Wireless power receiving apparatus
AssigneeAdvantest Corporation
InventorsYuki Endo, Yasuo Furukawa
Life of this patent
Estimating the term…
Abstract
In a wireless power supply system, a first capacitor is arranged in series with an antenna. A second capacitor and a switch are arranged in series on a path arranged in parallel with the first capacitor. A control unit adjusts the duty ratio of the switch according to the frequency of an electric power signal.
Claims26
A wireless power receiving apparatus configured to receive an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field, transmitted from a wireless power supply apparatus, the wireless power receiving apparatus comprising:
- a reception coil configured to receive the electric power signal;
- a first capacitor arranged in series with the reception coil;
- a switch and a second capacitor arranged in series on a path arranged in parallel with the first capacitor;
- and
- a control unit configured to control an on/off operation of the switch, with a duty ratio that corresponds to the frequency of the electric power signal.
A wireless power receiving apparatus configured to receive an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field, transmitted from a wireless power supply apparatus, the wireless power receiving apparatus comprising:
- a reception coil configured to receive the electric power signal;
- an auxiliary coil and a capacitor arranged in series with the reception coil;
- a switch arranged in parallel with the auxiliary coil;
- and
- a control unit configured to control an on/off operation of the switch, with a duty ratio that corresponds to the frequency of the electric power signal.
A wireless power receiving apparatus configured to receive an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field, transmitted from a wireless power supply apparatus, the wireless power receiving apparatus comprising:
- a reception coil configured to receive the electric power signal;
- a first auxiliary coil and a first capacitor arranged in series with the reception coil;
- a second auxiliary coil configured such that it shares a common core with the first auxiliary coil;
- a second capacitor and a third capacitor arranged in series such that they and the second auxiliary coil form a closed loop;
- a switch arranged in parallel with the third capacitor;
- and
- a control unit configured to control an on/off operation of the switch, with a duty ratio that corresponds to the frequency of the electric power signal.
A wireless power supply apparatus configured to transmit an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field, the wireless power supply apparatus comprising:
- a transmission coil configured to transmit the electric power signal;
- a first capacitor arranged in series with the transmission coil;
- a switch and a second capacitor arranged in series on a path arranged in parallel with the first capacitor;
- and
- a control unit configured to perform an on/off operation of the switch, with a duty ratio that corresponds to the frequency of the electric power signal.
A wireless power supply apparatus configured to transmit an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field, the wireless power supply apparatus comprising:
- a transmission coil configured to transmit the electric power signal;
- an auxiliary coil and a capacitor arranged in series with the transmission coil;
- a switch arranged in parallel with the auxiliary coil;
- and
- a control unit configured to control an on/off operation of the switch, with a duty ratio that corresponds to the frequency of the electric power signal.
A wireless power supply apparatus configured to transmit an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field, the wireless power supply apparatus comprising:
- a transmission coil configured to transmit the electric power signal;
- a first auxiliary coil and a first capacitor arranged in series with the transmission coil;
- a second auxiliary coil configured such that it shares a common core with the first auxiliary coil;
- a second capacitor and a third capacitor arranged in series such that they and the second auxiliary coil form a closed loop;
- a switch arranged in parallel with the third capacitor;
- and
- a control unit configured to control an on/off operation of the switch, with a duty ratio that corresponds to the frequency of the electric power signal.
Dependencies are inferred from the claim text.