ELECTROMAGNETIC INDUCTION COIL

• US 20150348692A1
• Filed: 08/13/2015
• Published: 12/03/2015
• Est. Priority Date: 02/19/2013
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Ngahu, Antony
• Granted Patent: US 9,978,494 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01F 27/006 with special arrangement or spacing of turns of the winding(s), e.g. to produce desired self-resonance
• 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: H02J 50/12 of the resonant type

Abstract

A primary electromagnetic induction coil, which supplies power to a primary resonance coil in a pair of a primary and a secondary resonance coils that conduct non-contact power supply by magnetic field resonance, includes a coil main body and a wedge that mounts an end portion of the coil main body to separate the end portion from other portions. Impedance matching can be achieved by adjusting a position of the wedge and a number of turns of the coil main body.

Claims

1. A coil serving as at least one coil among one pair of resonance coils that conduct non-contact power supply by magnetic field resonance, an electromagnetic induction coil that supplies power to a power supply side of the pair of resonance coils, or an electromagnetic induction coil supplied with power from a power receipt side of the pair of resonance coils, the coil comprising:

a coil main body; and

an adjustment mechanism configured to adjust a number of turns of the coil main body,

wherein the adjustment mechanism consists of a mounting portion to mount an end portion of the coil main body and separate the end portion from other portions.

3. The coil according to claim 1, wherein the mounting portion has an inclined plane that becomes higher as a position approaches the end portion of the coil main body, and the end portion of the coil main body is mounted on the inclined plane.

2. A coil serving as at least one coil among one pair of resonance coils that conduct non-contact power supply by magnetic field resonance, an electromagnetic induction coil that supplies power to a power supply side of the pair of resonance coils, or an electromagnetic induction coil supplied with power from a power receipt side of the pair of resonance coils, the coil comprising:

a coil main body; and

an adjustment mechanism configured to adjust a number of turns of the coil main body,

wherein the adjustment mechanism consists of a turn back portion provided by winding back a portion of the coil main body.

4. The coil according to claim 2, wherein the turn back portion is provided on the end portion of the coil main body.