Back to results
US 10,476,309 B2Granted
Wireless power transfer system and a wireless power receiver thereof
AssigneeNational Chi Nan University
InventorsYo-Sheng Lin, Chien-Chin Wang
Life of this patent
Estimating the term…
Abstract
A wireless power transfer system includes a wireless power transmitter and a wireless power receiver. The wireless power receiver includes: a receiver resonator for wirelessly receiving power from the wireless power transmitter through resonant inductive coupling to generate an AC induced voltage; an AC-to-DC converter having a first input terminal and a second input terminal that are connected to the receiver resonator for receiving the AC induced voltage therefrom, and converting the AC induced voltage into a DC converted voltage; and a power storage element connected to the first and second input terminals of the AC-to-DC converter.
Claims10
A wireless power transfer system comprising:
- a wireless power transmitter capable of resonating at a resonance frequency, and for wirelessly transmitting power at the resonance frequency;
- and
- a wireless power receiver including
- a receiver resonator capable of resonating at the resonance frequency, and for wirelessly receiving the power from said wireless power transmitter at the resonance frequency through resonant inductive coupling to generate an AC (alternating current) induced voltage,
- an AC-to-DC (direct current) converter having a first input terminal and a second input terminal that are connected to said receiver resonator for receiving the AC induced voltage therefrom, and an output terminal, said AC-to-DC converter converting the AC induced voltage into a DC converted voltage, and outputting the DC converted voltage at the output terminal thereof,
- a power storage element connected to said first and second input terminals of said AC-to-DC converter, and
- a DC-to-DC converter connected to said output terminal of said AC-to-DC converter for receiving the DC converted voltage therefrom, and converting the DC converted voltage into a DC output voltage;
- wherein said DC-to-DC converter includes
- a first capacitor having a first terminal that is connected to said output terminal of said AC-to-DC converter for receiving the DC converted voltage therefrom, and a second terminal,
- a second capacitor having a first terminal that provides the DC output voltage, and a second terminal that is grounded, and
- a switching module connected to said first and second terminals of each of said first and second capacitors, and operable to establish a first electrical connection between said first terminals of said first and second capacitors. to establish a second electrical connection between said second terminals of said first and second capacitors, and to establish a third electrical connection between said second terminal of said first capacitor and said first terminal of said second capacitor.
8 more elements
A wireless power receiver comprising:
- a receiver resonator capable of resonating at a resonance frequency, and for wirelessly receiving power at the resonance frequency through resonant inductive coupling to generate an AC (alternating current) induced voltage;
- an AC-to-DC (direct current) converter having a first input terminal and a second input terminal that are connected to said receiver resonator for receiving the AC induced voltage therefrom, and an output terminal, said AC-to-DC converter converting the AC induced voltage into a DC converted voltage, and outputting the DC converted voltage at the output terminal thereof;
- a power storage element connected to said first and second input terminals of said AC-to-DC converter;
- and
- a DC-to-DC converter connected to said output terminal of said AC-to-DC converter for receiving the DC converted voltage therefrom, and converting the DC converted voltage into a DC output voltage;
- wherein said DC-to-DC converter includes
- a first capacitor having a first terminal that is connected to said output terminal of said AC-to-DC converter for receiving the DC converted voltage therefrom, and a second terminal,
- a second capacitor having a first terminal that provides the DC output voltage, and a second terminal that is grounded, and
- a switching module connected to said first and second terminals of each of said first and second capacitors, and operable to establish a first electrical connection between said first terminals of said first and second capacitors, to establish a second electrical connection between said second terminals of said first and second capacitors, and to establish a third electrical connection between said second terminal of said first capacitor and said first terminal of said second capacitor.
6 more elements
Dependencies are inferred from the claim text.