WIRELESS POWER TRANSFER SYSTEM
First Claim
Patent Images
1. A wireless power transfer system including:
- a. a power transmitter including;
i. a magnetically permeable transmitter core having a base portion and an axial core portion extending away therefrom along a magnetic field propagation axis, wherein the base portion extends further away from the magnetic field propagation axis than the axial core portion;
ii. transmitter windings provided about the axial core portion; and
iii. an AC power supply driving the windings to produce an oscillating magnetic field; and
b. a power receiver including;
i. a magnetically permeable receiver core having a base portion and an axial core portion extending away therefrom along a magnetic field reception axis, wherein the base portion extends further away from the magnetic field reception axis than the axial core portion;
ii. receiver windings provided about the axial core portion; and
iii. a power receiver circuit receiving an AC current from the windings induced by the oscillating magnetic field.
4 Assignments
0 Petitions
Accused Products
Abstract
A wireless power transfer system including a power transmitter and power receiver including magnetically permeable cores having a base portion and an axial core portion extending away therefrom with windings provided upon the axial core portion. The arrangement is particularly suited for use in wireless power connectors.
-
Citations
31 Claims
-
1. A wireless power transfer system including:
-
a. a power transmitter including; i. a magnetically permeable transmitter core having a base portion and an axial core portion extending away therefrom along a magnetic field propagation axis, wherein the base portion extends further away from the magnetic field propagation axis than the axial core portion; ii. transmitter windings provided about the axial core portion; and iii. an AC power supply driving the windings to produce an oscillating magnetic field; and b. a power receiver including; i. a magnetically permeable receiver core having a base portion and an axial core portion extending away therefrom along a magnetic field reception axis, wherein the base portion extends further away from the magnetic field reception axis than the axial core portion; ii. receiver windings provided about the axial core portion; and iii. a power receiver circuit receiving an AC current from the windings induced by the oscillating magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
- 28. A magnetically permeable core for use in a wireless power transfer system, including a base having first and second portions extending away therefrom, wherein the first portion extends further from the base than the second portion such as to maintain an effective flux linkage throughout a range of relative displacement of a receiving core from a transmitting core and wherein the core includes one or more graduated transitions between the base portion and the axial core portion where the direction of the main magnetic flux path changes
Specification