Non-contact power charging system and control method thereof
First Claim
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1. An apparatus for A device configured to wirelessly receiving receive power from a wireless power transmission apparatus, the device comprising:
- a charge core configured to generate an induced current in response to an electromotive force exerted by a the wireless power transmission apparatus;
a rectifier connected to the charge core to rectify the induced current and configured to generate a power signal;
a charge circuit configured to receive the power signal and charge a battery cell with the power signal;
a power monitoring module for monitoring configured to monitor a voltage level of the power signal and determine by determining whether the voltage level is between a lower limit and an upper limit of a predetermined reference range; and
a device controller configured to generate a voltage adjustment signal for requesting to request the transmission apparatus to increase a level of the electromotive force when the voltage level is lower than the lower limit of the predetermined reference range and to decrease the level of the electromotive force when the voltage level is higher than the upper limit of the predetermined reference range,wherein the device controller is configured to transmit the voltage adjustment signal to the transmission apparatus.
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Abstract
A non-contact power charging, in which power transmission can be interrupted when foreign materials are deposited on a charge plate of the non-contact power charging system. A charging operation can be continuously maintained at a stable voltage even if a non-contact power receiving apparatus moves by touching or displacement on the charge plate of the non-contact power charging system in the charging operation. Charging efficiency is improved.
21 Citations
25 Claims
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1. An apparatus for A device configured to wirelessly receiving receive power from a wireless power transmission apparatus, the device comprising:
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a charge core configured to generate an induced current in response to an electromotive force exerted by a the wireless power transmission apparatus; a rectifier connected to the charge core to rectify the induced current and configured to generate a power signal; a charge circuit configured to receive the power signal and charge a battery cell with the power signal; a power monitoring module for monitoring configured to monitor a voltage level of the power signal and determine by determining whether the voltage level is between a lower limit and an upper limit of a predetermined reference range; and a device controller configured to generate a voltage adjustment signal for requesting to request the transmission apparatus to increase a level of the electromotive force when the voltage level is lower than the lower limit of the predetermined reference range and to decrease the level of the electromotive force when the voltage level is higher than the upper limit of the predetermined reference range, wherein the device controller is configured to transmit the voltage adjustment signal to the transmission apparatus. - View Dependent Claims (2, 3, 4, 5)
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6. A method of charging an apparatus, comprising:
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generating an induced current in a charge core in response to an electromotive force exerted by a wireless power transmission apparatus; rectifying the induced current to generate a power signal for charging a battery cell; monitoring a voltage level of the power signal and determining whether the voltage level is between a lower limit and an upper limit of a predetermined reference range; generating a voltage adjustment signal for requesting the transmission apparatus to increase a level of the electromotive force when the voltage level is lower than the lower limit of the predetermined reference range and to decrease the level of the electromotive force when the voltage level is higher than the upper limit of the predetermined reference range; and transmitting the voltage adjustment signal to the transmission apparatus. - View Dependent Claims (7, 8)
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9. An apparatus for A device configured to wirelessly receiving receive power from a wireless power transmission apparatus, the device comprising:
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a charge core configured to generate an induced current in response to an electromotive force exerted by a the wireless power transmission apparatus; a rectifier connected to the charge core to rectify the induced current and configured to generate a power signal; a charge circuit configured to receive the power signal and charge a battery cell with the power signal; a power monitoring module for monitoring configured to monitor a voltage level of the power signal and determine by determining whether the voltage level is within a predetermined reference range; and a device controller configured to generate a voltage adjustment signal for requesting to request the transmission apparatus to change a characteristic of the electromotive force when the voltage level of the power signal falls outside of the predetermined reference range, wherein, when the voltage level of the power signal is lower than a lower limit of the predetermined reference range, the voltage adjustment signal generated by the device controller comprises; a power-up signal for requesting to indicate to the transmission apparatus to increase a level of the electromotive force when the voltage level of the power signal is lower than a lower limit of the predetermined reference range to be increase; and wherein, when the voltage level of the power signal is higher than an upper limit of the predetermined reference range, the voltage adjustment signal generated by the device controller comprises; a power-down signal for requesting to indicate to the transmission apparatus to decrease the a level of the electromotive force when the voltage level of the power signal is higher than an upper limit of the predetermined reference range to be decreased. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of charging an apparatus, comprising:
