Charging protection circuit
US9130382B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2012 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | May 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a charging protection circuit. The charging protection circuit includes a wireless charging base and a charging receiving circuit. The charging receiving circuit includes first receiving coils configured to receive electromagnetic waves from the wireless charging base; a high-permeability magnetic core coupled to the first receiving coils and configured to block electromagnetic waves opposite to the electromagnetic waves from the wireless charging base; a detection circuit coupled to the high-permeability magnetic core and configured to detect whether the high-permeability magnetic core has failed; and a power supply circuit coupled to the high-permeability magnetic core and configured to convert electromagnetic energy generated by electromagnetic waves into electric energy to supply power to a power receiving device. With the technical solution, the serious result caused by continuous charging of a wireless charger after a high-permeability magnetic core has failed is avoided, thus guaranteeing the security of a power receiving device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.