Power receiver and power transmitting system
First Claim
1. A power receiver comprising:
- a secondary-side resonant coil including a resonant coil part and configured to receive electric power from a primary-side resonant coil through magnetic field resonance generated between the primary-side resonant coil and the secondary-side resonant coil;
a capacitor inserted in series in the resonant coil part of the secondary-side resonant coil;
a series circuit, coupled in parallel with the capacitor, of a first switch and a second switch;
a first rectifier coupled in parallel with the first switch, the first rectifier having a first rectification direction;
a second rectifier coupled in parallel with the second switch, the second rectifier having a second rectification direction opposite to the first rectification direction;
a detector configured to detect a voltage waveform or a current waveform of the electric power supplied to the secondary-side resonant coil; and
a controller configured to adjust, in a state of adjusting a phase difference between the voltage waveform or the current waveform detected by the detector and a driving signal that includes a first signal for switching on/off the first switch and includes a second signal for switching on/off the second switch to be a predetermined phase difference, a length of a period, during which both the first switch and the second switch are on, to adjust an amount of the electric power received by the secondary-side resonant coil.
1 Assignment
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Accused Products
Abstract
A power receiver includes: a secondary-side resonant coil including a resonant coil part to receive electric power from a primary-side resonant coil through magnetic field resonance; a capacitor inserted in series in the resonant coil part; a series circuit of a first switch and a second switch; a first rectifier having a first rectification direction; a second rectifier having a second rectification direction; a detector to detect a voltage waveform or a current waveform of the power; and a controller to adjust, in a state of adjusting a phase difference between the waveform and a driving signal that includes a first signal for switching on/off the first switch and a second signal for switching on/off the second switch to be a predetermined phase difference, a length of a period, during which the switches are both on, to adjust an amount of the power received by the secondary-side resonant coil.
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Citations
11 Claims
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1. A power receiver comprising:
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a secondary-side resonant coil including a resonant coil part and configured to receive electric power from a primary-side resonant coil through magnetic field resonance generated between the primary-side resonant coil and the secondary-side resonant coil; a capacitor inserted in series in the resonant coil part of the secondary-side resonant coil; a series circuit, coupled in parallel with the capacitor, of a first switch and a second switch; a first rectifier coupled in parallel with the first switch, the first rectifier having a first rectification direction; a second rectifier coupled in parallel with the second switch, the second rectifier having a second rectification direction opposite to the first rectification direction; a detector configured to detect a voltage waveform or a current waveform of the electric power supplied to the secondary-side resonant coil; and a controller configured to adjust, in a state of adjusting a phase difference between the voltage waveform or the current waveform detected by the detector and a driving signal that includes a first signal for switching on/off the first switch and includes a second signal for switching on/off the second switch to be a predetermined phase difference, a length of a period, during which both the first switch and the second switch are on, to adjust an amount of the electric power received by the secondary-side resonant coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification