Auto-tunable wireless charger
AssigneeHoneywell International Inc.
InventorsGlen Backes, Christian Larson
Life of this patent
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Abstract
Devices, methods, systems, and computer-readable media for an auto-tunable wireless charger are described herein. One or more embodiments include a tuner comprising a directional coupler connected between a frequency generator and a tuning cap to receive reflections on a transmit line of the directional coupler, and a controller coupled to the directional coupler and the tuning cap to monitor the reflections on the transmit line and to adjust the tuning cap based on the monitored reflections on the transmit line.
Claims18
A tuner, comprising:
- a directional coupler connected between a frequency generator and a tuning cap to receive reflections on a transmit line of the directional coupler;
- a controller coupled to the directional coupler and the tuning cap to monitor the reflections on the transmit line and to adjust the tuning cap based on the monitored reflections on the transmit line;
- and
- a capacitive wireless power transfer device coupled to the tuning cap to transmit the monitored reflections on the transmit line to a wireless power receiving device.
A system for an auto-tunable wireless charger, comprising:
- a wireless charging device comprising:
- a frequency generator to generate a frequency within a frequency range;
- a directional coupler connected to the frequency generator to direct a first portion of the frequency to a capacitive wireless power transfer device and a second portion of the frequency to a controller;
- a tuning cap coupled to the capacitive wireless power transfer device and the controller to alter an impedance based on reflections on a transmit line of the directional coupler;
- and
- a device to receive a load from the wireless charging device.
A system for an auto-tunable wireless charger, comprising:
- a wireless charging device comprising:
- a frequency generator to generate a frequency within a frequency range;
- a directional coupler connected to the frequency generator to direct a first portion of the frequency to a capacitive wireless power transfer device and a second portion of the frequency to a controller;
- and
- a tuning cap coupled to the capacitive wireless power transfer device and the controller to alter an impedance based on reflections on a transmit line of the directional coupler;
- a wireless receiving device comprising:
- a receiving antenna to receive the frequency from the capacitive wireless power transfer device during a charging cycle;
- a converter coupled to the receiving antenna to convert the frequency to electric current;
- and
- an electrical storage device coupled to the converter to receive the electric current, wherein a load corresponding to the electrical storage device changes throughout the charging cycle.
Dependencies are inferred from the claim text.