Compact power transfer mechanism using induced EMF

• US 10,840,740 B2
• Filed: 04/07/2016
• Issued: 11/17/2020
• Est. Priority Date: 04/14/2015
• Status: Active Grant

• Current Assignee: Hanchett Entry Systems Incorporated (Assa Abloy AB)
• Original Assignee: Hanchett Entry Systems Incorporated (Assa Abloy AB)
• Inventors: Lewis, Robert W., Hanchett, Jr., Leland J.
• Primary Examiner(s): Barnie, Rexford N
• Assistant Examiner(s): Chowdhuri, Swarna N
• Application Number:
  US15/093,377
• Publication Number:
  US 20160308396A1
• Time in Patent Office: 1,685 Days
• Field of Search: 307104
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: E05B 2047/0061 using induction
• CPC Class Codes: E05B 2047/0082 Induction for charging or current transformation
• CPC Class Codes: H02J 50/12 of the resonant type
• 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 90/14 Plug-in electric vehicles

Abstract

What is presented is a power-transfer system that provides resonant inductive power from a first object to a second object, which is adjacent to the first object. The system includes a first transformer portion that is positioned on the first object and having a first core portion. The first core portion includes a transmit unit configured to transfer an electromagnetic field to the second transformer portion. The first core portion also includes first circuitry that allows the transmit unit to transfer the electromagnetic field. The second transformer portion is positioned on the second object and has a second core portion. The second core portion includes a receiver unit configured to receive the electromagnetic field. The second core portion also includes second circuitry that allows the transmit unit to transfer the electromagnetic field.

Claims

1. A power-transfer system for providing resonant inductive power from a first object to a second object, wherein said first object includes a first mounting plate having a first plate surface and said second object includes a second mounting plate having a second plate surface, wherein said first plate surface and said second plate surface are adjacent with respect to each other with a plate gap therebetween when said resonant inductive power is being transferred from said first object to said second object, and wherein said first object is one of a door or a door frame and said second object is the other of said door or said door frame, said system comprising:

a) a first transformer portion received by a first aperture in said first plate surface, wherein said first transformer portion comprises;

i.) a first cap member including a first top cover portion having a first end face, wherein said first end face sits flush with said first plate surface to form a continuous plane with said first plate surface;

ii.) a first housing member connected to said first cap member, wherein said first housing member extends away from said first end face; and

iii.) a first core portion received by said first housing member;

b) a second transformer portion received by a second aperture in said second plate surface, wherein said second transformer portion comprises;

i.) a second cap member including a second top cover portion having a second end face, wherein said second end face sits flush with said second plate surface to form a continuous plane with said second plate surface;

ii.) a second housing member connected to said second cap member, wherein said second housing member extends away from said second end face;

iii.) a second core portion received by said second housing member,

and wherein when said resonant inductive power is being transferred from said first object to said second object, said first end face of said first cap member is adjacent to and facing said second end face of said second cap member, and an intervening gap exists between said first end face and said second end face.

2. The system in accordance with claim 1 wherein an open circuit is created when said first transformer portion moves away from said second transformer portion.

3. The system in accordance with claim 1 wherein one of said first or second transformer portion is cylindrically shaped.

4. The system in accordance with claim 3 wherein said first or second transformer portion is no more than one inch in diameter.

5. The system in accordance with claim 1 wherein the first object is a door frame and the second object is a door movably connected to the door frame.

6. The system in accordance with claim 1 wherein said door includes a mortise lock set having a lock set body, wherein one of said first or second transformer portion is contained within said mortise lock set body.

7. The system in accordance with claim 6 wherein said cap member of said one of said first or second transformer portion contained in said mortise lock set body is cylindrically shaped.

8. The system in accordance with claim 7 wherein said first or second aperture for receiving said one of said first or second transformer portion is no more than one inch in diameter.