Method for configuring an electronic device having an inductive receiver coil with ultra-thin shielding layer
US9795069B2 · kind B2 · utility
11Cited by
19References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2015 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Sep 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/0042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronic device which is inductively powered or charged has a receiver coil on which a metal object can be placed without causing deterioration of the coil's magnetic field and without generating heat in the metal object. An ultra-thin, flexible, high magnetic permeability metal foil having a thickness of 50 μm or less is provided as a shielding layer between the coil and the object. Radial slits are provided in the shielding layer, which suppress unwanted eddy currents in the layer to reduce power transfer losses and heat generation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.