Methods and apparatus for a modular coil holder for an extended wireless charging roadway assembly

• US 10,027,147 B2
• Filed: 01/20/2016
• Issued: 07/17/2018
• Est. Priority Date: 01/23/2015
• Status: Active Grant

• Current Assignee: WiTricity Corporation
• Original Assignee: Qualcomm, Inc.
• Inventors: Islinger, Simon Peter, Niederhauser, Steven Daniel
• Primary Examiner(s): Donovan, Lincoln
• Assistant Examiner(s): MATTISON, DAVID D
• Application Number:
  US15/002,204
• Publication Number:
  US 20160218534A1
• Time in Patent Office: 909 Days
• Field of Search: 307104
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60L 53/60 Monitoring or controlling charging stations
• CPC Class Codes: B60M 7/003 for vehicles using stored power (e.g. charging stations)
• CPC Class Codes: H01F 27/28 Coils; Windings; Conductive connections
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01F 41/06 Coil winding
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• 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
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A holder configured to hold one or more components of a wireless charging power transfer system is provided. The apparatus comprises a first surface having one or more grooves configured to receive at least a portion of a conductor of a coil that spans the holder and at least one other holder, the coil configured to inductively transfer power via a magnetic field. The apparatus comprises one or more mechanical connectors configured to fasten the holder to the at least one other holder. The apparatus further comprises a plurality of transverse grooves on the first surface that extend in a direction substantially perpendicular to a direction of extension of the one or more grooves, the plurality of transverse grooves configured to guide the conductor of the coil from the holder to the at least one other holder.

Claims

1. A holder configured to hold one or more components of a wireless charging power transfer system, the holder comprising:

a first surface having one or more grooves that extend along at least a portion of the first surface in a first direction and being positioned at a first location, the one or more grooves configured to receive at least a portion of a conductor of a coil that extends along at least a portion of the first surface and at least a portion of at least one other first surface of at least one other holder, the coil configured to inductively transfer power via a magnetic field;

a second surface having a plurality of guides configured to hold a ferrimagnetic structure, the second surface positioned at a second location opposite the first surface; and

one or more mechanical connectors configured to fasten the holder to the at least one other holder,

wherein the plurality of guides holds the ferrimagnetic structure onto the second surface and a second surface of the at least one other holder and wherein the plurality of guides aligns the ferrimagnetic structure along at least a portion of the second surface and at least a portion of the second surface of the at least one other holder in a second direction different from the first direction.

2. The holder of claim 1, further comprising a plurality of transverse grooves on the first surface that extend in a direction substantially perpendicular to a direction of extension of the one or more grooves, the plurality of transverse grooves configured to guide the conductor of the coil from the one or more grooves of the holder to one or more grooves of the at least one other holder.

3. The holder of claim 1, wherein the one or more grooves in the first surface provide a same center-to-center spacing between the coil and adjacent coils when the holder is fastened to the at least one other holder.

4. The holder of claim 1, further comprising the ferrimagnetic structure held by the plurality of guides on the second surface.

5. The holder of claim 1, further configured to support one or more components for transferring power from a power supply to the coil.

6. The holder of claim 1, wherein the holder is disposed in a recessed portion of a former, the recessed portion configured to support the holder.

7. A holder configured to hold one or more components of a wireless charging power transfer system, the holder comprising:

a first surface having one or more grooves that extend along at least a portion of the first surface in a first direction and being positioned at a first location, the one or more grooves configured to receive at least a portion of a conductor of a coil, the coil configured to inductively transfer power via a magnetic field;

a second surface having a plurality of guides configured to hold a ferrimagnetic structure, the second surface positioned at a second location opposite the first surface; and

one or more mechanical connectors configured to fasten the holder to at least one other holder, wherein the holder is further configured to support one or more components for transferring power from a power supply to the coil,

wherein the plurality of guides holds the ferrimagnetic structure onto the second surface and a second surface of the at least one other holder and wherein the plurality of guides aligns the ferrimagnetic structure along at least a portion of the second surface and at least a portion of the second surface of the at least one other holder in a second direction different from the first direction.

8. The holder of claim 7, further comprising a plurality of transverse grooves on the first surface that extend in a direction substantially perpendicular to a direction of extension of the one or more grooves, the plurality of transverse grooves configured to guide the conductor of the coil from the one or more grooves of the holder to one or more grooves of the at least one other holder.

