Electric power reception apparatus and electrical powered vehicle

• US 8,380,380 B2
• Filed: 05/17/2011
• Issued: 02/19/2013
• Est. Priority Date: 11/21/2008
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Sasaki, Masaru
• Primary Examiner(s): Tran, Dalena
• Application Number:
  US13/109,691
• Publication Number:
  US 20110276208A1
• Time in Patent Office: 644 Days
• Field of Search: 701/22, 320/104, 320106-109, 320/139, 320/135, 320/164, 180/65.1, 180/68.1, 307/10.1, 307/104, 191/22.R, 191/10, 191/4, 336/83
• US Class Current: 701/22
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 6/365 with the gears having orbital motion
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• 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: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/24 including control of energy storage means
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/13 in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• 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 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A secondary self-resonant coil is installed at substantially the central region of the bottom face of the vehicle body, receiving electric power from a power feeding apparatus in a non-contact manner by resonating with a primary self-resonant coil of a power feeding apparatus provided external to the vehicle, via an electromagnetic field. In a power reception mode from the power feeding apparatus, high voltage is generated at the wire end of the secondary self-resonant coil, causing generation of a high electric field around the wire end. In order to keep the wire end distant from an ECU that is an electric apparatus located closest to the secondary self-resonant coil, the secondary self-resonant coil is arranged such that the wire end is located at a side opposite to the side where the ECU is deviated relative to the bilateral symmetric axis of the vehicle body.

Claims

1. An electric power reception apparatus comprising:

a secondary self-resonant coil receiving electric power from a primary self-resonant coil directed to power transmission in a non-contact manner by resonating, via an electromagnetic field, with said primary self-resonant coil, and

at least one electric apparatus among a power storage device capable of storing electric power received by said secondary self-resonant coil, an electric motor generating a driving force, a driving device driving said electric motor using the electric power received by said secondary self-resonant coil, and an electronic control unit controlling said driving device,

said secondary self-resonant coil being arranged such that both terminal wire ends of said secondary self-resonant coil are located distant from an electric apparatus closest to said secondary self-resonant coil among said electric apparatus.

2. The electric power reception apparatus according to claim 1, wherein the electric apparatus closest to said secondary self-resonant coil among said electric apparatus is said electronic control unit.

3. The electric power reception apparatus according to claim 1, further comprising a capacitor connected between both ends of said secondary self-resonant coil.

4. An electrical powered vehicle comprising:

a secondary self-resonant coil receiving electric power from a primary self-resonant coil directed to power transmission in a non-contact manner by resonating, via an electromagnetic field, with said primary self-resonant coil, and

at least one electric apparatus among a power storage device capable of storing electric power received by said secondary self-resonant coil, an electric motor generating a driving force of the vehicle, a driving device driving said electric motor using the electric power received by said secondary self-resonant coil, and an electronic control unit controlling said driving device,

when the electric apparatus closest to said secondary self-resonant coil among said electric apparatus is located at one side of a bilateral symmetric axis in a longitudinal direction of said vehicle, said secondary self-resonant coil being arranged such that both terminal wire ends of said secondary self-resonant coil are located at the other side of said bilateral symmetric axis.

5. The electrical powered vehicle according to claim 4, wherein

said electric motor and said driving device are arranged at a front region of a vehicle body,

said power storage device is arranged at a rear region of the vehicle body,

said electronic control unit is arranged between said electric motor as well as said driving device and said power storage device in a longitudinal direction of the vehicle body, and,

said secondary self-resonant coil is arranged at substantially a central region at a bottom face of the vehicle body.

6. The electrical powered vehicle according to claim 4, wherein

said electric motor and said driving device are arranged at a front region of a vehicle body,

said power storage device is arranged at a rear region of the vehicle body,

said electronic control unit is arranged between said electric motor as well as said driving device and said power storage device in a longitudinal direction of the vehicle body, and,

said secondary self-resonant coil is arranged at substantially a central region at an upper portion of the vehicle body.

7. The electrical powered vehicle according to claim 4, wherein the electric apparatus closest to said secondary self-resonant coil among said electric apparatus is said electronic control unit.

8. The electrical powered vehicle according to claim 4, further comprising a capacitor connected between both ends of said secondary self-resonant coil.