TECHNIQUES FOR EFFICIENT POWER TRANSFERS IN A CAPACITIVE WIRELESS POWERING SYSTEM
First Claim
1. A capacitive powering system, comprising:
- a low power driver;
a high power driver;
a plurality of pairs of transmitter electrodes separated into a plurality of power sub-areas, wherein the plurality of power sub-areas include at least a group of high power sub-areas connected to the high power driver and a group of low power sub-areas connected to the low power driver; and
an insulating layer having a first side and a second side opposite to each other, wherein the pairs of the plurality of transmitter electrodes are coupled to the first side of the insulating layer, wherein the system is configured to form a capacitive impedance between the pairs of the plurality of transmitter electrodes and a plurality of pairs of receiver electrodes placed in proximity to the second side of the insulating layer, each pair of receiver electrodes is connected in series to a load through an inductor to resonate at a different series-resonance frequency of the of the inductor and the capacitive impedance, thereby wirelessly transferring power from a pair of transmitter electrodes to a respective pair of receiver electrodes to power the load connected to the pair of receiver electrodes.
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Accused Products
Abstract
A capacitive powering system (100) comprises a low power driver (111), a high power driver (112), a plurality of pairs of transmitter electrodes separated into a plurality of power sub-areas (210-1, 210-N) including at least a group of high power sub-areas (210-1, 210-M) connected to the high power driver and a group of low power sub-areas (210-M+1, 210-N) connected to the low power driver, and an insulating layer (130) having a first side and a second side opposite to each other, the pairs of plurality of transmitter electrodes are coupled to the first side of the insulating layer. The system is configured to form a capacitive impedance between the pairs of plurality of transmitter electrodes and a plurality of pairs of receiver electrodes (141, 144) placed in proximity to the second side of the insulating layer to wirelessly power each load connected to each of the pair of receiver electrodes.
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Citations
15 Claims
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1. A capacitive powering system, comprising:
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a low power driver; a high power driver; a plurality of pairs of transmitter electrodes separated into a plurality of power sub-areas, wherein the plurality of power sub-areas include at least a group of high power sub-areas connected to the high power driver and a group of low power sub-areas connected to the low power driver; and an insulating layer having a first side and a second side opposite to each other, wherein the pairs of the plurality of transmitter electrodes are coupled to the first side of the insulating layer, wherein the system is configured to form a capacitive impedance between the pairs of the plurality of transmitter electrodes and a plurality of pairs of receiver electrodes placed in proximity to the second side of the insulating layer, each pair of receiver electrodes is connected in series to a load through an inductor to resonate at a different series-resonance frequency of the of the inductor and the capacitive impedance, thereby wirelessly transferring power from a pair of transmitter electrodes to a respective pair of receiver electrodes to power the load connected to the pair of receiver electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification