Electric power receiving device and electric power transmission device

Patent metadata

Field	Value
Publication number	US-2016294222-A1
Application number	US-201615085481-A
Country	US
Kind code	A1
Filing date	Mar 30, 2016
Priority date	Apr 3, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

An electric power receiving device has an electric power receiving unit that contactlessly receives electric power from an electric power transmission device, and the power receiving unit includes a first node, a second node, and a capacitor, a coil, a capacitor, a coil, and a capacitor, which are sequentially connected in series, between the first node and the second node.

First claim

What is claimed is:

1 . An electric power receiving device, comprising:
an electric power receiving unit configured to contactlessly receive electric power from an electric power transmission device, the power receiving unit including a first node, a second node, a first capacitor, a first coil, a second capacitor, a second coil, and a third capacitor, the first capacitor, the first coil, the second capacitor, the second coil, and the third capacitor being sequentially connected in series, between the first node and the second node.

2 . The electric power receiving device according to claim 1 , wherein a capacitance of the second capacitor is smaller than a capacitance of the first capacitor and a capacitance of the third capacitor.

3 . The electric power receiving device according to claim 2 , wherein an inductance of the first coil is equal to or substantially equal to an inductance of the second coil.

4 . An electric power transmission device, comprising:
an electric power transmission unit configured to contactlessly transmit electric power to an electric power receiving device, the power transmission unit including a third node, a fourth node, a fourth capacitor, a third coil, a fifth capacitor, a fourth coil, and a sixth capacitor, the fourth capacitor, the third coil, the fifth capacitor, the fourth coil, and the sixth capacitor being sequentially connected in series, between the third node and the fourth node.

5 . The electric power transmission device according to claim 4 , wherein a capacitance of the fourth capacitor is substantially equal to a capacitance of the sixth capacitor, and a capacitance of the fifth capacitor is smaller than the capacitance of the fourth capacitor.

6 . The electric power transmission device according to claim 5 , wherein an inductance of the third coil is equal to or substantially equal to an inductance of the fourth coil.

Assignees

• Toyota Motor Co Ltd
• Nippon Soken

Inventors

• Yuasa Hiroaki
• Nishizaki Ryohei
• Kimura Norihito

Classifications

• H02J50/70

  involving the reduction of electric, magnetic or electromagnetic leakage fields · CPC title

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• H02J7/70

  characterised by the mechanical construction · CPC title

• H01F27/02

  Casings · CPC title

• H02J50/12 Primary

  of the resonant type · CPC title