Title:
COIL UNIT, WIRELESS POWER TRANSMISSION DEVICE, WIRELESS POWER RECEPTION DEVICE, AND WIRELESS POWER TRANSMISSION SYSTEM
Document Type and Number:
Japanese Patent JP2019169530
Kind Code:
A
Abstract:
To provide a coil unit capable of reducing the influence of power transmission on signal transmission when power and a signal are transmitted using magnetic flux.SOLUTION: A coil unit 14a includes a first magnetic body B1 having a first surface M1, a first coil 141 that is disposed on the first surface M1 and in which a first conductor is spirally disposed on the first surface, and a second coil 142 in which a second conductor is wound around the first magnetic body as a solenoid coil covering each of a part of the first surface M1. The first magnetic body B1 has different magnetic characteristics on one side and magnetic characteristics on the other side with respect to the center line of the first magnetic body B1 in the direction parallel to the winding axis of the second coil 142.SELECTED DRAWING: Figure 2
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Inventors:
HANABUSA KAZUYOSHI
URANO TAKASHI
URANO TAKASHI
Application Number:
JP2018054568A
Publication Date:
October 03, 2019
Filing Date:
March 22, 2018
Export Citation:
Assignee:
TDK CORP
International Classes:
H01F38/14; H01F17/00; H01F17/04; H01Q7/06; H01Q21/28; H02J50/10; H02J50/80
Attorney, Agent or Firm:
Sumio Tanai
Norihiko Ara
Masato Iida
Akihiro Ogino
Norihiko Ara
Masato Iida
Akihiro Ogino
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