Contactless power supply transfer transformer

• US 9,502,176 B2
• Filed: 05/21/2013
• Issued: 11/22/2016
• Est. Priority Date: 05/21/2012
• Status: Expired due to Fees

• Current Assignee: Technova, Inc. (Aisin Corp.)
• Original Assignee: Technova, Inc. (Aisin Corp.)
• Inventors: Yasuda, Tomio, Kishi, Hiroyuki, Norigoe, Isami
• Primary Examiner(s): Nguyen, Danny
• Application Number:
  US14/401,365
• Publication Number:
  US 20150155094A1
• Time in Patent Office: 1,281 Days
• Field of Search: 307/10.1, 307/104
• US Class Current: 1/1
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• 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: B60M 7/003 for vehicles using stored power (e.g. charging stations)
• CPC Class Codes: H01F 27/24 Magnetic cores
• CPC Class Codes: H01F 27/263 Fastening parts of the core together
• CPC Class Codes: H01F 27/2823 Wires H01F27/2866 takes precedence
• CPC Class Codes: H01F 27/2876 Cooling cooling transformers and inductances in general H01F27/08
• CPC Class Codes: H01F 27/2885 with shields or electrodes shields or electrodes for pancake coils H01F27/2871; construction of electric or magnetic shields or screens H01F27/36
• CPC Class Codes: H01F 27/29 Terminals; Tapping arrangements for signal inductances
• 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 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles

Abstract

A contactless power transfer transformer includes main body. The main body includes magnetic pole core members, winding wire core member, and wire. The winding wire core member is orthogonal to the magnetic pole core members and connects one portion of each of the pair of parallel magnetic pole core members with each other. The main body is fixed to fixing plate having a magnetic shield function and heat dissipation function. The connecting position of the winding wire core member with respect to the magnetic pole core members is located toward one side from a center in the longitudinal direction of the magnetic pole core members. At least a space between the pair of the magnetic coil core members each containing an end portion longer in distance to the connecting position is used as an arrangement space of component electrically connected to the electric wire.

Claims

1. A contactless power transfer transformer comprising:

a coil main body including;

magnetic pole core members that constitutes a pair of parallel magnetic pole portions;

a winding wire core member that is orthogonal to the magnetic pole core members and connects one portion of each of the pair of parallel magnetic pole core members with each other; and

an electric wire that is wound around the winding wire core member, wherein

the coil main body is fixed to a fixing plate having a magnetic shield function and a heat dissipation function,

a connecting position of the winding wire core member with respect to the magnetic pole core members is located toward one side from a center in the longitudinal direction of the magnetic pole core members, and

at least a space between the pair of the magnetic coil core members each containing an end portion longer in a distance to the connecting position is used as an arrangement space of a component electrically connected to the electric wire.

2. The contactless power transfer transformer of claim 1, wherein the arrangement space is set to an area separated from the electric wire wound around the winding wire core member and the magnetic pole core members.

3. The contactless power transfer transformer of claim 2, wherein

the electric wire wound around the winding wire core member constitutes a primary coil, and

the component is a capacitor connected to the primary coil in series.

4. The contactless power transfer transformer of claim 2, wherein

the electric wire wound around the winding wire core member constitutes a secondary coil, and

the component is a capacitor connected to the secondary coil in parallel.

5. The contactless power transfer transformer of claim 2, wherein

the electric wire wound around the winding wire core member constitutes a secondary coil, and

the component is a capacitor connected to the secondary coil in parallel and a rectifier connected to the capacitor in parallel.

6. The contactless power transfer transformer of claim 5, wherein the rectifier is attached directly to the fixing plate.