Wireless power harvesting and transmission with heterogeneous signals
First Claim
1. A wireless power system comprising:
- at least two mobile devices, each comprising a wireless power harvester; and
a wireless power source having a low power mode and a power transmission mode, the wireless power source configured to utilize less power during the low power mode than during the power transmission mode;
wherein the at least two mobile devices and the wireless power source are configured to communicate using at least a first communication signal and a second communication signal to enable the wireless power source to change between the low power mode and the power transmission mode;
wherein at least one of the at least two mobile devices is assigned a priority based on a characteristic of the first communication signal and the second communication signal with the wireless power source; and
wherein the priority determines a profile of a power transmission during the power transmission mode;
wherein the profile of the power transmission is determined based on an energy profile, the profile of the power transmission comprising amplitude and frequency of the power transmission, and the energy profile comprising an estimation across an interval of at least one characteristic of a signal related to wireless power; and
wherein an amount of power transmitted respectively to each of the at least two mobile devices, at a same time in the power transmission by a single antenna of the wireless power source, is affected by the profile of the power transmission, in accordance with the priority.
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Abstract
The present invention is a wireless power system which includes components which can be recharged by harvesting wireless power, wireless power transmitters for transmitting the power, and devices which are powered from the components. Features such as temperature monitoring, tiered network protocols including both data and power communication, and power management strategies related to both charging and non-charging operations, are used to improve performance of the wireless network. Rechargeable batteries which are configured to be recharged using wireless power have unique components specifically tailored for recharging operations rather than for providing power to a device. A wireless power supply for powering implanted devices benefits from an external patient controller which contains features for adjusting both power transmission and harvesting provided by other components of the wireless power network.
703 Citations
18 Claims
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1. A wireless power system comprising:
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at least two mobile devices, each comprising a wireless power harvester; and a wireless power source having a low power mode and a power transmission mode, the wireless power source configured to utilize less power during the low power mode than during the power transmission mode; wherein the at least two mobile devices and the wireless power source are configured to communicate using at least a first communication signal and a second communication signal to enable the wireless power source to change between the low power mode and the power transmission mode; wherein at least one of the at least two mobile devices is assigned a priority based on a characteristic of the first communication signal and the second communication signal with the wireless power source; and wherein the priority determines a profile of a power transmission during the power transmission mode; wherein the profile of the power transmission is determined based on an energy profile, the profile of the power transmission comprising amplitude and frequency of the power transmission, and the energy profile comprising an estimation across an interval of at least one characteristic of a signal related to wireless power; and wherein an amount of power transmitted respectively to each of the at least two mobile devices, at a same time in the power transmission by a single antenna of the wireless power source, is affected by the profile of the power transmission, in accordance with the priority. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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assigning a first priority based on a first communication signal characteristic of a first mobile device, the first mobile device comprising a first wireless power harvester and configured to communicate with a wireless power source using a first communication signal; assigning a second priority based on a second communication signal characteristic of a second mobile device, the second mobile device comprising a second wireless power harvester and configured to communicate with the wireless power source using a second communication signal; and determining a profile of a power transmission based on the first and second priorities; wherein the profile of the power transmission is determined based on an energy profile, the profile of the power transmission comprising amplitude and frequency of the power transmission, and the energy profile comprising an estimation across an interval of at least one characteristic of a signal related to wireless power; and wherein an amount of power transmitted respectively to each of the first and second mobile devices, at a same time in the power transmission by a single antenna of the wireless power source, is affected by the profile of the power transmission, in accordance with the first and second priorities. - View Dependent Claims (17, 18)
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Specification