COIL UNIT AND CONTACTLESS POWER SUPPLYING APPARATUS

• US 20160005532A1
• Filed: 09/14/2015
• Published: 01/07/2016
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Terayama, Hajime, Kagami, Kazuyoshi, Tanaka, Shingo
• Granted Patent: US 9,620,279 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01F 27/00 Details of transformers or inductances, in general
• CPC Class Codes: H01F 27/02 Casings
• CPC Class Codes: H01F 27/06 Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
• CPC Class Codes: H01F 27/08 Cooling heat-transfer elements F28F; Ventilating structural details of casings H01F27/02
• CPC Class Codes: H01F 27/24 Magnetic cores
• CPC Class Codes: H01F 27/346 Preventing or reducing leakage fields using magnetic shields H01F27/36; using auxiliary windings H01F27/38
• 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 5/00 Coils superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00
• 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

In a power supplying side core around which a power supplying side resonant coil is wound that contactlessly supplies power to a power receiving side resonant coil, a pair of protrusion portions is provided that protrudes from central axis direction both sides of the power supplying side resonant coil toward the power receiving side resonant coil. Further, in a power receiving side core around which the power receiving side resonant coil is wound that contactlessly receives power from the power supplying side resonant coil, a pair of protrusion portions is provided that protrudes from central axis direction both sides of the power receiving side resonant coil toward the power supplying side resonant coil.

Claims

1. A coil unit comprising a coil that performs contactless power supplying with another coil, and a core around which the coil is wound, a central axis of the coil being disposed to be vertical to a separation direction of the other coil and the coil at a time of the power supplying,

wherein the core is provided with a pair of protrusion portions that protrudes from central axis direction both sides of the coil toward the other coil,

wherein the core is provided to be divided into a center portion around which the coil is wound and both end portions respectively provided with the pair of protrusion portions,

wherein the core is divided such that the both end portions are overlapped with respective end surfaces of the central axis direction both sides of the coil of the center portion, and

wherein protrusion amounts of the pair of protrusion portions are adjusted depending on an inclination of the other coil.

2. A contactless power supplying apparatus comprising a pair of coil units that performs contactless power supplying, wherein at least one of the pair of coil units includes the coil unit described in claim 1.