Title:
WIRELESS POWER RECEPTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/204225
Kind Code:
A1
Abstract:
This wireless power reception device (10) comprises a power reception coil (21), an electronic circuit (40), a load circuit (43), a magnetic sheet (50), and a case (100). The magnetic sheet (50) is arranged for the power reception coil (21). The case (100) is composed of a complex solid structure in which the power reception coil (21), the electronic circuit (40), the load circuit (43), and the magnetic sheet (50) are arranged. The power reception coil (21) has the shape having a plurality of curvatures that are three-dimensionally curved along the outer surface or inner surface of the case (100) of the solid structure. The magnetic sheet (50) is three-dimensionally disposed at a position surrounding the electronic circuit (40) and the load circuit (43) in the inner space of the power reception coil (21) so as to form a magnetic path of a main magnetic flux that is interlinked with the power reception coil (21) with respect to the magnetic field from the outside of the case (100) of the solid structure.
Inventors:
HOSOTANI TATSUYA (JP)
YAMADA KIYOKAZU (JP)
YAMADA KIYOKAZU (JP)
Application Number:
PCT/JP2023/015535
Publication Date:
October 26, 2023
Filing Date:
April 19, 2023
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H02J50/70; H02J7/00; H02J50/12; H02J50/40; H04R25/00
Foreign References:
| JP2015159664A | 2015-09-03 | |||
| JP2020123522A | 2020-08-13 | |||
| JP2018174123A | 2018-11-08 | |||
| US20140241557A1 | 2014-08-28 | |||
| JP2017063521A | 2017-03-30 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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