Apparatus for receiving wireless power and method of controlling same
First Claim
1. A reception device for receiving wireless power, the reception device comprising:
- a power reception circuit configured to wirelessly receive power from a transmission device, rectify the received power, and output the rectified power;
a charger configured to process the rectified power received from the power reception circuit and charge a battery of the reception device or output the rectified power to a system of the reception device; and
a control circuit configured to, when an event for changing an input current limit of the charger is detected, gradually change the input current limit of the charger by stepping up or stepping down the input current limit to one or more intermediary values until the input current limit reaches a predetermined value,wherein when the event for changing the input current limit of the charger corresponds to a change of an input current of the charger over a first time period that causes a disconnection between the reception device and the transmission device, the input current of the charger is gradually changed over a second time period longer than the first time period, such that connection between the reception device and the transmission device is maintained.
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Accused Products
Abstract
A reception device for receiving wireless power may include: a power reception circuit configured to wirelessly receive power from a transmission device, rectify the received power, and output the rectified power; a charger configured to process the rectified power received from the power reception circuit and charge a battery of the reception device or output the rectified power to a system of the reception device; and a control circuit configured to, when an event for changing an input current limit of the charger is detected, gradually change the input current limit of the charger by stepping up or stepping down the input current limit to one or more intermediary values until the input current limit reaches a predetermined value.
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Citations
32 Claims
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1. A reception device for receiving wireless power, the reception device comprising:
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a power reception circuit configured to wirelessly receive power from a transmission device, rectify the received power, and output the rectified power; a charger configured to process the rectified power received from the power reception circuit and charge a battery of the reception device or output the rectified power to a system of the reception device; and a control circuit configured to, when an event for changing an input current limit of the charger is detected, gradually change the input current limit of the charger by stepping up or stepping down the input current limit to one or more intermediary values until the input current limit reaches a predetermined value, wherein when the event for changing the input current limit of the charger corresponds to a change of an input current of the charger over a first time period that causes a disconnection between the reception device and the transmission device, the input current of the charger is gradually changed over a second time period longer than the first time period, such that connection between the reception device and the transmission device is maintained. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of controlling a reception device for receiving wireless power, the method comprising:
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wirelessly receiving power from a transmission device, and rectifying and outputting the received power; processing the rectified power to charge a battery of the reception device or outputting the rectified power to a system of the reception device; and when an event for changing an input current limit of a charger is detected, gradually changing the input current limit of the charger by stepping up or stepping down the input current limit to one or more intermediary values until the input current limit reaches a predetermined value, wherein when the event for changing the input current limit of the charger corresponds to a change of an input current of the charger over a first time period that causes a disconnection between the reception device and the transmission device, the input current of the charger is gradually changed over a second time period longer than the first time period, such that connection between the reception device and the transmission device is maintained. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A reception device for receiving wireless power, the reception device comprising:
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a power reception circuit configured to wirelessly receive power from a transmission device, and rectify and output the received power; a charger configured to process the rectified power received from the power reception circuit and charge a battery of the reception device or output the power to a system of the reception device; a temperature sensor; and a control circuit configured to, when a temperature sensed by the temperature sensor exceeds a preset threshold value, control to increase an output voltage of the power reception circuit to a preset value.
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30. A reception device for receiving wireless power, the reception device comprising:
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a power reception circuit configured to wirelessly receive power from a transmission device and comprising a rectifier to rectify the received power; a charger configured to process the rectified power received from the power reception circuit and charge a battery of the reception device or output the power to a system of the reception device; and a control circuit configured to set a headroom value between an output voltage of the rectifier and an output voltage of the power reception circuit as a first value for a first period during which the reception device is recognized by the transmission device and set the headroom value as a second value for a second period during which the reception device wirelessly receives the power from the transmission device. - View Dependent Claims (31)
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32. A reception device for receiving wireless power, the reception device comprising:
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a power reception circuit configured to wirelessly receive power from a transmission device and comprising a rectifier to rectify the received power; a communication module; a charger configured to process the rectified power received from the power reception circuit and charge a battery of the reception device or output the power to a system of the reception device; and a control circuit configured to, when switching of a charging mode of the charger from a Constant Current (CC) mode to a Constant Voltage (CV) mode is detected, control the communication module to transmit a request for resetting a foreign material detection setting value to the transmission device.
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Specification