ADAPTIVE WIRELESS ENERGY TRANSFER SYSTEM
First Claim
Patent Images
1. A charging base, comprising:
- an adaptable power converter configurable between first and second modes to convert power from a power supply system in a transmit mode; and
a charging base antenna configured for resonance and operably coupled to the adaptable power converter and configured to transfer wireless energy with a remote antenna,the modes selectable based on a change in coupling coefficient between the charging base antenna and the remote antenna.
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Abstract
Exemplary embodiments are directed to wireless power transfer using magnetic resonance in a coupling mode region between a charging base (CB) and a remote system such as a battery electric vehicle (BEV). The wireless power transfer can occur from the CB to the remote system and from the remote system to the CB. Load adaptation and power control methods can be employed to adjust the amount of power transferred over the wireless power link, while maintaining transfer efficiency.
248 Citations
52 Claims
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1. A charging base, comprising:
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an adaptable power converter configurable between first and second modes to convert power from a power supply system in a transmit mode; and a charging base antenna configured for resonance and operably coupled to the adaptable power converter and configured to transfer wireless energy with a remote antenna, the modes selectable based on a change in coupling coefficient between the charging base antenna and the remote antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A remote subsystem, comprising:
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an adaptable power converter configurable between first and second modes to convert power from a remote energy storage system in a receive mode; and a remote antenna configured for resonance and operably coupled to the adaptable power converter and configured to receive wireless energy from a charging base antenna, the modes selectable based on a change in coupling coefficient between the remote antenna and the charging base antenna. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method, comprising:
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converting, by an adaptable power converter, a power from a power supply system to a power at an operating frequency for transfer of wireless energy; generating an electromagnetic field by a transmit antenna resonant near the operating frequency to transfer the wireless energy to a receive antenna positioned within a near field coupling-mode region, the near field coupling-mode region configured to be accessible by the receive antenna; and configuring the adaptable power converter to one of a first mode of operation to a second mode of operation based on a measure indicative of a coupling coefficient between the transmit antenna and the receive antenna. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. An apparatus, comprising:
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means for converting, by an adaptable power converter, a power from a power supply system to a power at an operating frequency for transfer of wireless energy; means for generating an electromagnetic field by a transmit antenna resonant near the operating frequency to transfer the wireless energy to a receive antenna positioned within a near field coupling-mode region, the near field coupling-mode region configured to be accessible by the receive antenna; and means for configuring the adaptable power converter to one of a first mode of operation to a second mode of operation based on a measure indicative of a coupling coefficient between the transmit antenna and the receive antenna. - View Dependent Claims (48, 49)
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50. A method, comprising:
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converting, by an adaptable power converter, a power from a power supply system to a power at an operating frequency for transfer of wireless energy; generating an electromagnetic field by a transmit antenna resonant near the operating frequency to transfer the wireless energy to a receive antenna positioned within a near field coupling-mode region, the near field coupling-mode region configured to be accessible by the receive antenna; and configuring the adaptable power converter to one of a first mode of operation to a second mode of operation based on a distance between the transmit antenna and the receive antenna.
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51. An apparatus, comprising:
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means for converting, by an adaptable power converter, a power from a power supply system to a power at an operating frequency for transfer of wireless energy; means for generating an electromagnetic field by a transmit antenna resonant near the operating frequency to transfer the wireless energy to a receive antenna positioned within a near field coupling-mode region, the near field coupling-mode region configured to be accessible by the receive antenna; and means for configuring the adaptable power converter to one of a first mode of operation to a second mode of operation based on a distance between the transmit antenna and the receive antenna. - View Dependent Claims (52)
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Specification