Method and apparatus for wireless charging using variable switching frequency
AssigneeHyundai Motor Company
InventorsHyun Wook Seong, Woo Young Lee, Gyu Yeong Choe
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Abstract
A wireless charging method performed by a wireless power receiving apparatus for a vehicle includes: producing a resonance between a primary pad located outside of the vehicle and a secondary pad installed in the vehicle based on an initial switching frequency; and tuning a switching frequency of a direct current (DC) to DC (DC-to-DC) converter within a range determined based on the initial switching frequency, according to an output voltage outputted based on a resonance of the secondary pad which is caused by the primary pad.
Claims20
A wireless charging method performed by a wireless power receiving apparatus for a vehicle, the method comprising:
- producing a resonance between a primary pad located outside of the vehicle and a secondary pad installed in the vehicle based on an initial switching frequency;
- and
- tuning a switching frequency of a direct current (DC) to DC (DC-to-DC) converter within a range determined based on the initial switching frequency, according to an output voltage outputted based on a resonance of the secondary pad which is caused by the primary pad.
A wireless power receiving apparatus for a vehicle, the apparatus comprising:
- a secondary pad which is installed in the vehicle and resonates with a primary pad located outside of the vehicle;
- and
- a direct current (DC) to DC (DC-to-DC) converter tuning a switching frequency within a range determined based on an initial switching frequency, according to an output voltage outputted based on a resonance of the secondary pad caused by the primary pad.
A wireless charging system for a vehicle, the system comprising:
- a primary pad located outside of the vehicle to which power is supplied;
- a secondary pad installed in the vehicle which resonates with the primary pad;
- and
- a direct current (DC) to DC (DC-to-DC) converter which is installed in the vehicle and tunes a switching frequency within a range determined based on the initial switching frequency, according to an output voltage outputted based on a resonance of the secondary pad which is caused by the primary pad.
Dependencies are inferred from the claim text.