Shielding film, coil assembly, and wireless charging device
US12142949B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2021 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Aug 18, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A shielding film includes a first film layer. The first film layer includes a first conductive part and a first insulating part, and the first insulating part penetrates the first conductive part in a thickness direction of the first film layer. Under electromagnetic influence of a first electromagnetic field, a first eddy current is formed in the first film layer, and a loop of the first eddy current is located in the first conductive part, so that the first eddy current has relatively high current intensity. Under electromagnetic influence of a second electromagnetic field, a second eddy current is formed in the first film layer, and a loop of the second eddy current passes through the first insulating part, so that current intensity of the second eddy current can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.