Method and apparatus for protecting wireless power receiver from excessive charging temperature
First Claim
1. A wireless power receiver for preventing excessive temperature caused by charging, the wireless power receiver comprising:
- a power receiver configured to receive wireless power from a wireless power transmitter;
a temperature measurement unit configured to measure a temperature of a point in the wireless power receiver during reception of the wireless power; and
a controller configured to;
control a charging power to be provided to a battery of the wireless power receiver,maintain the charging power to be provided to the battery, if the temperature measured by the temperature measurement unit is lower than a preset temperature,decrease a magnitude of the charging power, if a temperature measured by the temperature measurement unit is greater than or equal to the a preset temperature,andstop providing the charging power to the battery, if the temperature measured by the temperature measurement unit is greater than or equal to an over temperature protection (OTP) temperature,wherein the preset temperature is lower than the OTP temperature.
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Accused Products
Abstract
An apparatus and a method for protecting a wireless power receiver from excessive temperature caused by charging are provided. The apparatus includes a power receiver configured to receive wireless power in an alternate current (AC) form from a wireless power transmitter; a temperature measurement unit configured to measure a temperature of a point in the wireless power receiver during reception of the wireless power; and a controller configured to decrease a charging power corresponding to the wireless power, if a temperature measured by the temperature measurement unit exceeds a preset temperature, and to provide the charging power to a battery, if the temperature measured by the temperature measurement unit is lower than the preset temperature.
9 Citations
15 Claims
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1. A wireless power receiver for preventing excessive temperature caused by charging, the wireless power receiver comprising:
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a power receiver configured to receive wireless power from a wireless power transmitter; a temperature measurement unit configured to measure a temperature of a point in the wireless power receiver during reception of the wireless power; and a controller configured to; control a charging power to be provided to a battery of the wireless power receiver, maintain the charging power to be provided to the battery, if the temperature measured by the temperature measurement unit is lower than a preset temperature, decrease a magnitude of the charging power, if a temperature measured by the temperature measurement unit is greater than or equal to the a preset temperature, and stop providing the charging power to the battery, if the temperature measured by the temperature measurement unit is greater than or equal to an over temperature protection (OTP) temperature, wherein the preset temperature is lower than the OTP temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for protecting a wireless power receiver from excessive temperature caused by charging, the method comprising:
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receiving wireless power from a wireless power transmitter; measuring a temperature of a point in the wireless power receiver during reception of the wireless power; controlling a charging power to be provided to a battery of the wireless power receiver; maintaining the charging power to be provided to the battery, if the temperature is lower than a preset temperature; decreasing a magnitude of the charging power, if the temperature is greater than or equal to the preset temperature; and stopping providing the charging power to the battery, if the temperature is greater than or equal to an over temperature protection (OTP) temperature, wherein the preset temperature is lower than the OTP temperature. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification