Wireless energy transfer methods and designs for implantable electronics and devices include, in at least one aspect, a source resonator external to a patient, a device resonator coupled to an implantable device and being internal to the patient, a temperature sensor, and a tunable component coupled
Wireless energy transfer methods and designs for implantable electronics and devices include, in at least one aspect, a source resonator external to a patient, a device resonator coupled to an implantable device and being internal to the patient, a temperature sensor, and a tunable component coupled to the device resonator, wherein the tunable component is adjusted to detune a resonant frequency in response to measurement from the temperature sensor, and wherein a strength of the oscillating magnetic fields generated by the source resonator is adjusted to increase power output to maintain a level of power captured by the device resonator, thereby compensating for reduced efficiency resulting from detuning of the device resonator via the tunable component.
대표청구항▼
1. A wireless energy transfer system for powering devices implanted in a patient comprising: a high-Q source resonator having a first resonant frequency, the source resonator being external to the patient, coupled to a power source, and configured to generate oscillating magnetic fields,a high-Q dev
1. A wireless energy transfer system for powering devices implanted in a patient comprising: a high-Q source resonator having a first resonant frequency, the source resonator being external to the patient, coupled to a power source, and configured to generate oscillating magnetic fields,a high-Q device resonator having a second resonant frequency, the device resonator coupled to an implantable device requiring a supply power, the device resonator being internal to the patient, and configured to capture the oscillating magnetic fields generated by the source resonator,a temperature sensor, positioned to measure the temperature of the device resonator, anda tunable component coupled to the device resonator,wherein the tunable component is adjusted to detune the second resonant frequency away from the first resonant frequency in response to the measurement from the temperature sensor, andwherein a strength of the oscillating magnetic fields generated by the source resonator is adjusted to increase power output to maintain a level of power captured by the device resonator, thereby compensating for reduced efficiency resulting from detuning of the device resonator via the tunable component. 2. The wireless energy transfer system of claim 1, wherein the tunable component is adjusted to detune the second resonant frequency above the first resonant frequency. 3. The wireless energy transfer system of claim 1, wherein the tunable component is adjusted to detune the second resonant frequency below the first resonant frequency. 4. The wireless energy transfer system of claim 1, wherein the tunable component is adjusted to maintain the temperature of the device resonator below 50 degrees Celsius. 5. The wireless energy transfer system of claim 1, wherein the tunable component is a capacitor. 6. The wireless energy transfer system of claim 1, wherein the tunable component is an inductor. 7. The wireless energy transfer system of claim 1, wherein the device resonator is configured to continuously monitor temperatures of components of the device resonator and trends of the temperatures of the components, and adjust one or more frequencies and values of the components to stabilize the temperature of the device resonator. 8. The wireless energy transfer system of claim 1, wherein the strength of the oscillating magnetic fields generated by the source resonator is adjusted by changing the driving voltage of the source resonator. 9. The wireless energy transfer system of claim 1, wherein the strength of the oscillating magnetic fields generated by the source resonator is adjusted by changing the driving current of the source resonator. 10. The wireless energy transfer system of claim 1, wherein the source resonator and the device resonator have a Q>100. 11. The wireless energy transfer system of claim 1, wherein the device resonator is detuned incrementally until the temperature of the device resonator stabilizes. 12. The wireless energy transfer system of claim 11, wherein frequency is detuned by 1% or more. 13. The wireless energy transfer system of claim 11, wherein frequency is detuned in increments of 1 kHz or more. 14. The wireless energy transfer system of claim 1, wherein the system is tuned to increase overall heat dissipation by reducing heat dissipation in the device resonator and increasing heat dissipation occurring in the source resonator, and the system comprises an active cooling system for the source resonator. 15. The wireless energy transfer system of claim 14, wherein the active cooling system for the source resonator comprises a fan. 16. The wireless energy transfer system of claim 15, wherein the active cooling system for the source resonator is configured to safely dissipate 5 watts or more of heat. 17. The wireless energy transfer system of claim 14, wherein the active cooling system for the source resonator comprises a water cooling system. 18. The wireless energy transfer system of claim 17, wherein the active cooling system for the source resonator is configured to safely dissipate 15 watts or more of power.
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