Invention Grant
- Patent Title: Magnetic sheet, coil module having magnetic sheet, and non-contact power supply device
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Application No.: US16953689Application Date: 2020-11-20
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Publication No.: US11749432B2Publication Date: 2023-09-05
- Inventor: Yoshihiro Kubo , Yoshito Oka
- Applicant: TDK CORPORATION
- Applicant Address: JP Tokyo
- Assignee: TDK CORPORATION
- Current Assignee: TDK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP 19223820 2019.12.11
- Main IPC: H01F1/34
- IPC: H01F1/34 ; H01F27/36 ; H02J50/70 ; H01F1/16 ; H02J50/10 ; H01F38/14 ; H01F41/02
Abstract:
A magnetic sheet according to the present invention contains Mn—Zn ferrite as a main component and is comprising of a sheet-shaped sintered body. In this magnetic sheet, a difference |σs−σc| between a residual stress σs in a surface layer portion and a residual stress σc in a central portion at a cross section is 20 MPa or less in absolute value.
Public/Granted literature
- US20210183550A1 MAGNETIC SHEET, COIL MODULE HAVING MAGNETIC SHEET, AND NON-CONTACT POWER SUPPLY DEVICE Public/Granted day:2021-06-17
Information query
