Wireless power transfer system, power transfer apparatus, and power reception apparatus
First Claim
1. A wireless power transfer system configured to perform electrical power transfer and signal communication by magnetic field resonance between a power transfer apparatus and a power reception apparatus in a time-division manner,wherein electrical power comprises first electrical power and second electrical power,the power transfer apparatus comprises:
- a first resonator to resonate at a predetermined frequency and to switch a Q-factor between high and low; and
a first controller to set the Q-factor of the first resonator high when performing the electrical power transfer, to set the Q-factor of the first resonator low when performing the signal communication, to transfer the first electrical power at a predetermined interval, to perform authentication based on authentication information comprising identification information of the power reception apparatus from the power reception apparatus, and to transfer the second electrical power to a power reception apparatus which is authenticated and whose allocated period has checked by the signal communication, andwherein the power reception apparatus comprises;
a second resonator to resonate at the predetermined frequency and to switch a Q-factor between high and low; and
a second controller to set the Q-factor of the second resonator high when performing the electrical power transfer, to set the Q-factor of the second resonator low when performing the signal communication, to receive the first electrical power without authentication, to perform synchronization with the power transmitting apparatus based on the predetermined interval of the first electrical power, and to receive the second electrical power reception after authentication and check of an allocated period by the signal communication.
1 Assignment
0 Petitions
Accused Products
Abstract
According to one embodiment, a wireless power transfer system performs electrical power transfer and signal communication by magnetic field resonance. A power transfer apparatus includes a first resonator configured to resonate at a predetermined frequency and to switch a Q-factor between high and low, and a first controller configured to set the Q-factor of the first resonator high in the electrical power transfer, and to set the Q-factor of the first resonator low in the signal communication. The power reception apparatus includes a second resonator configured to resonate at the predetermined frequency and to switch a Q-factor between high and low, and a second controller configured to set the Q-factor of the second resonator high when performing the electrical power transfer and to set the Q-factor of the second resonator low when performing the signal communication.
-
Citations
17 Claims
-
1. A wireless power transfer system configured to perform electrical power transfer and signal communication by magnetic field resonance between a power transfer apparatus and a power reception apparatus in a time-division manner,
wherein electrical power comprises first electrical power and second electrical power, the power transfer apparatus comprises: -
a first resonator to resonate at a predetermined frequency and to switch a Q-factor between high and low; and a first controller to set the Q-factor of the first resonator high when performing the electrical power transfer, to set the Q-factor of the first resonator low when performing the signal communication, to transfer the first electrical power at a predetermined interval, to perform authentication based on authentication information comprising identification information of the power reception apparatus from the power reception apparatus, and to transfer the second electrical power to a power reception apparatus which is authenticated and whose allocated period has checked by the signal communication, and wherein the power reception apparatus comprises; a second resonator to resonate at the predetermined frequency and to switch a Q-factor between high and low; and a second controller to set the Q-factor of the second resonator high when performing the electrical power transfer, to set the Q-factor of the second resonator low when performing the signal communication, to receive the first electrical power without authentication, to perform synchronization with the power transmitting apparatus based on the predetermined interval of the first electrical power, and to receive the second electrical power reception after authentication and check of an allocated period by the signal communication. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A power transfer apparatus for a wireless power transfer system configured to perform electrical power transfer and signal communication by magnetic field resonance between the power transfer apparatus and a power reception apparatus in a time-division manner, electrical power comprising first electrical power and second electrical power, the power transfer apparatus comprising:
-
a resonator to resonate at a resonant frequency and to switch a Q-factor between high and low; and a controller to set the Q-factor of the resonator high when performing an electrical power transfer, to set the Q-factor of the resonator low when performing a communication, to transfer the first electrical power at a predetermined interval, to perform authentication based on authentication information comprising identification information of the power reception apparatus from the power reception apparatus, and to transfer the second electrical power to a power reception apparatus which is authenticated and whose allocated period has checked by the signal communication. - View Dependent Claims (9, 10, 11)
-
-
12. A power reception apparatus for a wireless power transfer system configured to perform electrical power transfer and signal communication by magnetic field resonance between a power transfer apparatus and the power reception apparatus in a time-division manner, electrical power comprising first electrical power and second electrical power, the power reception apparatus comprising:
-
a resonator to resonate at a resonant frequency and to switch a Q-factor between high and low; and a controller to set the Q-factor of the resonator high when performing an electrical power reception, to set the Q-factor of the resonator low when performing a communication, to receive the first electrical power at a predetermined interval, to perform synchronization with the power transmitting apparatus based on the predetermined interval of the first electrical power, and to receive the second electrical power from a power transfer apparatus which is authenticated by the signal communication and whose allocated period has checked by the signal communication. - View Dependent Claims (13, 14, 15, 16, 17)
-
Specification