H02J7/0042 ,  H02J7/025 ,  H02J50/90

Abstract: In one example, an omnidirectional wireless power transfer system includes high frequency power generator configured to generate a supply of high frequency oscillating power, a number of transmitter-side resonant tank circuits electrically coupled to the high frequency power generator, a receptacle including a number of coils arranged for omnidirectional power transfer to an electronic device placed in the receptacle, and a controller configured to activate individual ones of the transmitter-side resonant tank circuits to wirelessly transmit power to the electronic device through near-field resonant inductive coupling. In one example, the receptacle can be embodied as a bowl, and the controller can activate individual ones of the transmitter-side resonant tank circuits over time to generate an omnidirectional field distribution for wireless power transmission. In other aspects, various transmitter-side and receiver-side tank circuits for coupling independent resonance and ZVS operation are described.

公开(公告)号：US10333353B2

公开(公告)日：2019-06-25

申请号：US15417353

申请日：2017-01-27

Applicant: Virginia Tech Intellectual Properties, Inc.

Inventor： Junjie Feng ,  Qiang Li ,  Fred C. Lee ,  Minfan Fu

IPC: H02J7/02 ,  H02J7/00 ,  H02J50/12 ,  H02J50/90

Abstract: In one example, an omnidirectional wireless power transfer system includes high frequency power generator configured to generate a supply of high frequency oscillating power, a number of transmitter-side resonant tank circuits electrically coupled to the high frequency power generator, a receptacle including a number of coils arranged for omnidirectional power transfer to an electronic device placed in the receptacle, and a controller configured to activate individual ones of the transmitter-side resonant tank circuits to wirelessly transmit power to the electronic device through near-field resonant inductive coupling. In one example, the receptacle can be embodied as a bowl, and the controller can activate individual ones of the transmitter-side resonant tank circuits over time to generate an omnidirectional field distribution for wireless power transmission. In other aspects, various transmitter-side and receiver-side tank circuits for coupling independent resonance and ZVS operation are described.