Non-contact charging apparatus having differently sized exposed regions on opposing faces of magnetic body

• US 9,862,283 B2
• Filed: 09/25/2015
• Issued: 01/09/2018
• Est. Priority Date: 03/27/2013
• Status: Active Grant

• Current Assignee: Panasonic Automotive Systems Company of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Sadakata, Hideki, Fujita, Atsushi, Omori, Yoshiharu, Bessyo, Daisuke
• Primary Examiner(s): Fantu, Yalkew
• Application Number:
  US14/866,804
• Publication Number:
  US 20160016477A1
• Time in Patent Office: 837 Days
• Field of Search: 320108
• CPC Class Codes: B60L 53/124 Detection or removal of foreign bodies
• CPC Class Codes: H01F 27/306 Fastening or mounting coils or windings on core, casing or other support
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/363 made of electrically conductive material
• 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 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• 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

The present disclosure provides a non-contact charging apparatus including a power transmitting coil and a power receiving coil which face each other. At least one of the power transmitting coil or the power receiving coil includes a magnetic body and a coil wound around the magnetic body. The magnetic body has, on both end portions, exposed regions in which the wound coil is absent. One of the exposed regions that is on a face facing the power transmitting coil or the power receiving coil is larger than another one of the exposed regions that is on a face not facing the power transmitting coil or the power receiving coil.

Claims

1. A non-contact charging apparatus comprising a power transmitting coil and a power receiving coil which face each other, wherein

at least one of the power transmitting coil or the power receiving coil includes:

a magnetic body, and

a coil wound around the magnetic body,

the magnetic body has, on both end portions, exposed regions in which the wound coil is absent,

out of the exposed regions, one which is on a face of the magnetic body facing the power transmitting coil or the power receiving coil is larger than another one which is on a face of the magnetic body not facing the power transmitting coil or the power receiving coil,

over an outer periphery of the magnetic body, a plurality of ribs are arranged at intervals in a winding direction of the coil,

an interval between adjacent ones of the ribs arranged on a face facing the power transmitting coil or the power receiving coil is narrower than an interval between adjacent ones of the ribs arranged on a face not facing the power transmitting coil or the power receiving coil, and

the coil is wound between the ribs.

2. The non-contact charging apparatus of claim 1, wherein

the coil is implemented as a single continuous coil.

3. The non-contact charging apparatus of claim 1, wherein

the number of tiers formed by portions of the wound coil which extend above a face not facing the power transmitting coil or the power receiving coil is less than the number of tiers formed by portions of the wound coil which extend above a face facing the power transmitting coil or the power receiving coil.

4. The non-contact charging apparatus of claim 1, wherein

the magnetic body has no exposed regions on both end portions of the face not facing the power transmitting coil or the power receiving coil.