Increasing efficiency of wireless power transfer
First Claim
1. A method comprising:
- initiating a wireless power transfer from a charging station to a portable electronic device via a wireless power link;
receiving at least one parameter regarding the portable electronic device at the charging station via a wireless communication link in response to initiation of the wireless power transfer, the at least one parameter including a frequency parameter that specifies a resonant frequency of the portable electronic device; and
increasing efficiency of the wireless power transfer based on the at least one parameter, wherein increasing the efficiency of the wireless power transfer includes changing a frequency at which a non-radiative magnetic field, which mediates the wireless power transfer, oscillates to be substantially equal to the resonant frequency of the portable electronic device.
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Accused Products
Abstract
Techniques are described herein that are capable of increasing efficiency of wireless power transfer. A wireless power transfer system includes features that allow the system to be deployed in public spaces such as airports or in commercial establishments such as restaurants or hotels to allow a user to recharge one or more portable electronic devices while away from home. To accommodate wireless recharging of a variety of device types and states, the system may receive parameters and/or state information associated with a portable electronic device to be recharged and may control the wireless power transfer in accordance with such parameters and/or state information. For instance, the system may increase efficiency of the wireless power transfer based on such parameters and/or state information. The system may also provide a secure and efficient means for obtaining required payment information from the user prior to the wireless power transfer, thereby facilitating fee-based recharging.
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Citations
21 Claims
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1. A method comprising:
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initiating a wireless power transfer from a charging station to a portable electronic device via a wireless power link; receiving at least one parameter regarding the portable electronic device at the charging station via a wireless communication link in response to initiation of the wireless power transfer, the at least one parameter including a frequency parameter that specifies a resonant frequency of the portable electronic device; and increasing efficiency of the wireless power transfer based on the at least one parameter, wherein increasing the efficiency of the wireless power transfer includes changing a frequency at which a non-radiative magnetic field, which mediates the wireless power transfer, oscillates to be substantially equal to the resonant frequency of the portable electronic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a wireless power transfer component configured to wirelessly transfer power to a portable electronic device via a wireless power link; a parameter analysis component configured to analyze at least one parameter received via a wireless communication link regarding the portable electronic device with respect to the wireless transfer of the power, the parameter analysis component including a field generation component configured to generate a magnetic field that is used to wirelessly transfer the power to the portable electronic device, the at least one parameter including a first parameter that specifies a resonant frequency of the portable electronic device; and an efficiency improvement component configured to increase efficiency with respect to the wireless transfer of the power based on analysis of the at least one parameter, the efficiency improvement component including a field manipulation component configured to change a characteristic of the magnetic field to increase the efficiency with respect to the wireless transfer of the power based on the analysis of the at least one parameter, the field manipulation component being configured to change a frequency at which the magnetic field oscillates to be substantially equal to the resonant frequency of the portable electronic device specified by the first parameter. - View Dependent Claims (11, 12, 13, 15, 16, 17)
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14. A system comprising:
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a wireless power transfer component configured to wirelessly transfer power to a portable electronic device via a wireless power link, the wireless power transfer component including a transfer element that generates a magnetic field for performing the wireless transfer of the power; a parameter analysis component configured to analyze at least one parameter received via a wireless communication link regarding the portable electronic device with respect to the wireless transfer of the power, the at least one parameter including a position parameter that specifies a position of the portable electronic device; and an efficiency improvement component configured to increase efficiency with respect to the wireless transfer of the power based on analysis of the at least one parameter, the efficiency improvement component being configured to change an orientation of the transfer element based on the position parameter to increase inductive coupling between the transfer element and a receiving element of the portable electronic device. - View Dependent Claims (18, 19, 20, 21)
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Specification