Contactless power feeding system

摘要

A contactless power feeding system includes a power transmitting device and a power receiving device. The power transmitting device includes a first AC power source configured to generate an AC power with a first frequency, a second AC power source configured to generate an AC power with a second frequency which is different from the first frequency, a first electromagnetic induction coil, and a first resonant coil. The power receiving device includes a second resonant coil, a second electromagnetic induction coil, and a power storage unit. Power is wirelessly supplied to the power storage unit at the second frequency by a magnetic resonance phenomenon which occurs between the first resonant coil and the second resonant coil.

主权项

1. A contactless power feeding system comprising:
a power transmitting device comprising:
a first AC power source configured to generate a first AC power with a first frequency;a second AC power source configured to generate a second AC power with a second frequency which is different from the first frequency;a first electromagnetic induction coil;a first resonant coil;a switch electrically connected to the first electromagnetic induction coil, the switch being configured to control switching a connection to the first electromagnetic induction coil between the first AC power source and the second AC power source; anda control circuit configured to control the switch; and a power receiving device comprising a power storage unit, a second electromagnetic induction coil, and a second resonant coil, wherein the first electromagnetic induction coil is configured to resonate with the second electromagnetic induction coil at the first frequency wherein the first resonant coil is configured to resonate with the second resonant coil at the second frequency, and wherein the power storage unit is configured to store a power supplied from the second AC power source through the first electromagnetic induction coil and the first resonant coil.