COIL TOPOLOGIES FOR INDUCTIVE POWER TRANSFER

• US 20180137972A1
• Filed: 11/03/2017
• Published: 05/17/2018
• Est. Priority Date: 12/17/2013
• Status: Active Grant

• Current Assignee: WiTricity Corporation
• Original Assignee: Qualcomm, Inc.
• Inventors: Widmer, Hans Peter, Keeling, Nicholas A., Beaver, Jonathan
• Granted Patent: US 10,340,078 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

This disclosure provides systems, methods and apparatus including a magnetic flux device configured to transmit or receive magnetic flux to or from a space beyond the magnetic flux device. In certain configurations, the magnetic flux device can include a first coil with a first layer and second layer, a second coil with a third layer and fourth layer, and a magnetically permeable material with the first coil extending over a first edge of the magnetically permeable material and the second coil extending over a second edge of the magnetically permeable material. In certain other configurations, the magnetic flux device can include a first conductive structure including a first coil and a second coil enclosing a first area and a second area, respectively. The magnetic flux device can further include a second conductive structure with at least a first planar portion of the first conductive structure being substantially coplanar with a second planar portion of the second conductive structure.

Claims

1. A magnetic flux device configured to transmit or receive magnetic flux to or from a space beyond the magnetic flux device, the magnetic flux device comprising:

at least a first electrically conductive coil and a second electrically conductive coil, the first coil having a first layer and second layer, the second coil having a third layer and fourth layer, the first layer substantially coplanar with the third layer; and

a magnetically permeable magnetically permeable material having a substantially planar first surface, a second surface adjoined to the first surface at a first edge, and a third surface adjoined to the first surface at a second edge, the first coil extending over the first edge and intersecting a plane of the first surface, the second coil extending over the second edge and intersecting the plane of the first surface.