Packaging and details of a wireless power device
First Claim
Patent Images
1. An apparatus configured to transmit power via a magnetic field, the apparatus comprising:
- an antenna circuit configured to inductively transmit power via the magnetic field at a magnetic field strength level sufficient to charge or power a receiver device;
a presence detection sensor configured to use a sensor signal other than the transmitted power and which is configured to sense a movement of a living being; and
a controller configured to adjust the magnetic field strength level in response to detecting the presence of the living being, the controller further configured to provide, during a time period when the magnetic field strength is adjusted to a reduced level in response to detecting the presence of the living being, an indication that the antenna circuit is positioned relative to the receiver device to transmit a sufficient level of power to the receiver device.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless power system includes a power source, power receiver, and components thereof. The system can also include a parasitic antenna that can improve the coupling to the power source in various modes. The antenna can have both a variable capacitor and a variable inductor, and both of those can be changed in order to change characteristics of the matching.
-
Citations
23 Claims
-
1. An apparatus configured to transmit power via a magnetic field, the apparatus comprising:
-
an antenna circuit configured to inductively transmit power via the magnetic field at a magnetic field strength level sufficient to charge or power a receiver device; a presence detection sensor configured to use a sensor signal other than the transmitted power and which is configured to sense a movement of a living being; and a controller configured to adjust the magnetic field strength level in response to detecting the presence of the living being, the controller further configured to provide, during a time period when the magnetic field strength is adjusted to a reduced level in response to detecting the presence of the living being, an indication that the antenna circuit is positioned relative to the receiver device to transmit a sufficient level of power to the receiver device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 21)
-
-
9. A method of transmitting power via a magnetic field, the method comprising:
-
inductively transmitting power from an antenna circuit via the magnetic field at a magnetic field strength level sufficient to charge or power a receiver device; detecting a presence of a living being using a movement detection sensor which uses a sensor signal other than the transmitted power; adjusting the magnetic field strength level in response to detecting the presence of the living being; and during a time period when the magnetic field strength is adjusted in response to detecting the presence of the living being, producing an indication that the antenna circuit is positioned relative to the receiver device to transmit a sufficient level of power to the receiver device. - View Dependent Claims (10, 11, 12, 13, 14, 22)
-
-
15. An apparatus configured to transmit power via a magnetic field, the apparatus comprising:
-
means for inductively transmitting power via the magnetic field at a magnetic field strength level sufficient to charge or power a receiver device; means for sensing a presence of a living being using a movement detection sensor which uses a sensor signal other than the transmitted power; means for adjusting the magnetic field strength level in response to detecting the presence of the living being; and means for providing, during a time period when the magnetic field strength is adjusted in response to detecting the presence of the living being, an indication that the means for inductively transmitting power is positioned relative to the receiver device to transmit a sufficient level of power to the receiver device. - View Dependent Claims (16, 17, 18, 19, 20, 23)
-
Specification