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generating an induced current in a charge core in response to an electromotive force exerted by a wireless power transmission apparatus; rectifying the induced current to generate a power signal for charging a battery cell; monitoring a voltage level of the power signal and determining whether the voltage level is within a predetermined reference range; generating a voltage adjustment signal for requesting the transmission apparatus to change a characteristic of the electromotive force when the voltage level of the power signal falls outside of the predetermined reference range; and transmitting the voltage adjustment signal to the transmission apparatus, wherein, when the voltage level of the power signal is lower than a lower limit of the predetermined reference range, the voltage adjustment signal comprises; a power-up signal for requesting indicating to the transmission apparatus to increase a level of the electromotive force when the voltage level of the power signal is lower than a lower limit of the predetermined reference range to be increased; and wherein, when the voltage level of the power signal is higher than an upper limit of the predetermined reference range, the voltage adjustment signal comprises; a power-down signal for requesting indicating to the transmission apparatus to decrease the level of the electromotive force when the voltage level of the power signal is higher than an upper limit of the predetermined reference range to be decreased. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A device configured to wirelessly receive power from a wireless power transmission apparatus, the device comprising:
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a charge core configured to an induced current in response to an electromotive force exerted by the wireless power transmission apparatus; a rectifier connected to the charge core and configured to generate a power signal by rectifying the induced current; a power monitoring module to monitor a voltage level of the power signal by determining whether the voltage level is between a lower limit and an upper limit of a predetermined reference range; and a device controller to generate a voltage adjustment signal to request the wireless power transmission apparatus to increase a level of the electromotive force when the voltage level is lower than the lower limit of the predetermined reference range and to decrease the level of the electromotive force when the voltage level is higher than the upper limit of the predetermined reference range; wherein the device controller is to transmit the voltage adjustment signal to the wireless power transmission apparatus.
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22. A device configured to wirelessly receive power from a wireless power transmission apparatus, the device comprising:
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a charge core to receive an ID call signal from the wireless power transmission apparatus, transmit a unique ID to the wireless power transmission apparatus, and generate an induced current in response to an electromotive force exerted by the wireless power transmission apparatus; a device controller to generate information on the unique ID in response to the ID call signal; a rectifier connected to the charge core and configured to generate a received power signal by rectifying the induced current; a power monitoring module to monitor a voltage level of the power signal by determining whether the voltage level is different from a predetermined reference voltage, wherein the device controller is configured to use load modulation to transmit an adjustment signal to the wireless power transmission apparatus to change a characteristic of the electromotive force, and wherein, if the voltage level of the received power signal is lower than the predetermined reference voltage, the adjustment signal to be generated by the device controller comprises; a power-up signal to indicate a level of the electromotive force to be increased; wherein, if the voltage level of the received power signal is equal to the predetermined reference voltage, the adjustment signal to be generated by the device controller comprises; a normal reception signal which indicates normal reception; and wherein, if the voltage level of the received power signal is higher than the predetermined reference voltage, the adjustment signal to be generated by the device controller comprises; a power-down signal to indicate a level of the electromotive force to be decreased. - View Dependent Claims (23)
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24. A method of charging an apparatus, comprising:
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receiving an ID call signal through a charge core from a wireless power transmission apparatus; generating information on a unique ID in response to the ID call signal; transmitting the unique ID through the charge core to the wireless power transmission apparatus; generating an induced current in the charge core in response to an electromotive force exerted by the wireless power transmission apparatus; rectifying the induced current to generate a received power signal; monitoring a voltage level of the received power signal and determining whether the voltage level is different from a predetermined reference voltage; generating an adjustment signal regarding whether to change or not a characteristic of the electromotive force by using a load modulation; and transmitting the adjustment signal through the charge core to the wireless power transmission apparatus, wherein, when the voltage level of the received power signal is lower than the predetermined reference voltage, the adjustment signal comprises; a power-up signal which indicates a level of the electromotive force to be increased; wherein, when the voltage level of the received power signal is equal to the predetermined reference voltage, the adjustment signal comprises; a normal reception signal which indicates normal reception; and wherein, when the voltage level of the received power signal is higher than the predetermined reference voltage, the adjustment signal comprises; a power-down signal which indicates a level of the electromotive force to be decreased. - View Dependent Claims (25)
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Specification