Wireless power receiving apparatus and power control method thereof related applications
First Claim
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1. A wireless power receiving apparatus, comprising:
- a secondary core to receive a wireless power signal from a primary core of a wireless power transmission apparatus;
a magnetic sensor to detect a magnetic field value generated from the primary core for detecting a foreign object; and
a receiving controller to determine the foreign object is detected if the detected magnetic field value from the magnetic sensor is lower than a reference magnetic field value, to determine the foreign object is not detected if the detected magnetic field value is equal to or greater than the reference magnetic field value, and to transmit an error code to the wireless power transmission apparatus via the secondary core if the detected magnetic field value from the magnetic sensor is lower than the reference magnetic field value and communication with the wireless power transmission apparatus is available,wherein the error code represents the foreign object is detected, andwherein the wireless power signal is not received when the error code is not transmitted to the wireless power transmission apparatus because of the communication with the wireless power transmission apparatus is not available.
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Abstract
A wireless power receiving device and a power control method thereof. The wireless power receiving apparatus, includes: a secondary core configured to receive a wireless power signal from a primary core of a wireless power transmission apparatus; a magnetic sensor configured to detect a magnetic field generated from the primary core; and a receiving controller configured to transmit an error code to the wireless power transmission apparatus via the secondary core if a measured magnetic field value from the magnetic sensor is lower than a reference magnetic value and the communication with the wireless power transmission apparatus is available.
23 Citations
19 Claims
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1. A wireless power receiving apparatus, comprising:
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a secondary core to receive a wireless power signal from a primary core of a wireless power transmission apparatus; a magnetic sensor to detect a magnetic field value generated from the primary core for detecting a foreign object; and a receiving controller to determine the foreign object is detected if the detected magnetic field value from the magnetic sensor is lower than a reference magnetic field value, to determine the foreign object is not detected if the detected magnetic field value is equal to or greater than the reference magnetic field value, and to transmit an error code to the wireless power transmission apparatus via the secondary core if the detected magnetic field value from the magnetic sensor is lower than the reference magnetic field value and communication with the wireless power transmission apparatus is available, wherein the error code represents the foreign object is detected, and wherein the wireless power signal is not received when the error code is not transmitted to the wireless power transmission apparatus because of the communication with the wireless power transmission apparatus is not available. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 19)
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10. A method for controlling a receiving power in a wireless power receiving apparatus, the method comprising:
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obtaining a measured magnetic field value by measuring a magnetic field formed by a primary core of a wireless power transmission apparatus via a magnetic sensor installed on the wireless power receiving apparatus for detecting a foreign object determining the foreign object is detected if the measured magnetic field value from the magnetic sensor is lower than a reference magnetic field value and the foreign object is not detected if the measured magnetic field value is equal to or greater than the reference magnetic field value; and transmitting an error code to the wireless power transmission apparatus via a secondary core if the measured magnetic field value from the magnetic sensor is lower than the reference magnetic field value and communication with the wireless power transmission apparatus is available, wherein the error code represents the foreign object is detected, and wherein the wireless power signal is not received when the error code is not transmitted to the wireless power transmission apparatus because of the communication with the wireless power transmission apparatus is not available. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A wireless power transmission system, comprising:
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a wireless power transmission apparatus comprising; a primary core to transmit a wireless power signal during wireless charging; and a transmission controller, a wireless power receiving apparatus comprising; a secondary core to receive the wireless power signal from the primary core; a magnetic sensor to detect a magnetic field generated from the primary core for detecting a foreign object; and a receiving controller to determine the foreign object is detected if the detected magnetic field value is lower than a reference magnetic field value, to determine the foreign object is not detected if the detected magnetic field value is equal to or greater than the reference magnetic field value, and to transmit an error code to the wireless power transmission apparatus if the detected magnetic field value is lower than the reference magnetic field value, wherein the transmission controller stops the transmission of the wireless power signal if the error code has been received, wherein the error code represents the foreign object is detected, and wherein the transmission controller stops the transmission of the wireless power signal when the error code is not received from the wireless power receiving apparatus because of the communication with the wireless power receiving apparatus is not available. - View Dependent Claims (18)
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Specification