Apparatus for providing concentrated inductive power transfer

• US 9,441,603 B2
• Filed: 08/30/2013
• Issued: 09/13/2016
• Est. Priority Date: 09/05/2012
• Status: Active Grant

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Khan, Aftab Ali, Galigekere, Veda Prakash, Bhattacharya, Madhur
• Primary Examiner(s): Muralidar, Richard V
• Application Number:
  US14/014,802
• Publication Number:
  US 20140060505A1
• Time in Patent Office: 1,110 Days
• Field of Search: 320/108, 320/109
• US Class Current: 1/1
• CPC Class Codes: B60L 2200/12 Bikes
• 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: F02P 7/00 Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices advancing or retarding ignition or control therefor F02P5/00; such devices per se, see the relevant classes of Section H, e.g. rotary switches H01H19/00, contact-breakers, distributors H01R39/00, generators H02K
• 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

An inductive charging coil assembly for a vehicle is provided. The assembly comprises a first base plate including at least one first coil thereon for receiving magnetic flux to charge a vehicle battery. The assembly further comprises a second base plate including at least one second coil having a top surface thereof that forms an elevated portion to focus the magnetic flux to the at least one first coil.

Claims

1. An inductive charging coil assembly for a vehicle comprising:

a first base plate including at least one first coil thereon for receiving magnetic flux to charge a vehicle battery;

a second base plate including at least one second coil having a top surface thereof that forms an elevated portion to focus the magnetic flux to the at least one first coil; and

a first plurality of ferrites, each ferrite being co-planar and extending in a different radial direction from a first center point about the at least one second coil for guiding the magnetic flux from the elevated portion to the at least one first coil.

2. The assembly of claim 1 wherein the second coil is a primary coil.

3. The assembly of claim 1 wherein the second coil includes an inner diameter and an outer diameter.

4. The assembly of claim 3 wherein the inner diameter is elevated in relation to the outer diameter thereby forming the elevated portion.

5. The assembly of claim 3 wherein the outer diameter is elevated in relation to the inner diameter thereby forming the elevated portion.

6. The assembly of claim 1 wherein the elevated portion is a curved portion.

7. The assembly of claim 1 wherein the first base plate and the second base plate are each formed of one of aluminum, a first magnetic material, a first conductive plastic, and a second conductive plastic including a second magnetic material.

8. The assembly of claim 1 wherein the first base plate and the second base plate are each formed of one of aluminum, a first magnetic material, a first conductive plastic, and a second conductive plastic including a second magnetic material.

9. The assembly of claim 1 further comprising a second plurality of ferrites, each ferrite being co-planar and extending in a different radial direction from a second center point about the at least one first coil to receive the magnetic flux, wherein the second center point extends vertically through the at least one first coil.

10. An inductive charging coil assembly for a vehicle comprising:

a first base plate including a secondary coil thereon for receiving magnetic flux to charge a vehicle battery;

a second base plate including at least one primary coil having a top surface thereof that forms an elevated portion to focus the magnetic flux to the secondary coil; and

a first plurality of ferrites, each ferrite being co-planar and extending in a different radial direction from a first center point about the at least one primary coil for guiding the magnetic flux from the elevated portion to the secondary coil.

11. The assembly of claim 10 wherein at least one primary coil includes an inner diameter and an outer diameter.

12. The assembly of claim 11 wherein the inner diameter is elevated in relation to the outer diameter thereby forming the elevated portion.

13. The assembly of claim 11 wherein the outer diameter is elevated in relation to the inner diameter thereby forming the elevated portion.

14. The assembly of claim 10 wherein the elevated portion is a curved portion.

15. The assembly of claim 10 further comprising a second plurality of ferrites, each ferrite being co-planar and extending in a different radial direction from a second center point about the secondary coil to receive the magnetic flux, wherein the second center point extends vertically through the secondary coil.

16. An inductive charging coil assembly for a vehicle comprising:

a first base plate including a secondary coil thereon for receiving magnetic flux to charge a vehicle battery;

a first plurality of ferrites, each ferrite being co-planar and extending in a different radial direction from a first center point about the secondary coil to receive the magnetic flux; and

a second base plate including at least one primary coil including an elevated portion to focus the magnetic flux to the secondary coil.

17. The assembly of claim 16 wherein the at least one primary coil includes an inner diameter and an outer diameter.

18. The assembly of claim 17 wherein the inner diameter is elevated in relation to the outer diameter thereby forming the elevated portion.

19. The assembly of claim 17 wherein the outer diameter is elevated in relation to the inner diameter thereby forming the elevated portion.

20. The assembly of claim 16 further comprising a second plurality of ferrites, each ferrite being co-planar and extending in a different radial direction from a second center point about the at least one primary coil for guiding the magnetic flux from the elevated portion to the secondary coil, wherein the second center point extends vertically through the at least one primary coil.