Wireless power receiver and method for controlling the wireless power receiver
First Claim
1. A wireless power receiver comprising:
- a resonant circuit configured to receive electromagnetic waves from a wireless power transmitter and output alternate current (AC) power;
a rectifier configured to rectify the AC power received from the resonant circuit into direct current (DC) power;
a DC/DC converter configured to convert the DC power received from the rectifier and output the converted DC power;
a battery;
a charger configured to charge the battery with the converted DC power; and
a controller configured to, upon detection of an event indicating a change in impedance at an output end of the DC/DC converter, control the impedance at the output end of the DC/DC converter and keep the impedance constant by adjusting voltage at the output end of the DC/DC converter.
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Accused Products
Abstract
A wireless power receiver and a method for controlling the wireless power receiver are provided. The wireless power receiver includes a resonant circuit configured to receiving electromagnetic waves from a wireless power transmitter and output alternate current (AC) power, a rectifier configured to rectify the AC power received from the resonant circuit into direct current (DC) power, a DC/DC converter configured to convert the DC power received from the rectifier and output the converted DC power, a battery, a charger configured to charge the battery with the converted DC power, and a controller configured to, upon detection of an event indicating a change in impedance at an output end of the DC/DC converter, control the impedance at the output end of the DC/DC converter and keep the impedance constant by adjusting voltage at the output end of the DC/DC converter.
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Citations
25 Claims
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1. A wireless power receiver comprising:
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a resonant circuit configured to receive electromagnetic waves from a wireless power transmitter and output alternate current (AC) power; a rectifier configured to rectify the AC power received from the resonant circuit into direct current (DC) power; a DC/DC converter configured to convert the DC power received from the rectifier and output the converted DC power; a battery; a charger configured to charge the battery with the converted DC power; and a controller configured to, upon detection of an event indicating a change in impedance at an output end of the DC/DC converter, control the impedance at the output end of the DC/DC converter and keep the impedance constant by adjusting voltage at the output end of the DC/DC converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for controlling a wireless power receiver, the method comprising:
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receiving electromagnetic waves from a wireless power transmitter and outputting alternate current (AC) power; rectifying the AC power into direct current (DC) power; converting the DC power; charging a battery of the wireless power receiver with the converted DC power; and upon detection of an event indicating a change in impedance at an output end of a DC/DC converter, controlling the impedance at the output end of the DC/DC converter and keeping the impedance constant by adjusting voltage at the output end of the DC/DC converter. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification