LOW AC RESISTANCE CONDUCTOR DESIGNS

• US 20140175898A1
• Filed: 02/26/2014
• Published: 06/26/2014
• Est. Priority Date: 09/27/2008
• Status: Active Grant

• Current Assignee: WiTricity Corporation
• Original Assignee: WiTricity Corporation
• Inventors: Kurs, Andre B., Karalis, Aristeidis, Kesler, Morris P., Campanella, Andrew J., Hall, Katherine L., Kulikowski, Konrad J., Soljacic, Marin
• Granted Patent: US 9,601,270 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 2200/12 Bikes
• CPC Class Codes: B60L 2200/22 Microcars, e.g. golf cars
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2260/28 Four wheel or all wheel drive
• CPC Class Codes: B60L 2260/32 Auto pilot mode
• CPC Class Codes: B60L 50/20 using propulsion power generated by humans or animals
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/124 Detection or removal of foreign bodies
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/51 Photovoltaic means
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/64 Optimising energy costs, e.g. responding to electricity rates
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/665 : Methods related to measuring, billing or payment
• CPC Class Codes: B60L 55/00 : Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: H01F 27/2804 : Printed windings
• 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 2310/40 : The network being an on-board power network, i.e. within a vehicle
• CPC Class Codes: H02J 2310/48 : for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 50/12 : of the resonant type
• CPC Class Codes: H02J 50/50 : using additional energy repeaters between transmitting devices and receiving devices
• 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: H02J 7/35 : with light sensitive cells
• CPC Class Codes: H03H 7/40 : Automatic matching of load impedance to source impedance
• CPC Class Codes: H04B 5/0037 : for power transfer
• CPC Class Codes: H04B 5/0075 : using inductive coupling transformers or inductances adapted for inductive coupling H01F38/14
• CPC Class Codes: H04B 5/0093 : with one coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/24 : Inductive coupling
• CPC Class Codes: H04B 5/266 : One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/79 : for data transfer in combination with power transfer
• CPC Class Codes: Y02E 60/00 : Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/167 : Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 10/126 : the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

Described herein are improved configurations for providing a stranded printed circuit board trace comprising, a plurality of conductor layers, a plurality of individual conductor traces on each of the said conductor layers, and a plurality of vias for connecting individual conductor traces on different said conductor layers, the vias located on the outside edges of the stranded trace. The individual conductor traces of each layer may be routed from vias on one side of the stranded printed circuit board trace to vias on the other side in a substantially diagonal direction with respect to the axis of the stranded printed circuit board trace. In embodiments, the stranded printed circuit board trace configuration may be applied to a wireless power transfer system.

Claims

1-25. -25. (canceled)

26. A high-Q self-resonant coil, comprising:

a high-Q inductor coil, with inductance L, formed on a substrate;

comprising

at least two turns of formed conducting material;

wherein a spacing between the at least two turns of the formed conducting material is designed to produce a distributed capacitance, C; and

wherein a resonant frequency, ω

, of the self-resonant coil is substantially equal to 1/(LC)^1/2;

wherein w is an operating frequency of a wireless power transfer system.

27. The self-resonant coil of claim 26, wherein the formed conducting material comprises copper.

28. The self-resonant coil of claim 26, wherein the formed conducting material comprises conducting ink.

29. The self-resonant coil of claim 26, wherein the formed conducting material comprises aluminum.

30. The self-resonant coil of claim 26, wherein the substrate is rigid.

31. The self-resonant coil of claim 26, wherein the substrate is flexible.

32. The self-resonant coil of claim 26, wherein the self-resonant frequency is between 10 kHz and 100 MHz.

33. The self-resonant coil of claim 26, wherein the self-resonant frequency is an ISM frequency.

34. The self-resonant coil of claim 26, wherein the self-resonant frequency is approximately 6.78 MHz.

35. The self-resonant coil of claim 26, wherein the self-resonant frequency is approximately 13.56 MHz.

36. A source element for a non-radiative wireless power source, comprising;

a circuit board comprising at least first and second layers;

wherein the at least first layer comprises an inductive element for generating an oscillating magnetic near-field; and

wherein the at least second other layer comprises a high-Q self-resonant coil.

37. The source element of claim 36, wherein the circuit board is rigid.

38. The source element of claim 36, wherein the circuit board is flexible.

39. The source element of claim 36, further comprising circuit board traces on the at least first layer for placing elements of source resonator power and control circuitry.

40. The source element of claim 37, wherein the elements of source resonator power and control circuitry comprise any of a transistor, a capacitor, an inductor, a diode, and a sensor.

41. A device element for a non-radiative wireless power device, comprising;

a circuit board comprising at least first and second layers;

wherein at least one layer comprises an inductive element for capturing an oscillating magnetic near-field; and

wherein at least one other layer comprises a high-Q self-resonant coil.

42. The device element of claim 41, wherein the circuit board is rigid.

43. The device element of claim 41, wherein the circuit board is flexible.

44. The device element of claim 41 further comprising circuit board traces on the at least first layer for placing elements of device resonator power and control circuitry.

45. The device element of claim 44, wherein the elements of device resonator power and control circuitry comprise any of a transistor, a capacitor, an inductor, a diode, and a sensor.