WIRELESS POWER TRANSMISSION SYSTEM

摘要

A power transmission device includes a power-transmission-side active electrode and a power-transmission-side passive electrode. A power reception device includes a power-reception-side active electrode and a power-reception-side passive electrode. The power transmission device and the power reception device can be shifted along an X axis up to a maximum shift distance from a standard arrangement where electrode centers of the power-transmission-side active electrode and the power-reception-side active electrode oppose and are superposed with each other while maintaining the opposition surface area between the power-transmission-side active electrode and the power-reception-side active electrode.

主权项

1. A wireless power transmission system comprising:
a power transmission device including:
a first power transmission electrode disposed in a plane parallel to a transmission/reception plane defined by the wireless power transmission system,a second power transmission electrode parallel to the first power transmission electrode and having an internal opening that surrounds the first power transmission electrode and being concentric with the first power transmission electrode, andan alternating-current power generation circuit coupled to the first and second power transmission electrodes; and a power reception device including:
a first power reception electrode disposed in a position parallel to the transmission/reception plane when the power reception device is positioned on the power transmission device,a second power reception electrode parallel to the first power reception electrode and having an internal opening that surrounds the first power reception electrode and being concentric with the first power reception electrode, anda load circuit coupled to the first and second power reception electrodes, wherein one of the first power transmission electrode and the first power reception electrode completely overlaps the other of the first power transmission electrode and the first power reception electrode when the power reception device is positioned on the power transmission device in a standard arrangement in which respective centers of the first power transmission electrode and the first power reception electrode are superposed with each other in a direction perpendicular to the transmission/reception plane, and wherein at least one of the power transmission device and the power reception device can be shifted from the standard arrangement by a predetermined shift distance along a first axis in the transmission/reception opposition plane while maintaining that the one of the first power transmission electrode and the first power reception electrode completely overlaps the other of the first power transmission electrode and the first power reception electrode.