US Patent No. 10,468,912

CAPACITIVE CONTACTLESS POWERING SYSTEM


Patent No. 10,468,912
Issue Date November 05, 2019
Title Capacitive Contactless Powering System
Inventorship Adrianus Sempel, Waalre (NL)
Eberhard Waffenschmidt, Aachen (DE)
Dave Willem Van Goor, Nederweert (NL)
Henricus Theorodus Van Der Zanden, Sint-Oedenrode (NL)
Assignee SIGNIFY HOLDING B.V., Eindhoven (NL)

Claim of US Patent No. 10,468,912

1. A capacitive powering system, comprising:a pair of receiver electrodes connected to a load and a first inductor;
a pair of transmitter electrodes connected to a driver; and
an insulating layer having a first side and a second side opposite each other, wherein the pair of transmitter electrodes is coupled to the first side of the insulating layer and the pair of receiver electrodes is decoupled from the second side of the insulating layer, such that a capacitive impedance is formed between the pair of transmitter electrodes and the pair of receiver electrodes, wherein a power signal generated by the driver is wirelessly transferred from the pair of transmitter electrodes to the pair of receiver electrodes to power the load with a first power when said pair of receiver electrodes are aligned to overlap with said pair of transmitter electrodes so that a frequency of the power signal matches a series-resonance frequency of the first inductor and the capacitive impedance, and
wherein said system is configured such that misaligning said pair of receiver electrodes to partially overlap with said pair of transmitter electrodes results in said load receiving a total power that is less than said first power.