公开(公告)号：US09281119B2

公开(公告)日：2016-03-08

申请号：US14079577

申请日：2013-11-13

Applicant: The Hong Kong Polytechnic University

Inventor： Bailian Ni ,  Chi-yung Chung ,  Hon-lung Chan

IPC: H02J7/00 ,  H01F38/14 ,  H02J5/00 ,  H02J7/02

CPC classification number: H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/12 ,  H02J50/40 ,  H02J50/50

Abstract: A system using a three-coil topology for wireless power transfer is disclosed. The system comprises a primary resonator coupled to a power source, a repeater resonator and a receiver resonator. The primary resonator has a primary coil, and the repeater resonator has a repeater coil adjacent to the primary coil. The repeater coil and the primary coil are separated by a distance selected, and the repeater coil is configured, to amplify a primary-coil current by inductively generating a repeater-coil current that is substantially greater than the primary-coil current. A magnetic field contributed from both the primary-coil current and the repeater-coil current is generated while the power source needs not provide a terminal voltage across the repeater coil, thereby discouraging occurrence of voltage stress at the power source. The receiver resonator has a receiver coil, which receives the magnetic field to inductively generate a receiver-coil current for feeding to a load.

Abstract translation: 公开了一种使用三线圈拓扑进行无线电力传输的系统。 该系统包括耦合到电源的主谐振器，中继器谐振器和接收器谐振器。 主谐振器具有初级线圈，并且中继器谐振器具有与初级线圈相邻的中继器线圈。 中继器线圈和初级线圈被分离出所选择的距离，并且配置中继器线圈，以通过感应地产生基本上大于初级线圈电流的中继器线圈电流来放大初级线圈电流。 产生从初级线圈电流和中继器线圈电流两方面产生的磁场，而电源不需要在中继线圈上提供端子电压，从而阻止电源处的电压应力的发生。 接收器谐振器具有接收器线圈，其接收磁场以感应地产生用于馈送到负载的接收器线圈电流。