9. The holder of claim 7, wherein the one or more grooves in the first surface provide a same center-to-center spacing between adjacent ones of the coil and a plurality of other coils when the holder is fastened to the at least one other holder.

10. The holder of claim 7, further comprising the ferrimagnetic structure held by the plurality of guides on the second surface.

11. The holder of claim 7, wherein the conductor of a coil spans the holder and the at least one other holder.

12. The holder of claim 7, wherein the holder is disposed in a recessed portion of a former, the recessed portion configured to support the holder.

13. A method for installing a wireless charging power transfer system, the method comprising:

fastening a plurality of holders to one another via one or more mechanical connectors on each of the holders, each of the plurality of holders further comprising;

a first surface having one or more grooves that extend along at least a portion of the first surface in a first direction and being positioned at a first location, the one or more grooves configured to receive at least a portion of a conductor of a coil, and

a second surface having a plurality of guides configured to hold a ferrimagnetic structure, the second surface positioned at a second location opposite the first surface, and

winding a conductor of the coil into the one or more grooves of at least two of the holders such that the coil spans the at least two holders,

wherein the plurality of guides holds the ferrimagnetic structure onto the second surface and a second surface of the at least one other holder and wherein the plurality of guides aligns the ferrimagnetic structure along at least a portion of the second surface and at least a portion of the second surface of the at least one other holder in a second direction different from the first direction.

14. The method of claim 13, further comprising winding the conductor into a plurality of transverse grooves that extend in a direction substantially perpendicular to a direction of extension of the one or more grooves to guide the conductor from the one or more grooves of one holder to the one or more grooves of an adjacent holder.

15. The method of claim 13, further comprising fastening a ferrimagnetic structure to the second surface.

16. The method of claim 13, wherein the one or more grooves in the first surface of each of the plurality of holders are configured to provide a same center-to-center spacing between the coil and an adjacent coil.

17. The method of claim 13, further comprising attaching to the holder one or more components for transferring power from a power supply to the coil.

18. The method of claim 13, further comprising:

providing a former having a recessed portion, and

placing each of the plurality of holders in the recessed portion.

19. The method of claim 18, further comprising placing an aluminum plate in the recessed portion, between the former and the plurality of holders.

20. A holder configured to hold one or more components of a wireless charging power transfer system, the holder comprising:

means for receiving at least a portion of a conductor of a coil on a first surface of the holder that extend along at least a portion of the means for receiving at least a portion of a conductor in a first direction and being positioned at a first location, the coil configured to span at least a portion of the first surface and at least one other first surface of at least one other holder and inductively transfer power via a magnetic field;

means for receiving a ferrimagnetic structure on a second surface having a second location opposite the first surface; and

means for mechanically fastening the holder to the at least one other holder,

wherein the means for receiving a ferrimagnetic structure holds the ferrimagnetic structure onto the second surface and a second surface of the at least one other holder and wherein the means for receiving a ferrimagnetic structure aligns the ferrimagnetic structure along at least a portion of the second surface and at least a portion of the second surface of the at least one other holder in a second direction different from the first direction.

21. The holder of claim 20, further comprising means for guiding the conductor of the coil from the holder to the at least one other holder on the first surface, wherein the means for guiding the conductor of the coil from the holder to the at least one other holder extends in a direction substantially perpendicular to a direction of extension of the means for receiving at least the portion of the conductor of the coil.

22. The holder of claim 20, wherein the means for receiving at least the portion of the conductor of the coil provide a same center-to-center spacing between adjacent ones of the coil and a plurality of other coils when the holder is fastened to the at least one other holder.

23. The holder of claim 20, further comprising the ferrimagnetic structure.

24. The holder of claim 20, further comprising means for supporting one or more components for transferring power from a power supply to the coil.

25. The holder of claim 20, wherein the holder is disposed in a recessed portion of a former, the recessed portion configured to support the holder.

26. The holder of claim 20, wherein the means for receiving at least the portion of the conductor of the coil comprises a plurality of grooves in the first surface of the holder.

27. The holder of claim 21, wherein the means for guiding the conductor of the coil from the holder to the at least one other holder comprise a plurality of transverse grooves in the first surface of the holder.